CVE-2024-36957: octeontx2-af: avoid off-by-one read from userspace

Severity: medium (CVSS 5.5 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: 2024-05-30 · updated 2026-06-17
Weakness: CWE-193

Description

In the Linux kernel, the following vulnerability has been resolved: octeontx2-af: avoid off-by-one read from userspace We try to access count + 1 byte from userspace with memdup_user(buffer, count + 1). However, the userspace only provides buffer of count bytes and only these count bytes are verified to be okay to access. To ensure the copied buffer is NUL terminated, we use memdup_user_nul instead.

Affected products

Debian Linux: 10.0
Linux kernel: from 5.10.20 before 5.10.217; from 5.11.3 before 5.15.159; from 5.16 before 6.1.91; from 6.2 before 6.6.31; from 6.7 before 6.8.10; 6.9-rc1, 6.9-rc2, 6.9-rc3, 6.9-rc4, 6.9-rc5, 6.9-rc6 — fixed in 5.10.217, 5.15.159, 6.1.91, 6.6.31, 6.8.10

How to fix

Upgrade to a fixed version: Linux kernel 5.10.217, 5.15.159, 6.1.91, 6.6.31. Check the vendor advisory for mitigations.

References

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