Action not permitted
Modal body text goes here.
Modal Title
Modal Body
alsa-2026:2282
Vulnerability from osv_almalinux
Published
2026-02-09 00:00
Modified
2026-02-12 10:28
Summary
Moderate: kernel security update
Details
The kernel packages contain the Linux kernel, the core of any Linux operating system.
Security Fix(es):
- kernel: Linux kernel: Memory corruption in Squashfs due to incorrect block size calculation (CVE-2025-38415)
- kernel: vsock/vmci: Clear the vmci transport packet properly when initializing it (CVE-2025-38403)
- kernel: Linux kernel: Data corruption and system instability due to improper io_uring/net buffer handling (CVE-2025-38730)
- kernel: smb: client: let recv_done verify data_offset, data_length and remaining_data_length (CVE-2025-39933)
- kernel: mptcp: Use __sk_dst_get() and dst_dev_rcu() in mptcp_active_enable() (CVE-2025-40133)
- kernel: Linux kernel: Out-of-bounds write in fbdev can lead to privilege escalation, information disclosure, or denial of service. (CVE-2025-40304)
- kernel: Linux kernel: Information disclosure and denial of service via out-of-bounds read in font glyph handling (CVE-2025-40322)
- kernel: svcrdma: use rc_pageoff for memcpy byte offset (CVE-2025-68811)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
References
{
"affected": [
{
"package": {
"ecosystem": "AlmaLinux:10",
"name": "kernel-abi-stablelists"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "6.12.0-124.35.1.el10_1"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "AlmaLinux:10",
"name": "kernel-doc"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "6.12.0-124.35.1.el10_1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"details": "The kernel packages contain the Linux kernel, the core of any Linux operating system. \n\nSecurity Fix(es): \n\n * kernel: Linux kernel: Memory corruption in Squashfs due to incorrect block size calculation (CVE-2025-38415)\n * kernel: vsock/vmci: Clear the vmci transport packet properly when initializing it (CVE-2025-38403)\n * kernel: Linux kernel: Data corruption and system instability due to improper io_uring/net buffer handling (CVE-2025-38730)\n * kernel: smb: client: let recv_done verify data_offset, data_length and remaining_data_length (CVE-2025-39933)\n * kernel: mptcp: Use __sk_dst_get() and dst_dev_rcu() in mptcp_active_enable() (CVE-2025-40133)\n * kernel: Linux kernel: Out-of-bounds write in fbdev can lead to privilege escalation, information disclosure, or denial of service. (CVE-2025-40304)\n * kernel: Linux kernel: Information disclosure and denial of service via out-of-bounds read in font glyph handling (CVE-2025-40322)\n * kernel: svcrdma: use rc_pageoff for memcpy byte offset (CVE-2025-68811)\n\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n",
"id": "ALSA-2026:2282",
"modified": "2026-02-12T10:28:13Z",
"published": "2026-02-09T00:00:00Z",
"references": [
{
"type": "ADVISORY",
"url": "https://access.redhat.com/errata/RHSA-2026:2282"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2025-38403"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2025-38415"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2025-38730"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2025-39933"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2025-40133"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2025-40304"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2025-40322"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2025-68811"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/2383404"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/2383421"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/2393191"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/2401432"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/2414465"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/2419870"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/2419902"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/2429116"
},
{
"type": "ADVISORY",
"url": "https://errata.almalinux.org/10/ALSA-2026-2282.html"
}
],
"related": [
"CVE-2025-38415",
"CVE-2025-38403",
"CVE-2025-38730",
"CVE-2025-39933",
"CVE-2025-40133",
"CVE-2025-40304",
"CVE-2025-40322",
"CVE-2025-68811"
],
"summary": "Moderate: kernel security update"
}
CVE-2025-38403 (GCVE-0-2025-38403)
Vulnerability from cvelistv5 – Published: 2025-07-25 13:08 – Updated: 2026-06-11 18:44
VLAI
EPSS
VEX
Title
vsock/vmci: Clear the vmci transport packet properly when initializing it
Summary
In the Linux kernel, the following vulnerability has been resolved:
vsock/vmci: Clear the vmci transport packet properly when initializing it
In vmci_transport_packet_init memset the vmci_transport_packet before
populating the fields to avoid any uninitialised data being left in the
structure.
Severity
No CVSS data available.
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
Assigner
References
10 references
| URL | Tags |
|---|---|
| https://git.kernel.org/stable/c/19c2cc01ff9a80313… | |
| https://git.kernel.org/stable/c/1c1bcb0e78230f533… | |
| https://git.kernel.org/stable/c/2d44723a091bc8532… | |
| https://git.kernel.org/stable/c/0a01021317375b8d1… | |
| https://git.kernel.org/stable/c/94d0c326cb3ee6b0f… | |
| https://git.kernel.org/stable/c/75705b44e0b9aaa74… | |
| https://git.kernel.org/stable/c/e9a673153d578fd43… | |
| https://git.kernel.org/stable/c/223e2288f4b8c262a… | |
| https://lists.debian.org/debian-lts-announce/2025… | |
| https://lists.debian.org/debian-lts-announce/2025… |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
d021c344051af91f42c5ba9fdedc176740cbd238 , < 19c2cc01ff9a8031398a802676ffb0f4692dd95d
(git)
Affected: d021c344051af91f42c5ba9fdedc176740cbd238 , < 1c1bcb0e78230f533b4103e8cf271d17c3f469f0 (git) Affected: d021c344051af91f42c5ba9fdedc176740cbd238 , < 2d44723a091bc853272e1a51a488a3d22b80be5e (git) Affected: d021c344051af91f42c5ba9fdedc176740cbd238 , < 0a01021317375b8d1895152f544421ce49299eb1 (git) Affected: d021c344051af91f42c5ba9fdedc176740cbd238 , < 94d0c326cb3ee6b0f8bd00e209550b93fcc5c839 (git) Affected: d021c344051af91f42c5ba9fdedc176740cbd238 , < 75705b44e0b9aaa74f4c163d93d388bcba9e386a (git) Affected: d021c344051af91f42c5ba9fdedc176740cbd238 , < e9a673153d578fd439919a24e99851b2f87ecbce (git) Affected: d021c344051af91f42c5ba9fdedc176740cbd238 , < 223e2288f4b8c262a864e2c03964ffac91744cd5 (git) |
|
| Linux | Linux |
Affected:
3.9
Unaffected: 0 , < 3.9 (semver) Unaffected: 5.4.296 , ≤ 5.4.* (semver) Unaffected: 5.10.240 , ≤ 5.10.* (semver) Unaffected: 5.15.187 , ≤ 5.15.* (semver) Unaffected: 6.1.144 , ≤ 6.1.* (semver) Unaffected: 6.6.97 , ≤ 6.6.* (semver) Unaffected: 6.12.37 , ≤ 6.12.* (semver) Unaffected: 6.15.6 , ≤ 6.15.* (semver) Unaffected: 6.16 , ≤ * (original_commit_for_fix) |
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2025-11-03T17:37:37.415Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"
},
{
"url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2025-38403",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-10T20:40:54.302343Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-06-11T18:44:06.825Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"net/vmw_vsock/vmci_transport.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "19c2cc01ff9a8031398a802676ffb0f4692dd95d",
"status": "affected",
"version": "d021c344051af91f42c5ba9fdedc176740cbd238",
"versionType": "git"
},
{
"lessThan": "1c1bcb0e78230f533b4103e8cf271d17c3f469f0",
"status": "affected",
"version": "d021c344051af91f42c5ba9fdedc176740cbd238",
"versionType": "git"
},
{
"lessThan": "2d44723a091bc853272e1a51a488a3d22b80be5e",
"status": "affected",
"version": "d021c344051af91f42c5ba9fdedc176740cbd238",
"versionType": "git"
},
{
"lessThan": "0a01021317375b8d1895152f544421ce49299eb1",
"status": "affected",
"version": "d021c344051af91f42c5ba9fdedc176740cbd238",
"versionType": "git"
},
{
"lessThan": "94d0c326cb3ee6b0f8bd00e209550b93fcc5c839",
"status": "affected",
"version": "d021c344051af91f42c5ba9fdedc176740cbd238",
"versionType": "git"
},
{
"lessThan": "75705b44e0b9aaa74f4c163d93d388bcba9e386a",
"status": "affected",
"version": "d021c344051af91f42c5ba9fdedc176740cbd238",
"versionType": "git"
},
{
"lessThan": "e9a673153d578fd439919a24e99851b2f87ecbce",
"status": "affected",
"version": "d021c344051af91f42c5ba9fdedc176740cbd238",
"versionType": "git"
},
{
"lessThan": "223e2288f4b8c262a864e2c03964ffac91744cd5",
"status": "affected",
"version": "d021c344051af91f42c5ba9fdedc176740cbd238",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"net/vmw_vsock/vmci_transport.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "3.9"
},
{
"lessThan": "3.9",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"version": "5.4.296",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.240",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.187",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.144",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.97",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.37",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.15.*",
"status": "unaffected",
"version": "6.15.6",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.16",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.4.296",
"versionStartIncluding": "3.9",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.10.240",
"versionStartIncluding": "3.9",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.15.187",
"versionStartIncluding": "3.9",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.144",
"versionStartIncluding": "3.9",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.97",
"versionStartIncluding": "3.9",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.37",
"versionStartIncluding": "3.9",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.15.6",
"versionStartIncluding": "3.9",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.16",
"versionStartIncluding": "3.9",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvsock/vmci: Clear the vmci transport packet properly when initializing it\n\nIn vmci_transport_packet_init memset the vmci_transport_packet before\npopulating the fields to avoid any uninitialised data being left in the\nstructure."
