CVE-2026-92520: Linux

EPSS: 0.2% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: bpf: Zero queue and stack outputs on lock failure Queue and stack pop/peek helpers accept an uninitialized output buffer because the verifier expects the helper to initialize it. The empty-map error path clears the buffer, but a failed lock acquisition returns -EBUSY without writing it. Clear the output before returning -EBUSY so BPF programs cannot observe uninitialized stack contents after a failed helper call.

Affected products

• Linux Linux: from 5.4.258, before 5.5 (fixed in 5.5); from 5.10.198, before 5.11 (fixed in 5.11); from 5.15.134, before 5.16 (fixed in 5.16); from 6.1.56, before 6.2 (fixed in 6.2); from 6.5.6, before 6.6 (fixed in 6.6); from 6.6, before 6.18.52 (fixed in 6.18.52); …

Published 2026-09-17. Last modified 2026-09-17.