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alsa-2026:16195
Vulnerability from osv_almalinux
Published
2026-05-12 00:00
Modified
2026-05-16 06:45
Summary
Important: kernel security update
Details
The kernel packages contain the Linux kernel, the core of any Linux operating system.
Security Fix(es):
- kernel: "Dirty Frag" is a new universal Local Privilege Escalation (LPE) vulnerability in the Linux kernel (CVE-2026-43284)
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
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"details": "The kernel packages contain the Linux kernel, the core of any Linux operating system. \n\nSecurity Fix(es): \n\n * kernel: \"Dirty Frag\" is a new universal Local Privilege Escalation (LPE) vulnerability in the Linux kernel (CVE-2026-43284)\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",
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"summary": "Important: kernel security update"
}
CVE-2026-43284 (GCVE-0-2026-43284)
Vulnerability from cvelistv5 – Published: 2026-05-08 07:21 – Updated: 2026-06-30 03:17
VLAI
EPSS
Title
xfrm: esp: avoid in-place decrypt on shared skb frags
Summary
In the Linux kernel, the following vulnerability has been resolved:
xfrm: esp: avoid in-place decrypt on shared skb frags
MSG_SPLICE_PAGES can attach pages from a pipe directly to an skb. TCP
marks such skbs with SKBFL_SHARED_FRAG after skb_splice_from_iter(),
so later paths that may modify packet data can first make a private
copy. The IPv4/IPv6 datagram append paths did not set this flag when
splicing pages into UDP skbs.
That leaves an ESP-in-UDP packet made from shared pipe pages looking
like an ordinary uncloned nonlinear skb. ESP input then takes the no-COW
fast path for uncloned skbs without a frag_list and decrypts in place
over data that is not owned privately by the skb.
Mark IPv4/IPv6 datagram splice frags with SKBFL_SHARED_FRAG, matching
TCP. Also make ESP input fall back to skb_cow_data() when the flag is
present, so ESP does not decrypt externally backed frags in place.
Private nonlinear skb frags still use the existing fast path.
This intentionally does not change ESP output. In esp_output_head(),
the path that appends the ESP trailer to existing skb tailroom without
calling skb_cow_data() is not reachable for nonlinear skbs:
skb_tailroom() returns zero when skb->data_len is nonzero, while ESP
tailen is positive. Thus ESP output will either use the separate
destination-frag path or fall back to skb_cow_data().
Severity
8.8 (High)
7.8 (High)
7.8 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-123 - Write-what-where Condition
Assigner
References
56 references
Impacted products
58 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
cac2661c53f35cbe651bef9b07026a5a05ab8ce0 , < a6cb440f274a22456ef3e86b457344f1678f38f9
(git)
Affected: cac2661c53f35cbe651bef9b07026a5a05ab8ce0 , < ab8b995323e5237041472d07e5055f5f7dcdf15b (git) Affected: cac2661c53f35cbe651bef9b07026a5a05ab8ce0 , < fe785bb3a8096dffcc4048a85cd0c83337eeecad (git) Affected: cac2661c53f35cbe651bef9b07026a5a05ab8ce0 , < 5d55c7336f8032d434adcc5fab987ccc93a44aec (git) Affected: cac2661c53f35cbe651bef9b07026a5a05ab8ce0 , < 8253aab4659ca16116b522203c2a6b18dccacea7 (git) Affected: cac2661c53f35cbe651bef9b07026a5a05ab8ce0 , < 50ed1e7873100f77abad20fd31c51029bc49cd03 (git) Affected: cac2661c53f35cbe651bef9b07026a5a05ab8ce0 , < b54edf1e9a3fd3491bdcb82a21f8d21315271e0d (git) Affected: cac2661c53f35cbe651bef9b07026a5a05ab8ce0 , < 71a1d9d985d26716f74d21f18ee8cac821b06e97 (git) Affected: cac2661c53f35cbe651bef9b07026a5a05ab8ce0 , < 52646cbd00e765a6db9c3afe9535f26218276034 (git) Affected: cac2661c53f35cbe651bef9b07026a5a05ab8ce0 , < f4c50a4034e62ab75f1d5cdd191dd5f9c77fdff4 (git) |