}
],
"providerMetadata": {
"dateUpdated": "2026-05-11T21:27:18.658Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/19c2cc01ff9a8031398a802676ffb0f4692dd95d"
},
{
"url": "https://git.kernel.org/stable/c/1c1bcb0e78230f533b4103e8cf271d17c3f469f0"
},
{
"url": "https://git.kernel.org/stable/c/2d44723a091bc853272e1a51a488a3d22b80be5e"
},
{
"url": "https://git.kernel.org/stable/c/0a01021317375b8d1895152f544421ce49299eb1"
},
{
"url": "https://git.kernel.org/stable/c/94d0c326cb3ee6b0f8bd00e209550b93fcc5c839"
},
{
"url": "https://git.kernel.org/stable/c/75705b44e0b9aaa74f4c163d93d388bcba9e386a"
},
{
"url": "https://git.kernel.org/stable/c/e9a673153d578fd439919a24e99851b2f87ecbce"
},
{
"url": "https://git.kernel.org/stable/c/223e2288f4b8c262a864e2c03964ffac91744cd5"
}
],
"title": "vsock/vmci: Clear the vmci transport packet properly when initializing it",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2025-38403",
"datePublished": "2025-07-25T13:08:09.954Z",
"dateReserved": "2025-04-16T04:51:24.012Z",
"dateUpdated": "2026-06-11T18:44:06.825Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2025-38415 (GCVE-0-2025-38415)
Vulnerability from cvelistv5 – Published: 2025-07-25 13:32 – Updated: 2026-06-18 20:55
VLAI
EPSS
VEX
Title
Squashfs: check return result of sb_min_blocksize
Summary
In the Linux kernel, the following vulnerability has been resolved:
Squashfs: check return result of sb_min_blocksize
Syzkaller reports an "UBSAN: shift-out-of-bounds in squashfs_bio_read" bug.
Syzkaller forks multiple processes which after mounting the Squashfs
filesystem, issues an ioctl("/dev/loop0", LOOP_SET_BLOCK_SIZE, 0x8000).
Now if this ioctl occurs at the same time another process is in the
process of mounting a Squashfs filesystem on /dev/loop0, the failure
occurs. When this happens the following code in squashfs_fill_super()
fails.
----
msblk->devblksize = sb_min_blocksize(sb, SQUASHFS_DEVBLK_SIZE);
msblk->devblksize_log2 = ffz(~msblk->devblksize);
----
sb_min_blocksize() returns 0, which means msblk->devblksize is set to 0.
As a result, ffz(~msblk->devblksize) returns 64, and msblk->devblksize_log2
is set to 64.
This subsequently causes the
UBSAN: shift-out-of-bounds in fs/squashfs/block.c:195:36
shift exponent 64 is too large for 64-bit type 'u64' (aka
'unsigned long long')
This commit adds a check for a 0 return by sb_min_blocksize().
Severity
No CVSS data available.
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
10 references
| URL | Tags |
|---|---|
| https://git.kernel.org/stable/c/db7096ea160e40d78… | |
| https://git.kernel.org/stable/c/549f9e3d7b60d5380… | |
| https://git.kernel.org/stable/c/5c51aa862cbeed2f3… | |
| https://git.kernel.org/stable/c/6abf6b78c6fb112ee… | |
| https://git.kernel.org/stable/c/4f99357dadbf9c979… | |
| https://git.kernel.org/stable/c/0aff95d9bc7fb5400… | |
| https://git.kernel.org/stable/c/295ab18c2dbce8d0a… | |
| https://git.kernel.org/stable/c/734aa85390ea693bb… | |
| https://lists.debian.org/debian-lts-announce/2025… | |
| https://lists.debian.org/debian-lts-announce/2025… |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
0aa666190509ffab81c202c5095a166be23961ac , < db7096ea160e40d78c67fce52e7cc51bde049497
(git)
Affected: 0aa666190509ffab81c202c5095a166be23961ac , < 549f9e3d7b60d53808c98b9fde49b4f46d0524a5 (git) Affected: 0aa666190509ffab81c202c5095a166be23961ac , < 5c51aa862cbeed2f3887f0382a2708956710bd68 (git) Affected: 0aa666190509ffab81c202c5095a166be23961ac , < 6abf6b78c6fb112eee495f5636ffcc350dd2ce25 (git) Affected: 0aa666190509ffab81c202c5095a166be23961ac , < 4f99357dadbf9c979ad737156ad4c37fadf7c56b (git) Affected: 0aa666190509ffab81c202c5095a166be23961ac , < 0aff95d9bc7fb5400ca8af507429c4b067bdb425 (git) Affected: 0aa666190509ffab81c202c5095a166be23961ac , < 295ab18c2dbce8d0ac6ecf7c5187e16e1ac8b282 (git) Affected: 0aa666190509ffab81c202c5095a166be23961ac , < 734aa85390ea693bb7eaf2240623d41b03705c84 (git) |
|
| Linux | Linux |
Affected:
2.6.29
Unaffected: 0 , < 2.6.29 (semver) Unaffected: 5.4.295 , ≤ 5.4.* (semver) Unaffected: 5.10.239 , ≤ 5.10.* (semver) Unaffected: 5.15.186 , ≤ 5.15.* (semver) Unaffected: 6.1.142 , ≤ 6.1.* (semver) Unaffected: 6.6.94 , ≤ 6.6.* (semver) Unaffected: 6.12.34 , ≤ 6.12.* (semver) Unaffected: 6.15.3 , ≤ 6.15.* (semver) Unaffected: 6.16 , ≤ * (original_commit_for_fix) |
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2025-11-03T17:37:45.927Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"
},
{
"url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2025-38415",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-18T20:55:21.631432Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-06-18T20:55:27.614Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"fs/squashfs/super.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "db7096ea160e40d78c67fce52e7cc51bde049497",
"status": "affected",
"version": "0aa666190509ffab81c202c5095a166be23961ac",
"versionType": "git"
},
{
"lessThan": "549f9e3d7b60d53808c98b9fde49b4f46d0524a5",
"status": "affected",
"version": "0aa666190509ffab81c202c5095a166be23961ac",
"versionType": "git"
},
{
"lessThan": "5c51aa862cbeed2f3887f0382a2708956710bd68",
"status": "affected",
"version": "0aa666190509ffab81c202c5095a166be23961ac",
"versionType": "git"
},
{
"lessThan": "6abf6b78c6fb112eee495f5636ffcc350dd2ce25",
"status": "affected",
"version": "0aa666190509ffab81c202c5095a166be23961ac",
"versionType": "git"
},
{
