What’s Vulnerable › Vulnerabilities

CVE-2026-80865: bpf: Add missing access_ok call to copy_user_syms

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-04 · updated 2026-09-04

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/20260611115503.AC16D1F00893@smtp.kernel.org/

Affected products

• Linux kernel: 5.19 — fixed in 7.2

How to fix

Upgrade to a fixed version: Linux kernel 7.2. Check the vendor advisory for mitigations.

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

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