CVE-2026-92520
bpf: Zero queue and stack outputs on lock failure
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Sep 17, 2026 |
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Affected Versions
Linux / Linux
a34a9f1a19afe9c60ca0ea61dfeee63a1c2baac8 < 1534c4bff3aaca19c4c9a82f93e9b81f7c983de3 a34a9f1a19afe9c60ca0ea61dfeee63a1c2baac8 < e2396b8a562073787e627a5f483f1bc5c452fa6a a34a9f1a19afe9c60ca0ea61dfeee63a1c2baac8 < 7ac6e1ae41a09f1dd4baeeff1d028ae49ee01232 40e34ea01748e5b8afdd40a172868be1e1ab0ede 388c9d3eefaea99828ee5000c693128a5b41ee7c acabf5df49aa3a4f9c96200102d893351b511a88 e388671635acf470f0986d874389148fd234620b 232f0ba4d69263af5912e279fcc32fef2882b1dc 5.4.258 < 5.5 5.10.198 < 5.11 5.15.134 < 5.16 6.1.56 < 6.2 6.5.6 < 6.6
Linux / Linux
6.6