"lessThan": "4f99357dadbf9c979ad737156ad4c37fadf7c56b",
"status": "affected",
"version": "0aa666190509ffab81c202c5095a166be23961ac",
"versionType": "git"
},
{
"lessThan": "0aff95d9bc7fb5400ca8af507429c4b067bdb425",
"status": "affected",
"version": "0aa666190509ffab81c202c5095a166be23961ac",
"versionType": "git"
},
{
"lessThan": "295ab18c2dbce8d0ac6ecf7c5187e16e1ac8b282",
"status": "affected",
"version": "0aa666190509ffab81c202c5095a166be23961ac",
"versionType": "git"
},
{
"lessThan": "734aa85390ea693bb7eaf2240623d41b03705c84",
"status": "affected",
"version": "0aa666190509ffab81c202c5095a166be23961ac",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"fs/squashfs/super.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.29"
},
{
"lessThan": "2.6.29",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"version": "5.4.295",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.239",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.186",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.142",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.94",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.34",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.15.*",
"status": "unaffected",
"version": "6.15.3",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.16",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.4.295",
"versionStartIncluding": "2.6.29",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.10.239",
"versionStartIncluding": "2.6.29",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.15.186",
"versionStartIncluding": "2.6.29",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.142",
"versionStartIncluding": "2.6.29",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.94",
"versionStartIncluding": "2.6.29",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.34",
"versionStartIncluding": "2.6.29",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.15.3",
"versionStartIncluding": "2.6.29",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.16",
"versionStartIncluding": "2.6.29",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nSquashfs: check return result of sb_min_blocksize\n\nSyzkaller reports an \"UBSAN: shift-out-of-bounds in squashfs_bio_read\" bug.\n\nSyzkaller forks multiple processes which after mounting the Squashfs\nfilesystem, issues an ioctl(\"/dev/loop0\", LOOP_SET_BLOCK_SIZE, 0x8000). \nNow if this ioctl occurs at the same time another process is in the\nprocess of mounting a Squashfs filesystem on /dev/loop0, the failure\noccurs. When this happens the following code in squashfs_fill_super()\nfails.\n\n----\nmsblk-\u003edevblksize = sb_min_blocksize(sb, SQUASHFS_DEVBLK_SIZE);\nmsblk-\u003edevblksize_log2 = ffz(~msblk-\u003edevblksize);\n----\n\nsb_min_blocksize() returns 0, which means msblk-\u003edevblksize is set to 0.\n\nAs a result, ffz(~msblk-\u003edevblksize) returns 64, and msblk-\u003edevblksize_log2\nis set to 64.\n\nThis subsequently causes the\n\nUBSAN: shift-out-of-bounds in fs/squashfs/block.c:195:36\nshift exponent 64 is too large for 64-bit type \u0027u64\u0027 (aka\n\u0027unsigned long long\u0027)\n\nThis commit adds a check for a 0 return by sb_min_blocksize()."
}
],
"providerMetadata": {
"dateUpdated": "2026-05-11T21:27:32.721Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/db7096ea160e40d78c67fce52e7cc51bde049497"
},
{
"url": "https://git.kernel.org/stable/c/549f9e3d7b60d53808c98b9fde49b4f46d0524a5"
},
{
"url": "https://git.kernel.org/stable/c/5c51aa862cbeed2f3887f0382a2708956710bd68"
},
{
"url": "https://git.kernel.org/stable/c/6abf6b78c6fb112eee495f5636ffcc350dd2ce25"
},
{
"url": "https://git.kernel.org/stable/c/4f99357dadbf9c979ad737156ad4c37fadf7c56b"
},
{
"url": "https://git.kernel.org/stable/c/0aff95d9bc7fb5400ca8af507429c4b067bdb425"
},
{
"url": "https://git.kernel.org/stable/c/295ab18c2dbce8d0ac6ecf7c5187e16e1ac8b282"
},
{
"url": "https://git.kernel.org/stable/c/734aa85390ea693bb7eaf2240623d41b03705c84"
}
],
"title": "Squashfs: check return result of sb_min_blocksize",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2025-38415",
"datePublished": "2025-07-25T13:32:09.711Z",
"dateReserved": "2025-04-16T04:51:24.013Z",
"dateUpdated": "2026-06-18T20:55:27.614Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2025-38730 (GCVE-0-2025-38730)
Vulnerability from cvelistv5 – Published: 2025-09-04 15:33 – Updated: 2026-08-05 12:04
VLAI
EPSS
VEX
Title
io_uring/net: commit partial buffers on retry
Summary
In the Linux kernel, the following vulnerability has been resolved:
io_uring/net: commit partial buffers on retry
Ring provided buffers are potentially only valid within the single
execution context in which they were acquired. io_uring deals with this
and invalidates them on retry. But on the networking side, if
MSG_WAITALL is set, or if the socket is of the streaming type and too
little was processed, then it will hang on to the buffer rather than
recycle or commit it. This is problematic for two reasons:
1) If someone unregisters the provided buffer ring before a later retry,
then the req->buf_list will no longer be valid.
2) If multiple sockers are using the same buffer group, then multiple
receives can consume the same memory. This can cause data corruption
in the application, as either receive could land in the same
userspace buffer.
Fix this by disallowing partial retries from pinning a provided buffer
across multiple executions, if ring provided buffers are used.
