Vulnerability Description
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.
References
- https://git.kernel.org/stable/c/61769b9c882a964af3a6ebd9a8e43615f8713234
- https://git.kernel.org/stable/c/84473a7e1813a2da7b759ab1d098a84998c8d3f5
- https://git.kernel.org/stable/c/daeb74f5f398e847d1d42906aec6610406a34fdc
- https://git.kernel.org/stable/c/fe91c3f64a738dd97e8542ad5bdfbe5ac430edf6
FAQ
What is CVE-2026-90159?
CVE-2026-90159 is a documented vulnerability. 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() fo...
How severe is CVE-2026-90159?
CVSS scoring is not yet available for CVE-2026-90159. Check NVD for updates.
Is there a patch for CVE-2026-90159?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.