bpf: Disallow bpf_{g,s}etsockopt() in cgroup UNIX getname hooks

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-90159
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-17 17:17:09 UTC
Updated2026-09-17 17:17:09 UTC
DescriptionIn 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.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 859051dd165ec6cc915f0f2114699021144fd249 61769b9c882a964af3a6ebd9a8e43615f8713234 git Not specified
CNA Linux Linux affected 859051dd165ec6cc915f0f2114699021144fd249 fe91c3f64a738dd97e8542ad5bdfbe5ac430edf6 git Not specified
CNA Linux Linux affected 859051dd165ec6cc915f0f2114699021144fd249 daeb74f5f398e847d1d42906aec6610406a34fdc git Not specified
CNA Linux Linux affected 859051dd165ec6cc915f0f2114699021144fd249 84473a7e1813a2da7b759ab1d098a84998c8d3f5 git Not specified
CNA Linux Linux affected 6.7 Not specified
CNA Linux Linux unaffected 6.7 semver Not specified
CNA Linux Linux unaffected 6.12.110 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.52 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2.6 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3-rc1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/84473a7e1813a2da7b759ab1d098a84998c8d3f5 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/61769b9c882a964af3a6ebd9a8e43615f8713234 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/daeb74f5f398e847d1d42906aec6610406a34fdc 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/fe91c3f64a738dd97e8542ad5bdfbe5ac430edf6 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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