Severity
7.8 (High)
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
c56e022c0a27142b7b59ae6bdf45f86bf4b298a1 , < 3b53dc1c641f2884d4750fc25aaf6c36b90db606
(git)
Affected: c56e022c0a27142b7b59ae6bdf45f86bf4b298a1 , < fe9da1812f8697a38f7e30991d568ec199e16059 (git) Affected: c56e022c0a27142b7b59ae6bdf45f86bf4b298a1 , < 21a4ddb0f5e933f372808c10b9ac704505751bb1 (git) Affected: c56e022c0a27142b7b59ae6bdf45f86bf4b298a1 , < 2eb7937b5fc7fcd90eab7bebb0181214b61b9283 (git) Affected: c56e022c0a27142b7b59ae6bdf45f86bf4b298a1 , < 41b70df5b38bc80967d2e0ed55cc3c3896bba781 (git) |
|
| Linux | Linux |
Affected:
6.4
Unaffected: 0 , < 6.4 (semver) Unaffected: 6.6.103 , ≤ 6.6.* (semver) Unaffected: 6.12.44 , ≤ 6.12.* (semver) Unaffected: 6.15.11 , ≤ 6.15.* (semver) Unaffected: 6.16.2 , ≤ 6.16.* (semver) Unaffected: 6.17 , ≤ * (original_commit_for_fix) |
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"io_uring/net.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "3b53dc1c641f2884d4750fc25aaf6c36b90db606",
"status": "affected",
"version": "c56e022c0a27142b7b59ae6bdf45f86bf4b298a1",
"versionType": "git"
},
{
"lessThan": "fe9da1812f8697a38f7e30991d568ec199e16059",
"status": "affected",
"version": "c56e022c0a27142b7b59ae6bdf45f86bf4b298a1",
"versionType": "git"
},
{
"lessThan": "21a4ddb0f5e933f372808c10b9ac704505751bb1",
"status": "affected",
"version": "c56e022c0a27142b7b59ae6bdf45f86bf4b298a1",
"versionType": "git"
},
{
"lessThan": "2eb7937b5fc7fcd90eab7bebb0181214b61b9283",
"status": "affected",
"version": "c56e022c0a27142b7b59ae6bdf45f86bf4b298a1",
"versionType": "git"
},
{
"lessThan": "41b70df5b38bc80967d2e0ed55cc3c3896bba781",
"status": "affected",
"version": "c56e022c0a27142b7b59ae6bdf45f86bf4b298a1",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"io_uring/net.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "6.4"
},
{
"lessThan": "6.4",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.103",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.44",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.15.*",
"status": "unaffected",
"version": "6.15.11",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.16.*",
"status": "unaffected",
"version": "6.16.2",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.17",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.103",
"versionStartIncluding": "6.4",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.44",
"versionStartIncluding": "6.4",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.15.11",
"versionStartIncluding": "6.4",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.16.2",
"versionStartIncluding": "6.4",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.17",
"versionStartIncluding": "6.4",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring/net: commit partial buffers on retry\n\nRing provided buffers are potentially only valid within the single\nexecution context in which they were acquired. io_uring deals with this\nand invalidates them on retry. But on the networking side, if\nMSG_WAITALL is set, or if the socket is of the streaming type and too\nlittle was processed, then it will hang on to the buffer rather than\nrecycle or commit it. This is problematic for two reasons:\n\n1) If someone unregisters the provided buffer ring before a later retry,\n then the req-\u003ebuf_list will no longer be valid.\n\n2) If multiple sockers are using the same buffer group, then multiple\n receives can consume the same memory. This can cause data corruption\n in the application, as either receive could land in the same\n userspace buffer.\n\nFix this by disallowing partial retries from pinning a provided buffer\nacross multiple executions, if ring provided buffers are used."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 7.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"scenarios": [
{
"lang": "en",
"value": "AV:L - The vulnerability is reached through the io_uring submission/registration syscall interface (`io_uring_setup`, `IORING_REGISTER_PBUF_RING`/`IORING_UNREGISTER_PBUF_RING`, SQE submission), which requires local access to the machine. Per kernel scoring guidance io_uring is a local attack surface, even though the socket data that triggers the partial-transfer state can come from a peer.\nAC:L - The attacker controls every element of the sequence \u2014 it owns both ends of the socket (socketpair or loopback TCP), so it decides exactly when a short `MSG_WAITALL` read occurs and when the remainder is delivered, and it issues the `IORING_UNREGISTER_PBUF_RING` in between. This is deterministic ordering rather than a race, and heap grooming of the freed `io_buffer_list` slot is standard and attacker-influenced.\nPR:L - Only an ordinary unprivileged local user account is needed; creating an io_uring instance, registering/unregistering a provided buffer ring, and creating sockets require no capabilities and no user-namespace tricks. No `CAP_*` check exists anywhere on the path.\nUI:N - The attacking process performs all steps itself within its own io_uring instance and sockets. No victim action or interaction is required.\nS:U - The corruption is of kernel heap memory belonging to the same kernel security authority, giving a classic local privilege escalation. No VM, IOMMU, or other security-authority boundary is crossed.\nC:H - The stale `req-\u003ebuf_list` is dereferenced after `kfree()`, and in the `IOBL_INC` path `bl-\u003ebuf_ring`, `bl-\u003ehead` and `bl-\u003emask` are all read from the reclaimed object and used to dereference an attacker-chosen address, yielding an arbitrary kernel read primitive. Additionally the buffer-aliasing half of the bug leaks one socket\u0027s received data into a buffer owned by another connection.\nI:H - `io_kbuf_commit()` writes `bl-\u003ehead += nr` into freed memory, and `io_kbuf_inc_commit()` performs `buf-\u003elen -= this_len; buf-\u003eaddr += this_len` through a fully attacker-controlled pointer, giving an arbitrary read-modify-write that is readily leveraged into control-flow hijack and root escalation. The bug also silently corrupts application data across sockets sharing a buffer group.\nA:H - Using a freed `struct io_buffer_list` and dereferencing its stale `buf_ring` pointer reliably produces an oops/panic (KASAN use-after-free, wild pointer write), and the attacker can repeat it at will to bring the system down."
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-05T12:04:20.617Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/3b53dc1c641f2884d4750fc25aaf6c36b90db606"
},
{
"url": "https://git.kernel.org/stable/c/fe9da1812f8697a38f7e30991d568ec199e16059"
},
{
"url": "https://git.kernel.org/stable/c/21a4ddb0f5e933f372808c10b9ac704505751bb1"
},
{
"url": "https://git.kernel.org/stable/c/2eb7937b5fc7fcd90eab7bebb0181214b61b9283"
},
{
"url": "https://git.kernel.org/stable/c/41b70df5b38bc80967d2e0ed55cc3c3896bba781"
}
],
"title": "io_uring/net: commit partial buffers on retry",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2025-38730",
"datePublished": "2025-09-04T15:33:27.691Z",
"dateReserved": "2025-04-16T04:51:24.033Z",
"dateUpdated": "2026-08-05T12:04:20.617Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2025-39933 (GCVE-0-2025-39933)
Vulnerability from cvelistv5 – Published: 2025-10-04 07:30 – Updated: 2026-08-05 12:06
VLAI
EPSS
VEX
Title
smb: client: let recv_done verify data_offset, data_length and remaining_data_length
Summary
In the Linux kernel, the following vulnerability has been resolved:
smb: client: let recv_done verify data_offset, data_length and remaining_data_length
This is inspired by the related server fixes.