|
| Linux | Linux |
Affected:
4.11
Unaffected: 0 , < 4.11 (semver) Unaffected: 5.10.255 , ≤ 5.10.* (semver) Unaffected: 5.15.205 , ≤ 5.15.* (semver) Unaffected: 5.15.206 , ≤ 5.15.* (semver) Unaffected: 6.1.171 , ≤ 6.1.* (semver) Unaffected: 6.1.172 , ≤ 6.1.* (semver) Unaffected: 6.6.138 , ≤ 6.6.* (semver) Unaffected: 6.12.87 , ≤ 6.12.* (semver) Unaffected: 6.18.28 , ≤ 6.18.* (semver) Unaffected: 7.0.5 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix) |
|
| Red Hat | NVIDIA for RHEL 10 |
cpe:/a:redhat:enterprise_linux_nvidia:10::el10 |
|
| Red Hat | Red Hat OpenShift Container Platform 4.12 |
cpe:/a:redhat:openshift:4.12::el8 |
|
| Red Hat | Red Hat OpenShift Container Platform 4.13 |
cpe:/a:redhat:openshift:4.13::el9 |
|
| Red Hat | Red Hat OpenShift Container Platform 4.14 |
cpe:/a:redhat:openshift:4.14::el9 |
|
| Red Hat | Red Hat OpenShift Container Platform 4.15 |
cpe:/a:redhat:openshift:4.15::el9 |
|
| Red Hat | Red Hat OpenShift Container Platform 4.16 |
cpe:/a:redhat:openshift:4.16::el9 |
|
| Red Hat | Red Hat OpenShift Container Platform 4.18 |
cpe:/a:redhat:openshift:4.18::el9 |
|
| Red Hat | Red Hat OpenShift Container Platform 4.19 |
cpe:/a:redhat:openshift:4.19::el9 |
|
| Red Hat | Red Hat OpenShift Container Platform 4.20 |
cpe:/a:redhat:openshift:4.20::el9 |
|
| Red Hat | Red Hat OpenShift Container Platform 4.21 |
cpe:/a:redhat:openshift:4.21::el9 |
|
| Red Hat | Red Hat Enterprise Linux AppStream EUS (v. 10.0) |
cpe:/o:redhat:enterprise_linux_eus:10.0 |
|
| Red Hat | Red Hat Enterprise Linux AppStream (v. 10) |
cpe:/o:redhat:enterprise_linux:10.1 cpe:/o:redhat:enterprise_linux:10.2 |
|
| Red Hat | Red Hat Enterprise Linux AppStream E4S (v.9.0) |
cpe:/a:redhat:rhel_e4s:9.0::appstream |
|
| Red Hat | Red Hat Enterprise Linux AppStream E4S (v.9.2) |
cpe:/a:redhat:rhel_e4s:9.2::appstream |
|
| Red Hat | Red Hat Enterprise Linux AppStream EUS (v.9.4) |
cpe:/a:redhat:rhel_eus:9.4::appstream |
|
| Red Hat | Red Hat Enterprise Linux AppStream EUS (v.9.6) |
cpe:/a:redhat:rhel_eus:9.6::appstream |
|
| Red Hat | Red Hat Enterprise Linux AppStream (v. 9) |
cpe:/a:redhat:enterprise_linux:9::appstream |
|
| Red Hat | Red Hat Enterprise Linux BaseOS EUS (v. 10.0) |
cpe:/o:redhat:enterprise_linux_eus:10.0 |
|
| Red Hat | Red Hat Enterprise Linux BaseOS (v. 10) |
cpe:/o:redhat:enterprise_linux:10.1 cpe:/o:redhat:enterprise_linux:10.2 |
|
| Red Hat | Red Hat Enterprise Linux BaseOS (v. 8) |
cpe:/o:redhat:enterprise_linux:8::baseos |
|
| Red Hat | Red Hat Enterprise Linux BaseOS AUS (v.8.4) |
cpe:/o:redhat:rhel_aus:8.4::baseos |
|
| Red Hat | Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4) |
cpe:/o:redhat:rhel_eus_long_life:8.4::baseos |
|
| Red Hat | Red Hat Enterprise Linux BaseOS AUS (v.8.6) |
cpe:/o:redhat:rhel_aus:8.6::baseos |
|
| Red Hat | Red Hat Enterprise Linux BaseOS E4S (v.8.6) |
cpe:/o:redhat:rhel_e4s:8.6::baseos |
|
| Red Hat | Red Hat Enterprise Linux BaseOS TUS (v.8.6) |
cpe:/o:redhat:rhel_tus:8.6::baseos |
|
| Red Hat | Red Hat Enterprise Linux BaseOS E4S (v.8.8) |
cpe:/o:redhat:rhel_e4s:8.8::baseos |
|
| Red Hat | Red Hat Enterprise Linux BaseOS TUS (v.8.8) |
cpe:/o:redhat:rhel_tus:8.8::baseos |
|
| Red Hat | Red Hat Enterprise Linux BaseOS E4S (v.9.0) |
cpe:/o:redhat:rhel_e4s:9.0::baseos |
|
| Red Hat | Red Hat Enterprise Linux BaseOS E4S (v.9.2) |
cpe:/o:redhat:rhel_e4s:9.2::baseos |
|
| Red Hat | Red Hat Enterprise Linux BaseOS EUS (v.9.4) |
cpe:/o:redhat:rhel_eus:9.4::baseos |
