CVE-2023-54202
Unknown Unknown - Not Provided
Use-After-Free in Linux Kernel i915_perf ioctl Race Condition

Publication date: 2025-12-30

Last updated on: 2025-12-30

Assigner: kernel.org

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)
CVSS Scores
EPSS Scores
Probability:
Percentile:
Meta Information
Published
2025-12-30
Last Modified
2025-12-30
Generated
2026-06-16
AI Q&A
2025-12-30
EPSS Evaluated
2026-06-14
NVD
CVE-2023-54202
EUVD
EUVD-2023-60439
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *
Helpful Resources
Exploitability
CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-UNKNOWN
Attack-Flow Graph
AI Quick Actions
Instant insights powered by AI
Executive Summary

This vulnerability is a race condition use-after-free (UAF) in the Linux kernel's drm/i915 driver, specifically in the i915_perf_add_config_ioctl function. Userspace can guess an id value and attempt to race the creation of an oa_config object with its removal. If the object is dereferenced after unlocking the metrics_lock, it can lead to use-after-free, causing potential instability or exploitation. The fix involves ensuring the metrics_lock is not unlocked until after the object is fully dereferenced.

Impact Analysis

This vulnerability can lead to use-after-free conditions in the Linux kernel, which may cause system instability, crashes, or potentially allow an attacker to execute arbitrary code or escalate privileges by exploiting the race condition in the drm/i915 driver.

Mitigation Strategies

To mitigate this vulnerability, update the Linux kernel to a version that includes the fix for the race condition in drm/i915 (specifically the fix for use-after-free in i915_perf_add_config_ioctl). Avoid using vulnerable kernel versions and apply vendor-provided patches as soon as they are available.

Chat Assistant
Ask questions about this CVE
Hi! I’m here to help you understand CVE-2023-54202. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70
EPSS Chart