Severity
9.4 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
f198186aa9bbd60fae7a2061f4feec614d880299 , < 581fb78e0388b78911b0c920e4073737090c8b5f
(git)
Affected: f198186aa9bbd60fae7a2061f4feec614d880299 , < f57e53ea252363234f86674db475839e5b87102e (git) |
|
| Linux | Linux |
Affected:
4.16
Unaffected: 0 , < 4.16 (semver) Unaffected: 6.16.9 , ≤ 6.16.* (semver) Unaffected: 6.17 , ≤ * (original_commit_for_fix) |
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2025-39933",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-10T20:40:59.041091Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-06-11T18:44:07.641Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"fs/smb/client/smbdirect.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "581fb78e0388b78911b0c920e4073737090c8b5f",
"status": "affected",
"version": "f198186aa9bbd60fae7a2061f4feec614d880299",
"versionType": "git"
},
{
"lessThan": "f57e53ea252363234f86674db475839e5b87102e",
"status": "affected",
"version": "f198186aa9bbd60fae7a2061f4feec614d880299",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"fs/smb/client/smbdirect.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "4.16"
},
{
"lessThan": "4.16",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.16.*",
"status": "unaffected",
"version": "6.16.9",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.17",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.16.9",
"versionStartIncluding": "4.16",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.17",
"versionStartIncluding": "4.16",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: let recv_done verify data_offset, data_length and remaining_data_length\n\nThis is inspired by the related server fixes."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 9.4,
"baseSeverity": "CRITICAL",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H",
"version": "3.1"
},
"scenarios": [
{
"lang": "en",
"value": "AV:N - The vulnerable code parses `smbdirect_data_transfer` headers received directly from a remote SMB server over RDMA, and iWARP/RoCEv2 are routable over ordinary IP networks (soft-iWARP/soft-RoCE need no special hardware). A malicious, compromised, or spoofed SMB Direct peer reaches `recv_done()` purely over the network.\nAC:L - The attacker writes `data_offset`/`data_length` as plain header fields in a single crafted data-transfer message; there is no race, no memory-layout precondition, and the out-of-bounds read is deterministic and repeatable at an offset of the attacker\u0027s choosing.\nPR:N - `recv_done()` switches to `SMBDIRECT_EXPECT_DATA_TRANSFER` as soon as the unauthenticated transport-level SMBD negotiate completes, so the malformed packet is processed before SMB2 NEGOTIATE/SESSION_SETUP and before any signing or encryption is established \u2014 the peer needs no credentials on the client.\nUI:N - Once an SMB Direct mount exists (including automounts, fstab, DFS referrals, and automatic reconnects), a hostile or compromised server can send the crafted frame at any time and the client processes it automatically in its receive-completion and demultiplex paths. No administrator or user action is required at the moment of attack.\nS:U - The out-of-bounds access, the disclosed data, and the resulting fault are all confined to the client kernel\u0027s own security authority; no hypervisor, IOMMU, or sandbox boundary is crossed.\nC:H - The unvalidated 32-bit `data_offset` makes `copy_to_iter()` read from an attacker-chosen address up to 4 GiB past a ~2 KB receive-buffer slab object, and the inflated `data_length` keeps that buffer at the queue head so `offset` advances on each call \u2014 allowing a remote peer to stream out large amounts of kernel memory, which is then delivered to userspace as SMB response/file content.\nI:L - There is no out-of-bounds write, but the client assembles and parses SMB2 responses built from out-of-bounds kernel memory, so connection state, file metadata, and page-cache contents returned to applications are driven by data the attacker caused the kernel to read from outside the intended buffer.\nA:H - A large `data_offset` faults on unmapped memory or a vmalloc guard page in the demultiplex/softirq path, and an inflated `data_length` desynchronizes `reassembly.data_length` so `_get_first_reassembly()` returns NULL and is immediately dereferenced \u2014 either way an oops (full panic with `panic_on_oops`) that tears down the mount."
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-05T12:06:12.616Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/581fb78e0388b78911b0c920e4073737090c8b5f"
},
{
"url": "https://git.kernel.org/stable/c/f57e53ea252363234f86674db475839e5b87102e"
}
],
"title": "smb: client: let recv_done verify data_offset, data_length and remaining_data_length",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2025-39933",
"datePublished": "2025-10-04T07:30:57.496Z",
"dateReserved": "2025-04-16T07:20:57.148Z",
"dateUpdated": "2026-08-05T12:06:12.616Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2025-40133 (GCVE-0-2025-40133)
Vulnerability from cvelistv5 – Published: 2025-11-12 10:23 – Updated: 2026-08-05 12:07
VLAI
EPSS
VEX
Title
mptcp: Use __sk_dst_get() and dst_dev_rcu() in mptcp_active_enable().
Summary
In the Linux kernel, the following vulnerability has been resolved:
mptcp: Use __sk_dst_get() and dst_dev_rcu() in mptcp_active_enable().
mptcp_active_enable() is called from subflow_finish_connect(),
which is icsk->icsk_af_ops->sk_rx_dst_set() and it's not always
under RCU.
Using sk_dst_get(sk)->dev could trigger UAF.
Let's use __sk_dst_get() and dst_dev_rcu().
Severity
8.1 (High)
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
27069e7cb3d1cea9377069266acf19b9cc5ad0ae , < ad16235c9d3ef7ec17c109ff39b7504f49d17072
(git)
Affected: 27069e7cb3d1cea9377069266acf19b9cc5ad0ae , < cc976ec9e38bb79409de3261ba1dbb6868e2a53e (git) Affected: 27069e7cb3d1cea9377069266acf19b9cc5ad0ae , < 893c49a78d9f85e4b8081b908fb7c407d018106a (git) |
|
| Linux | Linux |
Affected:
6.12
Unaffected: 0 , < 6.12 (semver) Unaffected: 6.12.55 , ≤ 6.12.* (semver) Unaffected: 6.17.3 , ≤ 6.17.* (semver) Unaffected: 6.18 , ≤ * (original_commit_for_fix) |
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"net/mptcp/ctrl.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "ad16235c9d3ef7ec17c109ff39b7504f49d17072",
"status": "affected",
"version": "27069e7cb3d1cea9377069266acf19b9cc5ad0ae",
"versionType": "git"
},
{
"lessThan": "cc976ec9e38bb79409de3261ba1dbb6868e2a53e",
"status": "affected",
"version": "27069e7cb3d1cea9377069266acf19b9cc5ad0ae",
"versionType": "git"
},
{
"lessThan": "893c49a78d9f85e4b8081b908fb7c407d018106a",
"status": "affected",
"version": "27069e7cb3d1cea9377069266acf19b9cc5ad0ae",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"net/mptcp/ctrl.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "6.12"
},
{
"lessThan": "6.12",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.55",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.17.*",
"status": "unaffected",
"version": "6.17.3",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.18",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.55",
"versionStartIncluding": "6.12",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.17.3",
"versionStartIncluding": "6.12",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.18",
"versionStartIncluding": "6.12",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: Use __sk_dst_get() and dst_dev_rcu() in mptcp_active_enable().\n\nmptcp_active_enable() is called from subflow_finish_connect(),\nwhich is icsk-\u003eicsk_af_ops-\u003esk_rx_dst_set() and it\u0027s not always\nunder RCU.\n\nUsing sk_dst_get(sk)-\u003edev could trigger UAF.\n\nLet\u0027s use __sk_dst_get() and dst_dev_rcu()."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 8.1,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"scenarios": [
{
"lang": "en",
"value": "AV:N - The stale `dst-\u003edev` dereference executes while processing a remote peer\u0027s SYN-ACK \u2014 `tcp_finish_connect()` \u2192 `icsk_af_ops-\u003esk_rx_dst_set()` \u2192 `subflow_finish_connect()` \u2192 `mptcp_active_enable()` \u2014 so remote network data drives entry into the vulnerable code, and the peer also controls the MP_CAPABLE/blackhole state that unlocks the guarded block. Any MPTCP-enabled host making outbound connections (mobile/carrier stacks, mptcpize\u0027d services, MPTCP proxies) is exposed to a malicious or on-path server.\nAC:H - The attacker controls one side of the race (when the SYN-ACK arrives and thus when `dst-\u003edev` is read), but the other side requires the route\u0027s `net_device` to be concurrently unregistered so `dst_dev_put()`/`netdev_ref_replace()` drops the last reference and `free_netdev()` runs \u2014 a local netdev-teardown event a remote peer can neither induce nor time, as is landing the SYN-ACK in the socket backlog (non-RCU process context) rather than softirq.\nPR:N - The vulnerable code runs during the TCP/MPTCP handshake itself, before any application-level authentication or credential exchange, so the remote peer needs no privileges or account of any kind on the target.\nUI:N - Outbound MPTCP connections are made automatically by daemons, mobile connectivity stacks, and proxies without any human action, and an on-path attacker can simply inject the MP_CAPABLE SYN-ACK for a connection the host initiates on its own.\nS:U - The use-after-free is on a kernel `struct net_device` and its effects stay within the kernel\u0027s own security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - This is a use-after-free read of a freed, heap-sprayable `net_device`, and a reclaimed slab can be groomed with attacker-influenced data, giving a read primitive over reclaimed kernel memory; the value read (`dev-\u003eflags \u0026 IFF_LOOPBACK`) further acts as an oracle since it determines whether `active_disable_times` is cleared, which is observable through subsequent MPTCP fallback behaviour and the MPTCP MIB counters.\nI:H - A use-after-free on a `net_device` is a heap-corruption primitive whose reclaimed contents are attacker-influenceable via spraying, and here freed memory directly steers a kernel state write (`atomic_set(\u0026pernet-\u003eactive_disable_times, 0)`), letting uncontrolled reclaimed data modify per-namespace MPTCP protocol state and, once the slab is groomed, be escalated toward arbitrary write and control-flow hijack.\nA:H - Dereferencing a freed `net_device` \u2014 allocated with `kvzalloc` and potentially unmapped on free \u2014 reliably produces a kernel oops or panic even when not weaponized, and the trigger can be retried indefinitely for a persistent denial of service."
