What’s Vulnerable › Vulnerabilities

CVE-2026-74258: bpf: Guard __get_user acesss with access_ok for uprobe_multi data

• Severity: high (CVSS 7.8 v3.1)
• 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: 2026-08-15 · updated 2026-10-16

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/20260610145235.CB1441F00893@smtp.kernel.org/

Affected products

• Linux kernel: 6.6 — 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/2c387db784293256d35fd3d438f577cc82bb823d
• https://git.kernel.org/stable/c/4d87a251d45b4a95eb4c0abcfab809c9f231258a
• https://git.kernel.org/stable/c/a9f1395028c2bbe18e57864cc355c11faff488cb
• https://git.kernel.org/stable/c/c6d51ad36490013ee9df94a372d3bf794bd304d1
• https://git.kernel.org/stable/c/ff6c5ee77dcc98381290d16af53f6262625870a6

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