CVE-2026-90159 (GCVE-0-2026-90159)
Vulnerability from cvelistv5 – Published: 2026-09-17 16:06 – Updated: 2026-10-19 08:58
VLAI
EPSS
VEX
Title
bpf: Disallow bpf_{g,s}etsockopt() in cgroup UNIX getname hooks
Summary
In the Linux kernel, the following vulnerability has been resolved:
bpf: Disallow bpf_{g,s}etsockopt() in cgroup UNIX getname hooks
_bpf_setsockopt() and _bpf_getsockopt() call sock_owned_by_me() for
full sockets, so these helpers expect the socket lock to be held.
BPF_CGROUP_UNIX_GETPEERNAME and BPF_CGROUP_UNIX_GETSOCKNAME run BPF
programs without acquiring the socket lock. A program attached to
either hook can therefore trigger the sock_owned_by_me() warning by
calling bpf_setsockopt() or bpf_getsockopt().
Disallow bpf_setsockopt() and bpf_getsockopt() for CGROUP_UNIX_GETPEERNAME
and CGROUP_UNIX_GETSOCKNAME.
Severity
No CVSS data available.
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
859051dd165ec6cc915f0f2114699021144fd249 , < 61769b9c882a964af3a6ebd9a8e43615f8713234
(git)
Affected: 859051dd165ec6cc915f0f2114699021144fd249 , < fe91c3f64a738dd97e8542ad5bdfbe5ac430edf6 (git) Affected: 859051dd165ec6cc915f0f2114699021144fd249 , < daeb74f5f398e847d1d42906aec6610406a34fdc (git) Affected: 859051dd165ec6cc915f0f2114699021144fd249 , < 84473a7e1813a2da7b759ab1d098a84998c8d3f5 (git) |
guessed | |
| Linux | Linux |
Affected:
6.7
Unaffected: 0 , < 6.7 (semver) Unaffected: 6.12.110 , ≤ 6.12.* (semver) Unaffected: 6.18.52 , ≤ 6.18.* (semver) Unaffected: 7.2.6 , ≤ 7.2.* (semver) Unaffected: 7.3 , ≤ * (original_commit_for_fix) |
guessed |
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"net/core/filter.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
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"status": "affected",
"version": "859051dd165ec6cc915f0f2114699021144fd249",
"versionType": "git"
},
{
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"status": "affected",
"version": "859051dd165ec6cc915f0f2114699021144fd249",
"versionType": "git"
},
{
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"status": "affected",
"version": "859051dd165ec6cc915f0f2114699021144fd249",
"versionType": "git"
},
{
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{
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"programFiles": [
"net/core/filter.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "6.7"
},
{
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"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
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"status": "unaffected",
"version": "6.12.110",
"versionType": "semver"
},
{
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"status": "unaffected",
"version": "6.18.52",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.2.*",
"status": "unaffected",
"version": "7.2.6",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.110",
"versionStartIncluding": "6.7",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.18.52",
"versionStartIncluding": "6.7",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.2.6",
"versionStartIncluding": "6.7",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.3",
"versionStartIncluding": "6.7",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Disallow bpf_{g,s}etsockopt() in cgroup UNIX getname hooks\n\n_bpf_setsockopt() and _bpf_getsockopt() call sock_owned_by_me() for\nfull sockets, so these helpers expect the socket lock to be held.\n\nBPF_CGROUP_UNIX_GETPEERNAME and BPF_CGROUP_UNIX_GETSOCKNAME run BPF\nprograms without acquiring the socket lock. A program attached to\neither hook can therefore trigger the sock_owned_by_me() warning by\ncalling bpf_setsockopt() or bpf_getsockopt().\n\nDisallow bpf_setsockopt() and bpf_getsockopt() for CGROUP_UNIX_GETPEERNAME\nand CGROUP_UNIX_GETSOCKNAME."
}
],
"providerMetadata": {
"dateUpdated": "2026-10-19T08:58:57.864Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/61769b9c882a964af3a6ebd9a8e43615f8713234"
},
{
"url": "https://git.kernel.org/stable/c/fe91c3f64a738dd97e8542ad5bdfbe5ac430edf6"
},
{
"url": "https://git.kernel.org/stable/c/daeb74f5f398e847d1d42906aec6610406a34fdc"
},
{
"url": "https://git.kernel.org/stable/c/84473a7e1813a2da7b759ab1d098a84998c8d3f5"
}
],
"title": "bpf: Disallow bpf_{g,s}etsockopt() in cgroup UNIX getname hooks",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-90159",
"datePublished": "2026-09-17T16:06:51.151Z",
"dateReserved": "2026-09-11T19:38:34.790Z",
"dateUpdated": "2026-10-19T08:58:57.864Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-90159",
"date": "2026-11-09",
"epss": "0.002",
"percentile": "0.09921"
},
"microsoft_vex": {
"current_release_date": "2026-10-21T18:33:10.000Z",
"cve": "CVE-2026-90159",
"id": "msrc_CVE-2026-90159",
"initial_release_date": "2026-10-20T22:21:41.000Z",
"product_status:under_investigation": "1",
"source": "Microsoft CSAF VEX",
"status": "final",
"title": "bpf: Disallow bpf_{g,s}etsockopt() in cgroup UNIX getname hooks",
"url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-90159.json",
"version": "2"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"net/core/filter.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "61769b9c882a964af3a6ebd9a8e43615f8713234",
"status": "affected",
"version": "859051dd165ec6cc915f0f2114699021144fd249",
"versionType": "git"
},
{
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"status": "affected",
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"versionType": "git"
},
{
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"status": "affected",
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"versionType": "git"
},
{
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"status": "affected",
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"versionType": "git"
}
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},
{
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"product": "Linux",
"programFiles": [
"net/core/filter.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "6.7"
},
{
"lessThan": "6.7",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.110",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.52",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.2.*",
"status": "unaffected",
"version": "7.2.6",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix"
}
]
}
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Disallow bpf_{g,s}etsockopt() in cgroup UNIX getname hooks\n\n_bpf_setsockopt() and _bpf_getsockopt() call sock_owned_by_me() for\nfull sockets, so these helpers expect the socket lock to be held.\n\nBPF_CGROUP_UNIX_GETPEERNAME and BPF_CGROUP_UNIX_GETSOCKNAME run BPF\nprograms without acquiring the socket lock. A program attached to\neither hook can therefore trigger the sock_owned_by_me() warning by\ncalling bpf_setsockopt() or bpf_getsockopt().\n\nDisallow bpf_setsockopt() and bpf_getsockopt() for CGROUP_UNIX_GETPEERNAME\nand CGROUP_UNIX_GETSOCKNAME."
}
],
"id": "CVE-2026-90159",
"lastModified": "2026-10-19T09:19:05.900",
"metrics": {},
"published": "2026-09-17T17:17:09.080",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/61769b9c882a964af3a6ebd9a8e43615f8713234"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/84473a7e1813a2da7b759ab1d098a84998c8d3f5"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/daeb74f5f398e847d1d42906aec6610406a34fdc"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/fe91c3f64a738dd97e8542ad5bdfbe5ac430edf6"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Received"
}
},
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-11-06T01:31:52+00:00",
"cve": "CVE-2026-90159",
"id": "CVE-2026-90159",
"initial_release_date": "2026-09-17T00:00:00+00:00",
"product_status:known_affected": "15",
"product_status:known_not_affected": "188",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: bpf: Disallow bpf_{g,s}etsockopt() in cgroup UNIX getname hooks",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-90159.json",
"version": "3"
}
}
}
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Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
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Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
How durations are calculated
Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.
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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
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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.
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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.
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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.