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-05T12:07:59.353Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/ad16235c9d3ef7ec17c109ff39b7504f49d17072"
},
{
"url": "https://git.kernel.org/stable/c/cc976ec9e38bb79409de3261ba1dbb6868e2a53e"
},
{
"url": "https://git.kernel.org/stable/c/893c49a78d9f85e4b8081b908fb7c407d018106a"
}
],
"title": "mptcp: Use __sk_dst_get() and dst_dev_rcu() in mptcp_active_enable().",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2025-40133",
"datePublished": "2025-11-12T10:23:22.498Z",
"dateReserved": "2025-04-16T07:20:57.170Z",
"dateUpdated": "2026-08-05T12:07:59.353Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2025-40304 (GCVE-0-2025-40304)
Vulnerability from cvelistv5 – Published: 2025-12-08 00:46 – Updated: 2026-08-05 12:09
VLAI
EPSS
VEX
Title
fbdev: Add bounds checking in bit_putcs to fix vmalloc-out-of-bounds
Summary
In the Linux kernel, the following vulnerability has been resolved:
fbdev: Add bounds checking in bit_putcs to fix vmalloc-out-of-bounds
Add bounds checking to prevent writes past framebuffer boundaries when
rendering text near screen edges. Return early if the Y position is off-screen
and clip image height to screen boundary. Break from the rendering loop if the
X position is off-screen. When clipping image width to fit the screen, update
the character count to match the clipped width to prevent buffer size
mismatches.
Without the character count update, bit_putcs_aligned and bit_putcs_unaligned
receive mismatched parameters where the buffer is allocated for the clipped
width but cnt reflects the original larger count, causing out-of-bounds writes.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://git.kernel.org/stable/c/996bfaa7372d6718b… | |
| https://git.kernel.org/stable/c/f0982400648a3e005… | |
| https://git.kernel.org/stable/c/1943b69e87b0ab350… | |
| https://git.kernel.org/stable/c/ebc0730b490c7f273… | |
| https://git.kernel.org/stable/c/86df8ade88d290725… | |
| https://git.kernel.org/stable/c/15ba9acafb0517f83… | |
| https://git.kernel.org/stable/c/2d1359e11674ed427… | |
| https://git.kernel.org/stable/c/3637d34b35b287ab8… |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 996bfaa7372d6718b6d860bdf78f6618e850c702
(git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < f0982400648a3e00580253e0c48e991f34d2684c (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 1943b69e87b0ab35032d47de0a7fca9a3d1d6fc1 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < ebc0730b490c7f27340b1222e01dd106e820320d (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 86df8ade88d290725554cefd03101ecd0fbd3752 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 15ba9acafb0517f8359ca30002c189a68ddbb939 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 2d1359e11674ed4274934eac8a71877ae5ae7bbb (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 3637d34b35b287ab830e66048841ace404382b67 (git) |
|
| Linux | Linux |
Affected:
2.6.12
Unaffected: 0 , < 2.6.12 (semver) Unaffected: 5.4.302 , ≤ 5.4.* (semver) Unaffected: 5.10.247 , ≤ 5.10.* (semver) Unaffected: 5.15.197 , ≤ 5.15.* (semver) Unaffected: 6.1.159 , ≤ 6.1.* (semver) Unaffected: 6.6.117 , ≤ 6.6.* (semver) Unaffected: 6.12.58 , ≤ 6.12.* (semver) Unaffected: 6.17.8 , ≤ 6.17.* (semver) Unaffected: 6.18 , ≤ * (original_commit_for_fix) |
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2025-40304",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-16T19:54:32.739808Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-06-16T19:54:41.944Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/video/fbdev/core/bitblit.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "996bfaa7372d6718b6d860bdf78f6618e850c702",
"status": "affected",
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"versionType": "git"
},
{
"lessThan": "f0982400648a3e00580253e0c48e991f34d2684c",
"status": "affected",
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"versionType": "git"
},
{
"lessThan": "1943b69e87b0ab35032d47de0a7fca9a3d1d6fc1",
"status": "affected",
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"versionType": "git"
},
{
"lessThan": "ebc0730b490c7f27340b1222e01dd106e820320d",
"status": "affected",
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"versionType": "git"
},
{
"lessThan": "86df8ade88d290725554cefd03101ecd0fbd3752",
"status": "affected",
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"versionType": "git"
},
{
"lessThan": "15ba9acafb0517f8359ca30002c189a68ddbb939",
"status": "affected",
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"versionType": "git"
},
{
"lessThan": "2d1359e11674ed4274934eac8a71877ae5ae7bbb",
"status": "affected",
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"versionType": "git"
},
{
"lessThan": "3637d34b35b287ab830e66048841ace404382b67",
"status": "affected",
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/video/fbdev/core/bitblit.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.12"
},
{
"lessThan": "2.6.12",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"version": "5.4.302",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.247",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.197",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.159",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.117",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.58",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.17.*",
"status": "unaffected",
"version": "6.17.8",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.18",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.4.302",
"versionStartIncluding": "2.6.12",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.10.247",
"versionStartIncluding": "2.6.12",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.15.197",
"versionStartIncluding": "2.6.12",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.159",
"versionStartIncluding": "2.6.12",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.117",
"versionStartIncluding": "2.6.12",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.58",
"versionStartIncluding": "2.6.12",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.17.8",
"versionStartIncluding": "2.6.12",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.18",
"versionStartIncluding": "2.6.12",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfbdev: Add bounds checking in bit_putcs to fix vmalloc-out-of-bounds\n\nAdd bounds checking to prevent writes past framebuffer boundaries when\nrendering text near screen edges. Return early if the Y position is off-screen\nand clip image height to screen boundary. Break from the rendering loop if the\nX position is off-screen. When clipping image width to fit the screen, update\nthe character count to match the clipped width to prevent buffer size\nmismatches.\n\nWithout the character count update, bit_putcs_aligned and bit_putcs_unaligned\nreceive mismatched parameters where the buffer is allocated for the clipped\nwidth but cnt reflects the original larger count, causing out-of-bounds writes."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 7.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"scenarios": [
{
"lang": "en",
"value": "AV:L - Exploitation requires local access to the framebuffer character device (`/dev/fbN` ioctls FBIOPUT_CON2FBMAP / FBIOPUT_VSCREENINFO) and/or a virtual console, plus a write to the console to trigger the redraw. There is no remote or network-reachable path into fbcon\u0027s glyph blitting.\nAC:L - The reproducer is deterministic \u2014 an ioctl puts the VC geometry out of sync with the framebuffer resolution and the very next console redraw performs the out-of-bounds write; syzbot produced a reliable reproducer and confirmed the fix. No race, no memory-layout luck, and no unusual configuration is required (fbcon with DRM fbdev emulation is the default on ordinary systems).\nPR:L - No capability check exists anywhere on the path: `fbcon_set_con2fb_map_ioctl()` and the `FBIOPUT_CON2FBMAP`/`FBIOPUT_VSCREENINFO` handlers perform no `capable()` test, and the VT resize/mode ioctls only require being the owner of the controlling tty. Any unprivileged local user holding the usual graphics/console device access (group `video`, logind uaccess ACLs, Android/kiosk/embedded graphics processes) can reach it.\nUI:N - The attacker performs every step themselves \u2014 issue the ioctl to desynchronize the console geometry, then write bytes to their own console fd to force the redraw. No victim action or interaction is needed.\nS:U - The corruption occurs in kernel virtual memory and is exploited to escalate within the same kernel security authority. No hypervisor, IOMMU, or sandbox boundary is crossed.\nC:H - The bug yields an out-of-bounds write with an attacker-influenced offset into the vmalloc region, adjacent to other DRM GEM shmem vmapped buffers and kernel objects, which is readily leveraged into arbitrary kernel memory disclosure (e.g. by corrupting neighbouring buffer pointers/lengths or other clients\u0027 graphics buffers that the attacker can mmap).\nI:H - This is a controlled out-of-bounds write: the destination offset is derived from attacker-set VC geometry and font metrics, and the written content is attacker-chosen (console text rendered through a user-supplied font via KDFONTOP), giving a powerful kernel write primitive suitable for privilege escalation.\nA:H - The out-of-bounds write past the vmalloc\u0027d framebuffer corrupts adjacent kernel memory or hits an unmapped guard page, producing a KASAN-confirmed vmalloc-out-of-bounds write and, in production kernels, an oops/panic that can be triggered repeatedly."
