{"id":"CVE-2026-92520","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Zero queue and stack outputs on lock failure\n\nQueue and stack pop/peek helpers accept an uninitialized output buffer\nbecause the verifier expects the helper to ini…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Zero queue and stack outputs on lock failure\n\nQueue and stack pop/peek helpers accept an uninitialized output buffer\nbecause the verifier expects the helper to ini…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= a34a9f1a19afe9c60ca0ea61dfeee63a1c2baac8 < 1534c4bff3aaca19c4c9a82f93e9b81f7c983de3","Linux >= a34a9f1a19afe9c60ca0ea61dfeee63a1c2baac8 < e2396b8a562073787e627a5f483f1bc5c452fa6a","Linux >= a34a9f1a19afe9c60ca0ea61dfeee63a1c2baac8 < 7ac6e1ae41a09f1dd4baeeff1d028ae49ee01232","Linux 40e34ea01748e5b8afdd40a172868be1e1ab0ede","Linux 388c9d3eefaea99828ee5000c693128a5b41ee7c","Linux acabf5df49aa3a4f9c96200102d893351b511a88","Linux e388671635acf470f0986d874389148fd234620b","Linux 232f0ba4d69263af5912e279fcc32fef2882b1dc","Linux >= 5.4.258 < 5.5","Linux >= 5.10.198 < 5.11","Linux >= 5.15.134 < 5.16","Linux >= 6.1.56 < 6.2","Linux >= 6.5.6 < 6.6","Linux 6.6"],"published":"2026-09-17","updated":"2026-09-17","sourceUpdated":"2026-09-17T17:17:54.900","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-92520","references":[{"url":"https://git.kernel.org/stable/c/1534c4bff3aaca19c4c9a82f93e9b81f7c983de3","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/7ac6e1ae41a09f1dd4baeeff1d028ae49ee01232","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/e2396b8a562073787e627a5f483f1bc5c452fa6a","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-17T16:21:47.776Z","epss":0.00166,"epssPercentile":0.06263,"slug":"CVE-2026-92520","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Zero queue and stack outputs on lock failure\n\nQueue and stack pop/peek helpers accept an uninitialized output buffer\nbecause the verifier expects the helper to initialize it. The empty-map\nerror path clears the buffer, but a failed lock acquisition returns\n-EBUSY without writing it.\n\nClear the output before returning -EBUSY so BPF programs cannot observe\nuninitialized stack contents after a failed helper call.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}