CVE-2025-21934 (GCVE-0-2025-21934)
Vulnerability from cvelistv5 – Published: 2025-04-01 15:41 – Updated: 2026-08-05 11:55
VLAI
EPSS
VEX
Title
rapidio: fix an API misues when rio_add_net() fails
Summary
In the Linux kernel, the following vulnerability has been resolved:
rapidio: fix an API misues when rio_add_net() fails
rio_add_net() calls device_register() and fails when device_register()
fails. Thus, put_device() should be used rather than kfree(). Add
"mport->net = NULL;" to avoid a use after free issue.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-01 19:22 UTC
CWE
- CWE-416 - Use After Free
Assigner
References
10 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
e8de370188d098bb49483c287b44925957c3c9b6 , < d4ec862ce80f64db923a1d942b5d11cf6fc87d36
(git)
Affected: e8de370188d098bb49483c287b44925957c3c9b6 , < 88ddad53e4cfb6de861c6d4fb7b25427f46baed5 (git) Affected: e8de370188d098bb49483c287b44925957c3c9b6 , < cdd9f58f7fe41a55fae4305ea51fc234769fd466 (git) Affected: e8de370188d098bb49483c287b44925957c3c9b6 , < a5f5e520e8fbc6294020ff8afa36f684d92c6e6a (git) Affected: e8de370188d098bb49483c287b44925957c3c9b6 , < 2537f01d57f08c527e40bbb5862aa6ff43344898 (git) Affected: e8de370188d098bb49483c287b44925957c3c9b6 , < 22e4977141dfc6d109bf29b495bf2187b4250990 (git) Affected: e8de370188d098bb49483c287b44925957c3c9b6 , < f0aa4ee1cbbf7789907e5a3f6810de01c146c211 (git) Affected: e8de370188d098bb49483c287b44925957c3c9b6 , < b2ef51c74b0171fde7eb69b6152d3d2f743ef269 (git) |
guessed | |
| Linux | Linux |
Affected:
4.6
Unaffected: 0 , < 4.6 (semver) Unaffected: 5.4.291 , ≤ 5.4.* (semver) Unaffected: 5.10.235 , ≤ 5.10.* (semver) Unaffected: 5.15.179 , ≤ 5.15.* (semver) Unaffected: 6.1.131 , ≤ 6.1.* (semver) Unaffected: 6.6.83 , ≤ 6.6.* (semver) Unaffected: 6.12.19 , ≤ 6.12.* (semver) Unaffected: 6.13.7 , ≤ 6.13.* (semver) Unaffected: 6.14 , ≤ * (original_commit_for_fix) |
guessed |
{
"containers": {
"adp": [
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2025-21934",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-10-01T19:22:15.227028Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-416",
"description": "CWE-416 Use After Free",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2025-10-01T19:26:33.096Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
},
{
"providerMetadata": {
"dateUpdated": "2025-11-03T19:39:30.684Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html"
},
{
"url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html"
}
],
"title": "CVE Program Container"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/rapidio/devices/rio_mport_cdev.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "d4ec862ce80f64db923a1d942b5d11cf6fc87d36",
"status": "affected",
"version": "e8de370188d098bb49483c287b44925957c3c9b6",
"versionType": "git"
},
{
"lessThan": "88ddad53e4cfb6de861c6d4fb7b25427f46baed5",
"status": "affected",
"version": "e8de370188d098bb49483c287b44925957c3c9b6",
"versionType": "git"
},
{
"lessThan": "cdd9f58f7fe41a55fae4305ea51fc234769fd466",
"status": "affected",
"version": "e8de370188d098bb49483c287b44925957c3c9b6",
"versionType": "git"
},
{
"lessThan": "a5f5e520e8fbc6294020ff8afa36f684d92c6e6a",
"status": "affected",
"version": "e8de370188d098bb49483c287b44925957c3c9b6",
"versionType": "git"
},
{
"lessThan": "2537f01d57f08c527e40bbb5862aa6ff43344898",
"status": "affected",
"version": "e8de370188d098bb49483c287b44925957c3c9b6",
"versionType": "git"
},
{
"lessThan": "22e4977141dfc6d109bf29b495bf2187b4250990",
"status": "affected",
"version": "e8de370188d098bb49483c287b44925957c3c9b6",
"versionType": "git"
},
{
"lessThan": "f0aa4ee1cbbf7789907e5a3f6810de01c146c211",
"status": "affected",
"version": "e8de370188d098bb49483c287b44925957c3c9b6",
"versionType": "git"
},
{
"lessThan": "b2ef51c74b0171fde7eb69b6152d3d2f743ef269",
"status": "affected",
"version": "e8de370188d098bb49483c287b44925957c3c9b6",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/rapidio/devices/rio_mport_cdev.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "4.6"
},
{
"lessThan": "4.6",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"version": "5.4.291",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.235",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.179",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.131",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.83",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.19",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.13.*",
"status": "unaffected",
"version": "6.13.7",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.14",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.4.291",
"versionStartIncluding": "4.6",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.10.235",
"versionStartIncluding": "4.6",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.15.179",
"versionStartIncluding": "4.6",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.131",
"versionStartIncluding": "4.6",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.83",
"versionStartIncluding": "4.6",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.19",
"versionStartIncluding": "4.6",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.13.7",
"versionStartIncluding": "4.6",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.14",
"versionStartIncluding": "4.6",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nrapidio: fix an API misues when rio_add_net() fails\n\nrio_add_net() calls device_register() and fails when device_register()\nfails. Thus, put_device() should be used rather than kfree(). Add\n\"mport-\u003enet = NULL;\" to avoid a use after free issue."
