Description
In the Linux kernel, the following vulnerability has been resolved: bpf: Guard __get_user acesss with access_ok for uprobe_multi data As reported by sashiko [1] we need to use access_ok to check the user space data bounds before we use __get-user to get it. [1] https://lore.kernel.org/bpf/[email protected]/
References5
- git.kernel.org/stable/c/2c387db784293256d35fd3d438f577cc82bb823d
- git.kernel.org/stable/c/4d87a251d45b4a95eb4c0abcfab809c9f231258a
- git.kernel.org/stable/c/a9f1395028c2bbe18e57864cc355c11faff488cb
- git.kernel.org/stable/c/c6d51ad36490013ee9df94a372d3bf794bd304d1
- git.kernel.org/stable/c/ff6c5ee77dcc98381290d16af53f6262625870a6
Metrics
- CVSS 3.1
-
7.8
HIGH
Score source: CNA
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 6 · as of 11 November 2026
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.