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-05T12:09:23.704Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/996bfaa7372d6718b6d860bdf78f6618e850c702"
},
{
"url": "https://git.kernel.org/stable/c/f0982400648a3e00580253e0c48e991f34d2684c"
},
{
"url": "https://git.kernel.org/stable/c/1943b69e87b0ab35032d47de0a7fca9a3d1d6fc1"
},
{
"url": "https://git.kernel.org/stable/c/ebc0730b490c7f27340b1222e01dd106e820320d"
},
{
"url": "https://git.kernel.org/stable/c/86df8ade88d290725554cefd03101ecd0fbd3752"
},
{
"url": "https://git.kernel.org/stable/c/15ba9acafb0517f8359ca30002c189a68ddbb939"
},
{
"url": "https://git.kernel.org/stable/c/2d1359e11674ed4274934eac8a71877ae5ae7bbb"
},
{
"url": "https://git.kernel.org/stable/c/3637d34b35b287ab830e66048841ace404382b67"
}
],
"title": "fbdev: Add bounds checking in bit_putcs to fix vmalloc-out-of-bounds",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2025-40304",
"datePublished": "2025-12-08T00:46:29.013Z",
"dateReserved": "2025-04-16T07:20:57.185Z",
"dateUpdated": "2026-08-05T12:09:23.704Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2025-40322 (GCVE-0-2025-40322)
Vulnerability from cvelistv5 – Published: 2025-12-08 00:46 – Updated: 2026-08-05 12:09
VLAI
EPSS
VEX
Title
fbdev: bitblit: bound-check glyph index in bit_putcs*
Summary
In the Linux kernel, the following vulnerability has been resolved:
fbdev: bitblit: bound-check glyph index in bit_putcs*
bit_putcs_aligned()/unaligned() derived the glyph pointer from the
character value masked by 0xff/0x1ff, which may exceed the actual font's
glyph count and read past the end of the built-in font array.
Clamp the index to the actual glyph count before computing the address.
This fixes a global out-of-bounds read reported by syzbot.
Severity
7.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://git.kernel.org/stable/c/a10cede006f9614b4… | |
| https://git.kernel.org/stable/c/0998a6cb232674408… | |
| https://git.kernel.org/stable/c/db5c9a162d2f42bcc… | |
| https://git.kernel.org/stable/c/c12003bf91fdff381… | |
| https://git.kernel.org/stable/c/9ba1a7802ca9a2590… | |
| https://git.kernel.org/stable/c/901f44227072be608… | |
| https://git.kernel.org/stable/c/efaf89a75a29b2d17… | |
| https://git.kernel.org/stable/c/18c4ef4e765a798b4… |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < a10cede006f9614b465cf25609a8753efbfd45cc
(git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 0998a6cb232674408a03e8561dc15aa266b2f53b (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < db5c9a162d2f42bcc842b76b3d935dcc050a0eec (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < c12003bf91fdff381c55ef54fef3e961a5af2545 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 9ba1a7802ca9a2590cef95b253e6526f4364477f (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 901f44227072be60812fe8083e83e1533c04eed1 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < efaf89a75a29b2d179bf4fe63ca62852e93ad620 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 18c4ef4e765a798b47980555ed665d78b71aeadf (git) |
|
| Linux | Linux |
Affected:
2.6.12
Unaffected: 0 , < 2.6.12 (semver) Unaffected: 5.4.302 , ≤ 5.4.* (semver) Unaffected: 5.10.247 , ≤ 5.10.* (semver) Unaffected: 5.15.197 , ≤ 5.15.* (semver) Unaffected: 6.1.159 , ≤ 6.1.* (semver) Unaffected: 6.6.117 , ≤ 6.6.* (semver) Unaffected: 6.12.58 , ≤ 6.12.* (semver) Unaffected: 6.17.8 , ≤ 6.17.* (semver) Unaffected: 6.18 , ≤ * (original_commit_for_fix) |
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2025-40322",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-16T19:33:40.857434Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-06-16T19:34:17.887Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/video/fbdev/core/bitblit.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "a10cede006f9614b465cf25609a8753efbfd45cc",
"status": "affected",
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"versionType": "git"
},
{
"lessThan": "0998a6cb232674408a03e8561dc15aa266b2f53b",
"status": "affected",
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"versionType": "git"
},
{
"lessThan": "db5c9a162d2f42bcc842b76b3d935dcc050a0eec",
"status": "affected",
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"versionType": "git"
},
{
"lessThan": "c12003bf91fdff381c55ef54fef3e961a5af2545",
"status": "affected",
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"versionType": "git"
},
{
"lessThan": "9ba1a7802ca9a2590cef95b253e6526f4364477f",
"status": "affected",
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"versionType": "git"
},
{
"lessThan": "901f44227072be60812fe8083e83e1533c04eed1",
"status": "affected",
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"versionType": "git"
},
{
"lessThan": "efaf89a75a29b2d179bf4fe63ca62852e93ad620",
"status": "affected",
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"versionType": "git"
},
{
"lessThan": "18c4ef4e765a798b47980555ed665d78b71aeadf",
"status": "affected",
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/video/fbdev/core/bitblit.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.12"
},
{
"lessThan": "2.6.12",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"version": "5.4.302",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.247",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.197",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.159",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.117",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.58",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.17.*",
"status": "unaffected",
"version": "6.17.8",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.18",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.4.302",
"versionStartIncluding": "2.6.12",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.10.247",
"versionStartIncluding": "2.6.12",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.15.197",
"versionStartIncluding": "2.6.12",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.159",
"versionStartIncluding": "2.6.12",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.117",
"versionStartIncluding": "2.6.12",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.58",
"versionStartIncluding": "2.6.12",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.17.8",
"versionStartIncluding": "2.6.12",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.18",
"versionStartIncluding": "2.6.12",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfbdev: bitblit: bound-check glyph index in bit_putcs*\n\nbit_putcs_aligned()/unaligned() derived the glyph pointer from the\ncharacter value masked by 0xff/0x1ff, which may exceed the actual font\u0027s\nglyph count and read past the end of the built-in font array.\nClamp the index to the actual glyph count before computing the address.\n\nThis fixes a global out-of-bounds read reported by syzbot."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 7.1,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
"version": "3.1"
},
"scenarios": [
{
"lang": "en",
"value": "AV:L - The vulnerable render path is reached only through local interfaces \u2014 `KDFONTOP` ioctl on a VT plus writes to `/dev/vcsa*` or the tty itself. There is no remote or adjacent-network exposure of fbcon.\nAC:L - The attacker fully controls both the desync (choosing font dimensions that make `vc_do_resize()` fail deterministically via `new_screen_size \u003e KMALLOC_MAX_SIZE` or `!new_screen_size`) and the trigger (writing glyph indices 256\u2013511 into the screen buffer); syzbot has a working C reproducer.\nPR:L - `KDFONTOP(KD_FONT_OP_SET)` and `PIO_UNIMAP` only require `perm`, which is granted to any unprivileged user whose controlling tty is the VT (`current-\u003esignal-\u003etty == tty`) \u2014 no capability is needed, and `vcs_open()` performs no capability check at all.\nUI:N - The attacker performs the font ioctl and the console write entirely from its own process; no victim action or cooperation is needed.\nS:U - The out-of-bounds read stays within the kernel\u0027s own memory and the impact is confined to the kernel security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - Up to 256 glyph cells are read past the font array \u2014 4 KB beyond the global `fontdata_8x16`, or up to ~256 KB beyond a large user-supplied font \u2014 and those raw kernel bytes are blitted to the framebuffer as bitmaps that the attacker can read back via `/dev/fb0`, yielding a substantial kernel memory disclosure primitive.\nI:N - The defect is strictly an out-of-bounds read; the fetched bytes are copied into correctly sized pixmap and attribute buffers, so no kernel memory is modified and no write or control-flow primitive is produced.\nA:H - When the active font is a large kvmalloc-backed user font, the overrun can run hundreds of kilobytes past the allocation into a vmalloc guard page, faulting inside `bit_putcs()` while `console_lock` is held and oopsing/hanging the system; on KASAN builds it trips a report that can panic."
