CVE-2026-23271
Description
AI Translation Available
In the Linux kernel, the following vulnerability has been resolved:
perf: Fix __perf_event_overflow() vs perf_remove_from_context() race
Make sure that __perf_event_overflow() runs with IRQs disabled for all
possible callchains. Specifically the software events can end up running
it with only preemption disabled.
This opens up a race vs perf_event_exit_event() and friends that will go
and free various things the overflow path expects to be present, like
the BPF program.
https://git.kernel.org/stable/c/3f89b61dd504c5b6711de9759e053b082f9abf12
https://git.kernel.org/stable/c/5c48fdc4b4623533d86e279f51531a7ba212eb87
https://git.kernel.org/stable/c/bb190628fe5f2a73ba762a9972ba16c5e895f73e
https://git.kernel.org/stable/c/c9bc1753b3cc41d0e01fbca7f035258b5f4db0ae