|
| Red Hat | Red Hat Enterprise Linux BaseOS EUS (v.9.6) |
cpe:/o:redhat:rhel_eus:9.6::baseos |
|
| Red Hat | Red Hat Enterprise Linux BaseOS (v. 9) |
cpe:/o:redhat:enterprise_linux:9::baseos |
|
| Red Hat | Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) |
cpe:/o:redhat:enterprise_linux_eus:10.0 |
|
| Red Hat | Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) |
cpe:/o:redhat:enterprise_linux:10.1 cpe:/o:redhat:enterprise_linux:10.2 |
|
| Red Hat | Red Hat Enterprise Linux CRB (v. 8) |
cpe:/a:redhat:enterprise_linux:8::crb |
|
| Red Hat | Red Hat CodeReady Linux Builder EUS (v.9.4) |
cpe:/a:redhat:rhel_eus:9.4::crb |
|
| Red Hat | Red Hat CodeReady Linux Builder EUS (v.9.6) |
cpe:/a:redhat:rhel_eus:9.6::crb |
|
| Red Hat | Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) |
cpe:/a:redhat:enterprise_linux:9::crb |
|
| Red Hat | Red Hat Enterprise Linux Real Time for NFV EUS (v. 10.0) |
cpe:/o:redhat:enterprise_linux_eus:10.0 |
|
| Red Hat | Red Hat Enterprise Linux Real Time for NFV (v. 10) |
cpe:/o:redhat:enterprise_linux:10.1 cpe:/o:redhat:enterprise_linux:10.2 |
|
| Red Hat | Red Hat Enterprise Linux NFV (v. 8) |
cpe:/a:redhat:enterprise_linux:8::nfv |
|
| Red Hat | Red Hat Enterprise Linux NFV E4S (v.9.0) |
cpe:/a:redhat:rhel_e4s:9.0::nfv |
|
| Red Hat | Red Hat Enterprise Linux Real Time for NFV E4S (v.9.2) |
cpe:/a:redhat:rhel_e4s:9.2::nfv |
|
| Red Hat | Red Hat Enterprise Linux Real Time for NFV EUS (v.9.4) |
cpe:/a:redhat:rhel_eus:9.4::nfv |
|
| Red Hat | Red Hat Enterprise Linux Real Time for NFV EUS (v.9.6) |
cpe:/a:redhat:rhel_eus:9.6::nfv |
|
| Red Hat | Red Hat Enterprise Linux Real Time for NFV (v. 9) |
cpe:/a:redhat:enterprise_linux:9::nfv |
|
| Red Hat | Red Hat Enterprise Linux Real Time EUS (v. 10.0) |
cpe:/o:redhat:enterprise_linux_eus:10.0 |
|
| Red Hat | Red Hat Enterprise Linux Real Time (v. 10) |
cpe:/o:redhat:enterprise_linux:10.1 cpe:/o:redhat:enterprise_linux:10.2 |
|
| Red Hat | Red Hat Enterprise Linux RT (v. 8) |
cpe:/a:redhat:enterprise_linux:8::realtime |
|
| Red Hat | Red Hat Enterprise Linux Real Time E4S (v.9.0) |
cpe:/a:redhat:rhel_e4s:9.0::realtime |
|
| Red Hat | Red Hat Enterprise Linux Real Time E4S (v.9.2) |
cpe:/a:redhat:rhel_e4s:9.2::realtime |
|
| Red Hat | Red Hat Enterprise Linux Real Time EUS (v.9.4) |
cpe:/a:redhat:rhel_eus:9.4::realtime |
|
| Red Hat | Red Hat Enterprise Linux Real Time EUS (v.9.6) |
cpe:/a:redhat:rhel_eus:9.6::realtime |
|
| Red Hat | Red Hat Enterprise Linux Real Time (v. 9) |
cpe:/a:redhat:enterprise_linux:9::realtime |
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6 |
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7 |
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"lang": "en",
"value": "RHSA-2026:16161: Red Hat OpenShift Container Platform 4.19"
},
{
"lang": "en",
"value": "RHSA-2026:16157: Red Hat OpenShift Container Platform 4.20"
},
{
"lang": "en",
"value": "RHSA-2026:16155: Red Hat OpenShift Container Platform 4.21"
},
{
"lang": "en",
"value": "RHSA-2026:16314: Red Hat Enterprise Linux AppStream EUS (v. 10.0), Red Hat Enterprise Linux BaseOS EUS (v. 10.0), Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0), Red Hat Enterprise Linux Real Time EUS (v. 10.0), Red Hat Enterprise Linux Real Time for NFV EUS (v. 10.0)"
},
{
"lang": "en",
"value": "RHSA-2026:16062: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux BaseOS (v. 10), Red Hat Enterprise Linux CodeReady Linux Builder (v. 10), Red Hat Enterprise Linux Real Time (v. 10), Red Hat Enterprise Linux Real Time for NFV (v. 10)"
},
{
"lang": "en",
