Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: bpf: Reject exclusive maps for bpf_map_elem iterators Exclusive maps (aka excl_prog_hash) are meant to be reachable only from the single program whose hash matches. This is enforced by check_map_prog_compatibility() when the map is referenced from a program such as signed BPF loaders. A bpf_map_elem iterator, however, binds its target map at attach time in bpf_iter_attach_map() instead of referencing it from the program, so the exclusivity check is never reached. On top of that, the iterator exposes the map value as a writable buffer.
References
- https://git.kernel.org/stable/c/3c56ee343f9412d81918635c3e25e22a5dd6d87e
- https://git.kernel.org/stable/c/5cf2c85b1231218a3e3e9f188afb4fe2e17903d5
- https://git.kernel.org/stable/c/c3da741d5b2119c61c4498bc936f0fc1dbc3c79b
FAQ
What is CVE-2026-74360?
CVE-2026-74360 is a documented vulnerability. In the Linux kernel, the following vulnerability has been resolved: bpf: Reject exclusive maps for bpf_map_elem iterators Exclusive maps (aka excl_prog_hash) are meant to be reachable only from the ...
How severe is CVE-2026-74360?
CVSS scoring is not yet available for CVE-2026-74360. Check NVD for updates.
Is there a patch for CVE-2026-74360?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.