}
],
"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 only through the RIO_DEV_ADD ioctl on the local character device /dev/rio_mportN, which requires local access to the system. RapidIO is a board-level fabric interconnect, not an IP network path, so no remote or adjacent reachability exists.\nAC:L - The attacker controls both sides of the unlocked mport-\u003enet race: two concurrent RIO_DEV_ADD ioctls both allocate a net and both register a device named \"rnet_\u003cid\u003e\" under the same parent, so the loser\u0027s device_register() fails deterministically with -EEXIST, and the sequence is freely retryable. Reclaiming the freed struct rio_net (which embeds a full struct device, landing in a common kmalloc cache) via standard heap spray is routine.\nPR:L - The driver performs no capable() or permission check on any ioctl path \u2014 access is gated purely by /dev/rio_mportN node permissions, and RapidIO deployments commonly delegate fabric enumeration to non-root userspace management daemons via group-accessible device nodes. An unprivileged user with access to the mport device node can fully drive the bug.\nUI:N - Exploitation is entirely self-driven through ioctl calls by the attacker\u0027s own process; no victim action, mount, or file open by another user is needed.\nS:U - The freed object, the corruption, and the resulting privilege gain all live within the kernel\u0027s own security authority, with no crossing of a VM, IOMMU, or sandbox boundary.\nC:H - The dangling mport-\u003enet is used as a struct device parent and list head, so after slab reclamation the attacker can leak kernel pointers written back into the sprayed object and dereference attacker-influenced sysfs/kobject pointers, yielding arbitrary kernel memory disclosure.\nI:H - list_add_tail(\u0026rdev-\u003enet_list, \u0026rdev-\u003enet-\u003edevices) inserts into a freed, attacker-reclaimed list head, giving a controllable write-what-where primitive, and device_add() increments a refcount inside the freed object \u2014 both leverageable into arbitrary kernel memory write and control-flow hijack.\nA:H - Even without full exploitation, the use-after-free on mport-\u003enet and the subsequent double free via rio_free_net()/device_unregister() on freed memory reliably produce slab corruption, oops, or kernel panic."
