Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: bpf: Add missing access_ok call to copy_user_syms As reported by sashiko we use __get_user without prior access_ok call on the user space pointer. Adding the missing call for the whole pointer array. Plus removing the err check in the error path, because it's not needed and also we can return -ENOMEM directly from the first kvmalloc_array fail path. [1] https://lore.kernel.org/bpf/[email protected]/
References
- https://git.kernel.org/stable/c/0b6252afcd1965f77c6a6f8a802a2e1381822b98
- https://git.kernel.org/stable/c/128391b57e0977c35243672a6f970073651f3831
- https://git.kernel.org/stable/c/28ce7bcf8a29aa395b60764df4c97be745de89d0
- https://git.kernel.org/stable/c/8b719cef5ac30ab83ce5693c5faf10e4944874af
- https://git.kernel.org/stable/c/a67f7f9647cb243b3be32163e88e5bc76e3d51e9
- https://git.kernel.org/stable/c/d5dc200c3a3f217de072af269dd90adddf90e48d
FAQ
What is CVE-2026-80865?
CVE-2026-80865 is a documented vulnerability. In the Linux kernel, the following vulnerability has been resolved: bpf: Add missing access_ok call to copy_user_syms As reported by sashiko we use __get_user without prior access_ok call on the use...
How severe is CVE-2026-80865?
CVSS scoring is not yet available for CVE-2026-80865. Check NVD for updates.
Is there a patch for CVE-2026-80865?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.