CVE-2026-90159
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.
How to fix
- Linux Linux61769b9c882a964af3a6ebd9a8e43615f8713234, fe91c3f64a738dd97e8542ad5bdfbe5ac430edf6, daeb74f5f398e847d1d42906aec6610406a34fdc, 84473a7e1813a2da7b759ab1d098a84998c8d3f5 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 859051dd165ec6cc915f0f2114699021144fd249 ≤ v < 61769b9c882a964af3a6ebd9a8e43615f8713234, 859051dd165ec6cc915f0f2114699021144fd249 ≤ v < fe91c3f64a738dd97e8542ad5bdfbe5ac430edf6, 859051dd165ec6cc915f0f2114699021144fd249 ≤ v < daeb74f5f398e847d1d42906aec6610406a34fdc, 859051dd165ec6cc915f0f2114699021144fd249 ≤ v < 84473a7e1813a2da7b759ab1d098a84998c8d3f5, 6.7 | 61769b9c882a964af3a6ebd9a8e43615f8713234, fe91c3f64a738dd97e8542ad5bdfbe5ac430edf6, daeb74f5f398e847d1d42906aec6610406a34fdc, 84473a7e1813a2da7b759ab1d098a84998c8d3f5 |
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