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-05T11:55:27.199Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/d4ec862ce80f64db923a1d942b5d11cf6fc87d36"
},
{
"url": "https://git.kernel.org/stable/c/88ddad53e4cfb6de861c6d4fb7b25427f46baed5"
},
{
"url": "https://git.kernel.org/stable/c/cdd9f58f7fe41a55fae4305ea51fc234769fd466"
},
{
"url": "https://git.kernel.org/stable/c/a5f5e520e8fbc6294020ff8afa36f684d92c6e6a"
},
{
"url": "https://git.kernel.org/stable/c/2537f01d57f08c527e40bbb5862aa6ff43344898"
},
{
"url": "https://git.kernel.org/stable/c/22e4977141dfc6d109bf29b495bf2187b4250990"
},
{
"url": "https://git.kernel.org/stable/c/f0aa4ee1cbbf7789907e5a3f6810de01c146c211"
},
{
"url": "https://git.kernel.org/stable/c/b2ef51c74b0171fde7eb69b6152d3d2f743ef269"
}
],
"title": "rapidio: fix an API misues when rio_add_net() fails",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2025-21934",
"datePublished": "2025-04-01T15:41:02.804Z",
"dateReserved": "2024-12-29T08:45:45.789Z",
"dateUpdated": "2026-08-05T11:55:27.199Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2025-21934",
"date": "2026-09-28",
"epss": "0.00215",
"percentile": "0.10738"
},
"microsoft_vex": {
"current_release_date": "2026-02-18T02:11:32.000Z",
"cve": "CVE-2025-21934",
"id": "msrc_CVE-2025-21934",
"initial_release_date": "2025-04-02T00:00:00.000Z",
"product_status:fixed": "5",
"product_status:known_affected": "5",
"source": "Microsoft CSAF VEX",
"status": "final",
"title": "rapidio: fix an API misues when rio_add_net() fails",
"url": "https://msrc.microsoft.com/csaf/vex/2025/msrc_cve-2025-21934.json",
"version": "2"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/rapidio/devices/rio_mport_cdev.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "d4ec862ce80f64db923a1d942b5d11cf6fc87d36",
"status": "affected",
"version": "e8de370188d098bb49483c287b44925957c3c9b6",
"versionType": "git"
},
{
"lessThan": "88ddad53e4cfb6de861c6d4fb7b25427f46baed5",
"status": "affected",
"version": "e8de370188d098bb49483c287b44925957c3c9b6",
"versionType": "git"
},
{
"lessThan": "cdd9f58f7fe41a55fae4305ea51fc234769fd466",
"status": "affected",
"version": "e8de370188d098bb49483c287b44925957c3c9b6",
"versionType": "git"
},
{
"lessThan": "a5f5e520e8fbc6294020ff8afa36f684d92c6e6a",
"status": "affected",
"version": "e8de370188d098bb49483c287b44925957c3c9b6",
"versionType": "git"
},
{
"lessThan": "2537f01d57f08c527e40bbb5862aa6ff43344898",
"status": "affected",
"version": "e8de370188d098bb49483c287b44925957c3c9b6",
"versionType": "git"
},
{
"lessThan": "22e4977141dfc6d109bf29b495bf2187b4250990",
"status": "affected",
"version": "e8de370188d098bb49483c287b44925957c3c9b6",
"versionType": "git"
},
{
"lessThan": "f0aa4ee1cbbf7789907e5a3f6810de01c146c211",
"status": "affected",
"version": "e8de370188d098bb49483c287b44925957c3c9b6",
"versionType": "git"
},
{
"lessThan": "b2ef51c74b0171fde7eb69b6152d3d2f743ef269",
"status": "affected",
"version": "e8de370188d098bb49483c287b44925957c3c9b6",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/rapidio/devices/rio_mport_cdev.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "4.6"
},
{
"lessThan": "4.6",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"version": "5.4.291",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.235",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.179",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.131",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.83",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.19",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.13.*",
"status": "unaffected",
"version": "6.13.7",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.14",
"versionType": "original_commit_for_fix"
}
]
}
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "12DA8BBB-38CB-4CD1-897F-7B5EA22A779B",
"versionEndExcluding": "5.4.291",
"versionStartIncluding": "4.6",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "545121FA-DE31-4154-9446-C2000FB4104D",
"versionEndExcluding": "5.10.235",
"versionStartIncluding": "5.5",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "C708062C-4E1B-465F-AE6D-C09C46400875",
"versionEndExcluding": "5.15.179",
"versionStartIncluding": "5.11",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "BA9C2DE3-D37C-46C6-8DCD-2EE509456E0B",
"versionEndExcluding": "6.1.131",
"versionStartIncluding": "5.16",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "7D9F642F-6E05-4926-B0FE-62F95B7266BC",
"versionEndExcluding": "6.6.83",
"versionStartIncluding": "6.2",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "32865E5C-8AE1-4D3D-A64D-299039694A88",
"versionEndExcluding": "6.12.19",
"versionStartIncluding": "6.7",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "842F5A44-3E71-4546-B4FD-43B0ACE3F32B",
"versionEndExcluding": "6.13.7",
"versionStartIncluding": "6.13",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.14:rc1:*:*:*:*:*:*",
"matchCriteriaId": "186716B6-2B66-4BD0-852E-D48E71C0C85F",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.14:rc2:*:*:*:*:*:*",
"matchCriteriaId": "0D3E781C-403A-498F-9DA9-ECEE50F41E75",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.14:rc3:*:*:*:*:*:*",
"matchCriteriaId": "66619FB8-0AAF-4166-B2CF-67B24143261D",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.14:rc4:*:*:*:*:*:*",
"matchCriteriaId": "D3D6550E-6679-4560-902D-AF52DCFE905B",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.14:rc5:*:*:*:*:*:*",
"matchCriteriaId": "45B90F6B-BEC7-4D4E-883A-9DBADE021750",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nrapidio: fix an API misues when rio_add_net() fails\n\nrio_add_net() calls device_register() and fails when device_register()\nfails. Thus, put_device() should be used rather than kfree(). Add\n\"mport-\u003enet = NULL;\" to avoid a use after free issue."