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-05T12:09:35.122Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/a10cede006f9614b465cf25609a8753efbfd45cc"
},
{
"url": "https://git.kernel.org/stable/c/0998a6cb232674408a03e8561dc15aa266b2f53b"
},
{
"url": "https://git.kernel.org/stable/c/db5c9a162d2f42bcc842b76b3d935dcc050a0eec"
},
{
"url": "https://git.kernel.org/stable/c/c12003bf91fdff381c55ef54fef3e961a5af2545"
},
{
"url": "https://git.kernel.org/stable/c/9ba1a7802ca9a2590cef95b253e6526f4364477f"
},
{
"url": "https://git.kernel.org/stable/c/901f44227072be60812fe8083e83e1533c04eed1"
},
{
"url": "https://git.kernel.org/stable/c/efaf89a75a29b2d179bf4fe63ca62852e93ad620"
},
{
"url": "https://git.kernel.org/stable/c/18c4ef4e765a798b47980555ed665d78b71aeadf"
}
],
"title": "fbdev: bitblit: bound-check glyph index in bit_putcs*",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2025-40322",
"datePublished": "2025-12-08T00:46:49.773Z",
"dateReserved": "2025-04-16T07:20:57.186Z",
"dateUpdated": "2026-08-05T12:09:35.122Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2025-68811 (GCVE-0-2025-68811)
Vulnerability from cvelistv5 – Published: 2026-01-13 15:29 – Updated: 2026-08-05 12:11
VLAI
EPSS
VEX
Title
svcrdma: use rc_pageoff for memcpy byte offset
Summary
In the Linux kernel, the following vulnerability has been resolved:
svcrdma: use rc_pageoff for memcpy byte offset
svc_rdma_copy_inline_range added rc_curpage (page index) to the page
base instead of the byte offset rc_pageoff. Use rc_pageoff so copies
land within the current page.
Found by ZeroPath (https://zeropath.com)
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
8e122582680c6f8acd686a5a2af9c0e46fe90f2d , < e8623e9c451e23d84b870811f42fd872b4089ef6
(git)
Affected: 8e122582680c6f8acd686a5a2af9c0e46fe90f2d , < 2a77c8dd49bccf0ca232be7c836cec1209abb8da (git) Affected: 8e122582680c6f8acd686a5a2af9c0e46fe90f2d , < a8ee9099f30654917aa68f55d707b5627e1dbf77 (git) |
|
| Linux | Linux |
Affected:
6.8
Unaffected: 0 , < 6.8 (semver) Unaffected: 6.12.64 , ≤ 6.12.* (semver) Unaffected: 6.18.3 , ≤ 6.18.* (semver) Unaffected: 6.19 , ≤ * (original_commit_for_fix) |
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2025-68811",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-16T16:28:47.245013Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-06-16T16:29:00.993Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"net/sunrpc/xprtrdma/svc_rdma_rw.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "e8623e9c451e23d84b870811f42fd872b4089ef6",
"status": "affected",
"version": "8e122582680c6f8acd686a5a2af9c0e46fe90f2d",
"versionType": "git"
},
{
"lessThan": "2a77c8dd49bccf0ca232be7c836cec1209abb8da",
"status": "affected",
"version": "8e122582680c6f8acd686a5a2af9c0e46fe90f2d",
"versionType": "git"
},
{
"lessThan": "a8ee9099f30654917aa68f55d707b5627e1dbf77",
"status": "affected",
"version": "8e122582680c6f8acd686a5a2af9c0e46fe90f2d",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"net/sunrpc/xprtrdma/svc_rdma_rw.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "6.8"
},
{
"lessThan": "6.8",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.64",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.3",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.19",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.64",
"versionStartIncluding": "6.8",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.18.3",
"versionStartIncluding": "6.8",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.19",
"versionStartIncluding": "6.8",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsvcrdma: use rc_pageoff for memcpy byte offset\n\nsvc_rdma_copy_inline_range added rc_curpage (page index) to the page\nbase instead of the byte offset rc_pageoff. Use rc_pageoff so copies\nland within the current page.\n\nFound by ZeroPath (https://zeropath.com)"
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"scenarios": [
{
"lang": "en",
"value": "AV:N - An unauthenticated client can reach the vulnerable RPC-over-RDMA receive path through a network-exposed NFS/RDMA service, including routable iWARP or RoCE deployments.\nAC:L - The attacker directly controls the chunk positions, inline length, and copied bytes; a single crafted request in a supported multi-page inline configuration deterministically reaches the faulty memcpy without a race.\nPR:N - RDMA connections and request reconstruction occur before SUNRPC credential decoding, NFS authentication, or export authorization.\nUI:N - Exploitation requires only sending the crafted RPC-over-RDMA request to a configured server, with no victim action.\nS:U - The vulnerable code and affected kernel resources remain within the host kernel\u0027s security authority.\nC:H - The controlled cross-page kernel corruption can be developed into code-execution or memory-read primitives, permitting disclosure of arbitrary kernel memory.\nI:H - Using a page index as a byte offset lets attacker-controlled data overwrite assembled request contents and cross page boundaries, enabling kernel memory corruption and potential code execution.\nA:H - Corruption of adjacent kernel pages can cause an oops or panic, and an unauthenticated attacker can repeatedly trigger the receive path."
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-05T12:11:42.662Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/e8623e9c451e23d84b870811f42fd872b4089ef6"
},
{
"url": "https://git.kernel.org/stable/c/2a77c8dd49bccf0ca232be7c836cec1209abb8da"
},
{
"url": "https://git.kernel.org/stable/c/a8ee9099f30654917aa68f55d707b5627e1dbf77"
}
],
"title": "svcrdma: use rc_pageoff for memcpy byte offset",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2025-68811",
"datePublished": "2026-01-13T15:29:17.128Z",
"dateReserved": "2025-12-24T10:30:51.047Z",
"dateUpdated": "2026-08-05T12:11:42.662Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
Loading…
Trend slope:
-
(linear fit over daily sighting counts)
Show additional events:
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
Loading…