"value": "RHSA-2026:19569: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux BaseOS (v. 10), Red Hat Enterprise Linux CodeReady Linux Builder (v. 10), Red Hat Enterprise Linux Real Time (v. 10), Red Hat Enterprise Linux Real Time for NFV (v. 10)"
},
{
"lang": "en",
"value": "RHSA-2026:19074: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux BaseOS (v. 10), Red Hat Enterprise Linux CodeReady Linux Builder (v. 10), Red Hat Enterprise Linux Real Time (v. 10), Red Hat Enterprise Linux Real Time for NFV (v. 10)"
},
{
"lang": "en",
"value": "RHSA-2026:16202: Red Hat Enterprise Linux AppStream E4S (v.9.0), Red Hat Enterprise Linux BaseOS E4S (v.9.0)"
},
{
"lang": "en",
"value": "RHSA-2026:16328: Red Hat Enterprise Linux AppStream E4S (v.9.2), Red Hat Enterprise Linux BaseOS E4S (v.9.2)"
},
{
"lang": "en",
"value": "RHSA-2026:16100: Red Hat CodeReady Linux Builder EUS (v.9.4), Red Hat Enterprise Linux AppStream EUS (v.9.4), Red Hat Enterprise Linux BaseOS EUS (v.9.4), Red Hat Enterprise Linux Real Time EUS (v.9.4), Red Hat Enterprise Linux Real Time for NFV EUS (v.9.4)"
},
{
"lang": "en",
"value": "RHSA-2026:16312: Red Hat CodeReady Linux Builder EUS (v.9.6), Red Hat Enterprise Linux AppStream EUS (v.9.6), Red Hat Enterprise Linux BaseOS EUS (v.9.6), Red Hat Enterprise Linux Real Time EUS (v.9.6), Red Hat Enterprise Linux Real Time for NFV EUS (v.9.6)"
},
{
"lang": "en",
"value": "RHSA-2026:16206: Red Hat Enterprise Linux AppStream (v. 9), Red Hat Enterprise Linux BaseOS (v. 9), Red Hat Enterprise Linux CodeReady Linux Builder (v. 9), Red Hat Enterprise Linux Real Time (v. 9), Red Hat Enterprise Linux Real Time for NFV (v. 9)"
},
{
"lang": "en",
"value": "RHSA-2026:19568: Red Hat Enterprise Linux AppStream (v. 9), Red Hat Enterprise Linux BaseOS (v. 9), Red Hat Enterprise Linux CodeReady Linux Builder (v. 9), Red Hat Enterprise Linux Real Time (v. 9), Red Hat Enterprise Linux Real Time for NFV (v. 9)"
},
{
"lang": "en",
"value": "RHSA-2026:19225: Red Hat Enterprise Linux AppStream (v. 9), Red Hat Enterprise Linux BaseOS (v. 9), Red Hat Enterprise Linux CodeReady Linux Builder (v. 9), Red Hat Enterprise Linux Real Time (v. 9), Red Hat Enterprise Linux Real Time for NFV (v. 9)"
},
{
"lang": "en",
"value": "RHSA-2026:16195: Red Hat Enterprise Linux BaseOS (v. 8), Red Hat Enterprise Linux CRB (v. 8)"
},
{
"lang": "en",
"value": "RHSA-2026:19574: Red Hat Enterprise Linux BaseOS (v. 8)"
},
{
"lang": "en",
"value": "RHSA-2026:16201: Red Hat Enterprise Linux BaseOS AUS (v.8.4), Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)"
},
{
"lang": "en",
"value": "RHSA-2026:16204: Red Hat Enterprise Linux BaseOS AUS (v.8.6), Red Hat Enterprise Linux BaseOS E4S (v.8.6), Red Hat Enterprise Linux BaseOS TUS (v.8.6)"
},
{
"lang": "en",
"value": "RHSA-2026:19564: Red Hat Enterprise Linux BaseOS E4S (v.8.6)"
},
{
"lang": "en",
"value": "RHSA-2026:16061: Red Hat Enterprise Linux BaseOS E4S (v.8.8), Red Hat Enterprise Linux BaseOS TUS (v.8.8)"
},
{
"lang": "en",
"value": "RHSA-2026:19572: Red Hat Enterprise Linux BaseOS E4S (v.8.8)"
},
{
"lang": "en",
"value": "RHSA-2026:19575: Red Hat Enterprise Linux BaseOS E4S (v.9.0)"
},
{
"lang": "en",
"value": "RHSA-2026:19573: Red Hat Enterprise Linux BaseOS E4S (v.9.2)"
},
{
"lang": "en",
"value": "RHSA-2026:19577: Red Hat Enterprise Linux BaseOS EUS (v.9.4)"
},
{
"lang": "en",
"value": "RHSA-2026:18025: Red Hat Enterprise Linux BaseOS EUS (v.9.6)"
},
{
"lang": "en",
"value": "RHSA-2026:16196: Red Hat Enterprise Linux NFV (v. 8), Red Hat Enterprise Linux RT (v. 8)"
},
{
"lang": "en",
