CVE-2026-80865
Published Sep 4, 2026
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]/
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EPSS — Exploit Prediction
0.0016
Probability of exploitation
0.06%
Percentile rank
EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.
References
Other 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
Frequently Asked Questions
What is CVE-2026-80865? +
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]/
How do I check if I'm vulnerable to CVE-2026-80865? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.