wid-sec-w-2026-0809
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Published 2026-03-19
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View on BSI CERT-Bund ↗
Linux Kernel: Multiple Vulnerabilities
CVSS 7.8
HIGH
Risk Summary
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.
Affected Vendors
Amazon
Google
Open Source
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