"value": "RHSA-2026:16203: Red Hat Enterprise Linux NFV E4S (v.9.0), Red Hat Enterprise Linux Real Time E4S (v.9.0)"
},
{
"lang": "en",
"value": "RHSA-2026:16254: Red Hat Enterprise Linux Real Time E4S (v.9.2), Red Hat Enterprise Linux Real Time for NFV E4S (v.9.2)"
}
],
"timeline": [
{
"lang": "en",
"time": "2026-05-07T15:56:04.044Z",
"value": "Reported to Red Hat."
},
{
"lang": "en",
"time": "2026-05-07T00:00:00.000Z",
"value": "Made public."
}
],
"title": "kernel: \"Dirty Frag\" ESP XFRM variant is a new universal Local Privilege Escalation (LPE) vulnerability in the Linux kernel",
"workarounds": [
{
"lang": "en",
"value": "See the security bulletin for a detailed mitigation procedure."
}
],
"x_adpType": "supplier",
"x_generator": {
"engine": "sadp-cli 1.0.0"
}
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"net/ipv4/esp4.c",
"net/ipv4/ip_output.c",
"net/ipv6/esp6.c",
"net/ipv6/ip6_output.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "a6cb440f274a22456ef3e86b457344f1678f38f9",
"status": "affected",
"version": "cac2661c53f35cbe651bef9b07026a5a05ab8ce0",
"versionType": "git"
},
{
"lessThan": "ab8b995323e5237041472d07e5055f5f7dcdf15b",
"status": "affected",
"version": "cac2661c53f35cbe651bef9b07026a5a05ab8ce0",
"versionType": "git"
},
{
"lessThan": "fe785bb3a8096dffcc4048a85cd0c83337eeecad",
"status": "affected",
"version": "cac2661c53f35cbe651bef9b07026a5a05ab8ce0",
"versionType": "git"
},
{
"lessThan": "5d55c7336f8032d434adcc5fab987ccc93a44aec",
"status": "affected",
"version": "cac2661c53f35cbe651bef9b07026a5a05ab8ce0",
"versionType": "git"
},
{
"lessThan": "8253aab4659ca16116b522203c2a6b18dccacea7",
"status": "affected",
"version": "cac2661c53f35cbe651bef9b07026a5a05ab8ce0",
"versionType": "git"
},
{
"lessThan": "50ed1e7873100f77abad20fd31c51029bc49cd03",
"status": "affected",
"version": "cac2661c53f35cbe651bef9b07026a5a05ab8ce0",
"versionType": "git"
},
{
"lessThan": "b54edf1e9a3fd3491bdcb82a21f8d21315271e0d",
"status": "affected",
"version": "cac2661c53f35cbe651bef9b07026a5a05ab8ce0",
"versionType": "git"
},
{
"lessThan": "71a1d9d985d26716f74d21f18ee8cac821b06e97",
"status": "affected",
"version": "cac2661c53f35cbe651bef9b07026a5a05ab8ce0",
"versionType": "git"
},
{
"lessThan": "52646cbd00e765a6db9c3afe9535f26218276034",
"status": "affected",
"version": "cac2661c53f35cbe651bef9b07026a5a05ab8ce0",
"versionType": "git"
},
{
"lessThan": "f4c50a4034e62ab75f1d5cdd191dd5f9c77fdff4",
"status": "affected",
"version": "cac2661c53f35cbe651bef9b07026a5a05ab8ce0",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"net/ipv4/esp4.c",
"net/ipv4/ip_output.c",
"net/ipv6/esp6.c",
"net/ipv6/ip6_output.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "4.11"
},
{
"lessThan": "4.11",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.255",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.205",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.206",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.171",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.172",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.138",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.87",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.28",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.0.*",
"status": "unaffected",
"version": "7.0.5",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.1",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.10.255",
"versionStartIncluding": "4.11",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.15.205",
"versionStartIncluding": "4.11",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.15.206",
