What’s Vulnerable › Vulnerabilities

CVE-2024-43867: drm/nouveau: prime: fix refcount underflow

• 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: 2024-08-21 · updated 2026-06-17
• Weakness: CWE-191

Description

In the Linux kernel, the following vulnerability has been resolved: drm/nouveau: prime: fix refcount underflow Calling nouveau_bo_ref() on a nouveau_bo without initializing it (and hence the backing ttm_bo) leads to a refcount underflow. Instead of calling nouveau_bo_ref() in the unwind path of drm_gem_object_init(), clean things up manually. (cherry picked from commit 1b93f3e89d03cfc576636e195466a0d728ad8de5)

Affected products

• Linux kernel: from 3.9 before 5.4.282; from 5.5 before 5.10.224; from 5.11 before 5.15.165; from 5.16 before 6.1.104; from 6.2 before 6.6.45; from 6.7 before 6.10.4 — fixed in 5.10.224, 5.15.165, 5.4.282, 6.1.104, 6.10.4, 6.6.45

How to fix

Upgrade to a fixed version: Linux kernel 5.10.224, 5.15.165, 5.4.282, 6.1.104. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/16998763c62bb465ebc409d0373b9cdcef1a61a6
• https://git.kernel.org/stable/c/2a1b327d57a8ac080977633a18999f032d7e9e3f
• https://git.kernel.org/stable/c/3bcb8bba72ce89667fa863054956267c450c47ef
• https://git.kernel.org/stable/c/906372e753c5027a1dc88743843b6aa2ad1aaecf
• https://git.kernel.org/stable/c/a9bf3efc33f1fbf88787a277f7349459283c9b95
• https://git.kernel.org/stable/c/ebebba4d357b6c67f96776a48ddbaf0060fa4c10
• https://git.kernel.org/stable/c/f23cd66933fe76b84d8e282e5606b4d99068c320
• https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html
• https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html

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