CVE-2026-92520

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.

EPSS

0.2% chance of exploitation in the next 30 days; higher than 10% of CVEs (scores of 2026-10-25)

Published

2026-09-17

Modified

2026-10-21

Record from

the NVD, synced 2026-10-22

References

• https://git.kernel.org/stable/c/1534c4bff3aaca19c4c9a82f93e9b81f7c983de3
• https://git.kernel.org/stable/c/23b4bcc79bab5285275912b94e98c286f281de75
• https://git.kernel.org/stable/c/7ac6e1ae41a09f1dd4baeeff1d028ae49ee01232
• https://git.kernel.org/stable/c/a6090eeb289c5fa45f7b629befac2bd3c19a6dae
• https://git.kernel.org/stable/c/e2396b8a562073787e627a5f483f1bc5c452fa6a

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