Vulnerability-Lookup

GHSA-RCRW-XVQQ-C49M

Vulnerability from github – Published: 2026-09-17 18:31 – Updated: 2026-09-17 18:31

Details

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.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-90159"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-17T17:17:09Z",
    "severity": null
  },
  "details": "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": "GHSA-rcrw-xvqq-c49m",
  "modified": "2026-09-17T18:31:53Z",
  "published": "2026-09-17T18:31:53Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90159"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/61769b9c882a964af3a6ebd9a8e43615f8713234"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/84473a7e1813a2da7b759ab1d098a84998c8d3f5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/daeb74f5f398e847d1d42906aec6610406a34fdc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fe91c3f64a738dd97e8542ad5bdfbe5ac430edf6"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-90159 (GCVE-0-2026-90159)

Vulnerability from cvelistv5 – Published: 2026-09-17 16:06 – Updated: 2026-09-17 16:06

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

Linux mitre root

References

4 references

URL	Tags
https://git.kernel.org/stable/c/61769b9c882a964af…
https://git.kernel.org/stable/c/fe91c3f64a738dd97…
https://git.kernel.org/stable/c/daeb74f5f398e847d…
https://git.kernel.org/stable/c/84473a7e1813a2da7…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 859051dd165ec6cc915f0f2114699021144fd249 , < 61769b9c882a964af3a6ebd9a8e43615f8713234 (git) Affected: 859051dd165ec6cc915f0f2114699021144fd249 , < fe91c3f64a738dd97e8542ad5bdfbe5ac430edf6 (git) Affected: 859051dd165ec6cc915f0f2114699021144fd249 , < daeb74f5f398e847d1d42906aec6610406a34fdc (git) Affected: 859051dd165ec6cc915f0f2114699021144fd249 , < 84473a7e1813a2da7b759ab1d098a84998c8d3f5 (git)
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-rc1 , ≤ * (original_commit_for_fix)

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        {
          "defaultStatus": "unaffected",
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          "programFiles": [
            "net/core/filter.c"
          ],
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          "vendor": "Linux",
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          "versions": [
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              "version": "6.7"
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              "status": "unaffected",
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              "versionType": "semver"
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                },
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          "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."
        }
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    "datePublished": "2026-09-17T16:06:51.151Z",
    "dateReserved": "2026-09-11T19:38:34.790Z",
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

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Confirmed: The vulnerability has been validated from an analyst's perspective.
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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.

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.
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GHSA-RCRW-XVQQ-C49M

CVE-2026-90159 (GCVE-0-2026-90159)

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