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: rapidio: se corrige un error de API cuando rio_add_net() falla. rio_add_net() llama a device_register() y falla cuando device_register() falla. Por lo tanto, se debe usar put_device() en lugar de kfree(). Se agreg\u00f3 \"mport-\u0026gt;net = NULL;\" para evitar un problema de use-after-free."
}
],
"id": "CVE-2025-21934",
"lastModified": "2026-06-17T08:44:39.013",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.8,
"impactScore": 5.9,
"source": "nvd@nist.gov",
"type": "Primary"
},
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.8,
"impactScore": 5.9,
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2025-21934",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-10-01T19:22:15.227028Z",
"version": "2.0.3"
}
}
]
},
"published": "2025-04-01T16:15:24.243",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/22e4977141dfc6d109bf29b495bf2187b4250990"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/2537f01d57f08c527e40bbb5862aa6ff43344898"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/88ddad53e4cfb6de861c6d4fb7b25427f46baed5"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/a5f5e520e8fbc6294020ff8afa36f684d92c6e6a"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/b2ef51c74b0171fde7eb69b6152d3d2f743ef269"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/cdd9f58f7fe41a55fae4305ea51fc234769fd466"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/d4ec862ce80f64db923a1d942b5d11cf6fc87d36"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/f0aa4ee1cbbf7789907e5a3f6810de01c146c211"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-416"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
},
{
"description": [
{
"lang": "en",
"value": "CWE-416"
}
],
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary"
}
]
}
},
"redhat_vex": {
"aggregate_severity": "Important",
"current_release_date": "2026-09-13T07:36:30+00:00",
"cve": "CVE-2025-21934",
"id": "CVE-2025-21934",
"initial_release_date": "2025-04-01T00:00:00+00:00",
"product_status:known_not_affected": "274",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: rapidio: fix an API misues when rio_add_net() fails",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-21934.json",
"version": "3"
},
"vulnrichment": {
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2025-11-03T19:39:30.684Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html"
},
{
"url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2025-21934",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-10-01T19:22:15.227028Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-416",
"description": "CWE-416 Use After Free",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2025-10-01T14:37:57.340Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/rapidio/devices/rio_mport_cdev.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "d4ec862ce80f64db923a1d942b5d11cf6fc87d36",
"status": "affected",
"version": "e8de370188d098bb49483c287b44925957c3c9b6",
"versionType": "git"
},
{
"lessThan": "88ddad53e4cfb6de861c6d4fb7b25427f46baed5",
"status": "affected",
"version": "e8de370188d098bb49483c287b44925957c3c9b6",
"versionType": "git"
},
{
"lessThan": "cdd9f58f7fe41a55fae4305ea51fc234769fd466",
"status": "affected",
"version": "e8de370188d098bb49483c287b44925957c3c9b6",
"versionType": "git"
},
{
"lessThan": "a5f5e520e8fbc6294020ff8afa36f684d92c6e6a",
"status": "affected",
"version": "e8de370188d098bb49483c287b44925957c3c9b6",
"versionType": "git"
},
{
"lessThan": "2537f01d57f08c527e40bbb5862aa6ff43344898",
"status": "affected",
"version": "e8de370188d098bb49483c287b44925957c3c9b6",
"versionType": "git"
},
{
"lessThan": "22e4977141dfc6d109bf29b495bf2187b4250990",
"status": "affected",
"version": "e8de370188d098bb49483c287b44925957c3c9b6",
"versionType": "git"
},
{
"lessThan": "f0aa4ee1cbbf7789907e5a3f6810de01c146c211",
"status": "affected",
"version": "e8de370188d098bb49483c287b44925957c3c9b6",
"versionType": "git"
},
{
"lessThan": "b2ef51c74b0171fde7eb69b6152d3d2f743ef269",
"status": "affected",
"version": "e8de370188d098bb49483c287b44925957c3c9b6",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/rapidio/devices/rio_mport_cdev.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "4.6"
},
{
"lessThan": "4.6",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"version": "5.4.291",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.235",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.179",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.131",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.83",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.19",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.13.*",
"status": "unaffected",
"version": "6.13.7",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.14",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.4.291",
"versionStartIncluding": "4.6",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.10.235",
"versionStartIncluding": "4.6",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.15.179",
"versionStartIncluding": "4.6",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.131",
"versionStartIncluding": "4.6",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.83",
"versionStartIncluding": "4.6",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.19",
"versionStartIncluding": "4.6",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.13.7",
"versionStartIncluding": "4.6",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.14",
"versionStartIncluding": "4.6",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nrapidio: fix an API misues when rio_add_net() fails\n\nrio_add_net() calls device_register() and fails when device_register()\nfails. Thus, put_device() should be used rather than kfree(). Add\n\"mport-\u003enet = NULL;\" to avoid a use after free issue."