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"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.171",
"versionStartIncluding": "4.11",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.172",
"versionStartIncluding": "4.11",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.138",
"versionStartIncluding": "4.11",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.18.28",
"versionStartIncluding": "4.11",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.0.5",
"versionStartIncluding": "4.11",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.1",
"versionStartIncluding": "4.11",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxfrm: esp: avoid in-place decrypt on shared skb frags\n\nMSG_SPLICE_PAGES can attach pages from a pipe directly to an skb. TCP\nmarks such skbs with SKBFL_SHARED_FRAG after skb_splice_from_iter(),\nso later paths that may modify packet data can first make a private\ncopy. The IPv4/IPv6 datagram append paths did not set this flag when\nsplicing pages into UDP skbs.\n\nThat leaves an ESP-in-UDP packet made from shared pipe pages looking\nlike an ordinary uncloned nonlinear skb. ESP input then takes the no-COW\nfast path for uncloned skbs without a frag_list and decrypts in place\nover data that is not owned privately by the skb.\n\nMark IPv4/IPv6 datagram splice frags with SKBFL_SHARED_FRAG, matching\nTCP. Also make ESP input fall back to skb_cow_data() when the flag is\npresent, so ESP does not decrypt externally backed frags in place.\nPrivate nonlinear skb frags still use the existing fast path.\n\nThis intentionally does not change ESP output. In esp_output_head(),\nthe path that appends the ESP trailer to existing skb tailroom without\ncalling skb_cow_data() is not reachable for nonlinear skbs:\nskb_tailroom() returns zero when skb-\u003edata_len is nonzero, while ESP\ntailen is positive. Thus ESP output will either use the separate\ndestination-frag path or fall back to skb_cow_data()."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 8.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
"version": "3.1"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-06-14T17:44:56.673Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/a6cb440f274a22456ef3e86b457344f1678f38f9"
},
{
"url": "https://git.kernel.org/stable/c/ab8b995323e5237041472d07e5055f5f7dcdf15b"
},
{
"url": "https://git.kernel.org/stable/c/fe785bb3a8096dffcc4048a85cd0c83337eeecad"
},
{
"url": "https://git.kernel.org/stable/c/5d55c7336f8032d434adcc5fab987ccc93a44aec"
},
{
"url": "https://git.kernel.org/stable/c/8253aab4659ca16116b522203c2a6b18dccacea7"
},
{
"url": "https://git.kernel.org/stable/c/50ed1e7873100f77abad20fd31c51029bc49cd03"
},
{
"url": "https://git.kernel.org/stable/c/b54edf1e9a3fd3491bdcb82a21f8d21315271e0d"
},
{
"url": "https://git.kernel.org/stable/c/71a1d9d985d26716f74d21f18ee8cac821b06e97"
},
{
"url": "https://git.kernel.org/stable/c/52646cbd00e765a6db9c3afe9535f26218276034"
},
{
"url": "https://git.kernel.org/stable/c/f4c50a4034e62ab75f1d5cdd191dd5f9c77fdff4"
}
],
"title": "xfrm: esp: avoid in-place decrypt on shared skb frags",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-43284",
"datePublished": "2026-05-08T07:21:47.524Z",
"dateReserved": "2026-05-01T14:12:55.998Z",
"dateUpdated": "2026-06-30T03:17:08.467Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Trend slope:
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(linear fit over daily sighting counts)
Show additional events:
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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.
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