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CVE-2026-74258

bpf: Guard __get_user acesss with access_ok for uprobe_multi data

HIGH
7.8
CVSS Score
Published: August 15, 2026 at 05:57 AM UTC
Updated: October 16, 2026 at 07:17 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH7.8
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

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]/

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
90%
6.689ae89f53d201143560f1e9ed4bfa62eee34f88e
Vendor states this is fixed in 2c387db784293256d35fd3d438f577cc82bb823d (fixed)
Vendor states this is fixed in 4d87a251d45b4a95eb4c0abcfab809c9f231258a (fixed)
Vendor states this is fixed in a9f1395028c2bbe18e57864cc355c11faff488cb (fixed)
Vendor states this is fixed in c6d51ad36490013ee9df94a372d3bf794bd304d1 (fixed)
Vendor states this is fixed in ff6c5ee77dcc98381290d16af53f6262625870a6 (fixed)
Vendor states this is fixed in 6.12.111 (unaffected)
Vendor states this is fixed in 6.18.53 (unaffected)
Vendor states this is fixed in 6.6 (unaffected)
Vendor states this is fixed in 6.6.158 (unaffected)
Vendor states this is fixed in 7.1.5 (unaffected)
Vendor states this is fixed in 7.2 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (5)

Source: cverecord
https://git.kernel.org/stable/c/c6d51ad36490013ee9df94a372d3bf794bd304d1
Source: cverecord
https://git.kernel.org/stable/c/4d87a251d45b4a95eb4c0abcfab809c9f231258a
Source: cverecord
https://git.kernel.org/stable/c/2c387db784293256d35fd3d438f577cc82bb823d
Source: cverecord
https://git.kernel.org/stable/c/a9f1395028c2bbe18e57864cc355c11faff488cb
Source: cverecord
https://git.kernel.org/stable/c/ff6c5ee77dcc98381290d16af53f6262625870a6

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.8HIGHLinux
Vector?

Quick Info

StatusRECEIVED

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