}
],
"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 only through the RIO_DEV_ADD ioctl on the local character device /dev/rio_mportN, which requires local access to the system. RapidIO is a board-level fabric interconnect, not an IP network path, so no remote or adjacent reachability exists.\nAC:L - The attacker controls both sides of the unlocked mport-\u003enet race: two concurrent RIO_DEV_ADD ioctls both allocate a net and both register a device named \"rnet_\u003cid\u003e\" under the same parent, so the loser\u0027s device_register() fails deterministically with -EEXIST, and the sequence is freely retryable. Reclaiming the freed struct rio_net (which embeds a full struct device, landing in a common kmalloc cache) via standard heap spray is routine.\nPR:L - The driver performs no capable() or permission check on any ioctl path \u2014 access is gated purely by /dev/rio_mportN node permissions, and RapidIO deployments commonly delegate fabric enumeration to non-root userspace management daemons via group-accessible device nodes. An unprivileged user with access to the mport device node can fully drive the bug.\nUI:N - Exploitation is entirely self-driven through ioctl calls by the attacker\u0027s own process; no victim action, mount, or file open by another user is needed.\nS:U - The freed object, the corruption, and the resulting privilege gain all live within the kernel\u0027s own security authority, with no crossing of a VM, IOMMU, or sandbox boundary.\nC:H - The dangling mport-\u003enet is used as a struct device parent and list head, so after slab reclamation the attacker can leak kernel pointers written back into the sprayed object and dereference attacker-influenced sysfs/kobject pointers, yielding arbitrary kernel memory disclosure.\nI:H - list_add_tail(\u0026rdev-\u003enet_list, \u0026rdev-\u003enet-\u003edevices) inserts into a freed, attacker-reclaimed list head, giving a controllable write-what-where primitive, and device_add() increments a refcount inside the freed object \u2014 both leverageable into arbitrary kernel memory write and control-flow hijack.\nA:H - Even without full exploitation, the use-after-free on mport-\u003enet and the subsequent double free via rio_free_net()/device_unregister() on freed memory reliably produce slab corruption, oops, or kernel panic."
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-05T11:55:27.199Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/d4ec862ce80f64db923a1d942b5d11cf6fc87d36"
},
{
"url": "https://git.kernel.org/stable/c/88ddad53e4cfb6de861c6d4fb7b25427f46baed5"
},
{
"url": "https://git.kernel.org/stable/c/cdd9f58f7fe41a55fae4305ea51fc234769fd466"
},
{
"url": "https://git.kernel.org/stable/c/a5f5e520e8fbc6294020ff8afa36f684d92c6e6a"
},
{
"url": "https://git.kernel.org/stable/c/2537f01d57f08c527e40bbb5862aa6ff43344898"
},
{
"url": "https://git.kernel.org/stable/c/22e4977141dfc6d109bf29b495bf2187b4250990"
},
{
"url": "https://git.kernel.org/stable/c/f0aa4ee1cbbf7789907e5a3f6810de01c146c211"
},
{
"url": "https://git.kernel.org/stable/c/b2ef51c74b0171fde7eb69b6152d3d2f743ef269"
}
],
"title": "rapidio: fix an API misues when rio_add_net() fails",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2025-21934",
"datePublished": "2025-04-01T15:41:02.804Z",
"dateReserved": "2024-12-29T08:45:45.789Z",
"dateUpdated": "2026-08-05T11:55:27.199Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
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…
The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Loading…
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
Loading…