Bug 2426132 (CVE-2023-54202)

Summary: CVE-2023-54202 kernel: drm/i915: fix race condition UAF in i915_perf_add_config_ioctl
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Version: unspecifiedKeywords: Security
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OS: Linux   
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Description OSIDB Bzimport 2025-12-30 13:11:14 UTC 
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)
Comment 1 Alexander B 2025-12-31 06:53:32 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025123031-CVE-2023-54202-1932@gregkh/T