{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-92520","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-09-16T12:21:13.874Z","datePublished":"2026-09-17T16:10:27.447Z","dateUpdated":"2026-09-17T16:10:27.447Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-09-17T16:10:27.447Z"},"descriptions":[{"lang":"en","value":"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 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."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/bpf/queue_stack_maps.c"],"versions":[{"version":"a34a9f1a19afe9c60ca0ea61dfeee63a1c2baac8","lessThan":"1534c4bff3aaca19c4c9a82f93e9b81f7c983de3","status":"affected","versionType":"git"},{"version":"a34a9f1a19afe9c60ca0ea61dfeee63a1c2baac8","lessThan":"e2396b8a562073787e627a5f483f1bc5c452fa6a","status":"affected","versionType":"git"},{"version":"a34a9f1a19afe9c60ca0ea61dfeee63a1c2baac8","lessThan":"7ac6e1ae41a09f1dd4baeeff1d028ae49ee01232","status":"affected","versionType":"git"},{"version":"40e34ea01748e5b8afdd40a172868be1e1ab0ede","status":"affected","versionType":"git"},{"version":"388c9d3eefaea99828ee5000c693128a5b41ee7c","status":"affected","versionType":"git"},{"version":"acabf5df49aa3a4f9c96200102d893351b511a88","status":"affected","versionType":"git"},{"version":"e388671635acf470f0986d874389148fd234620b","status":"affected","versionType":"git"},{"version":"232f0ba4d69263af5912e279fcc32fef2882b1dc","status":"affected","versionType":"git"},{"version":"5.4.258","lessThan":"5.5","status":"affected","versionType":"semver"},{"version":"5.10.198","lessThan":"5.11","status":"affected","versionType":"semver"},{"version":"5.15.134","lessThan":"5.16","status":"affected","versionType":"semver"},{"version":"6.1.56","lessThan":"6.2","status":"affected","versionType":"semver"},{"version":"6.5.6","lessThan":"6.6","status":"affected","versionType":"semver"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/bpf/queue_stack_maps.c"],"versions":[{"version":"6.6","status":"affected"},{"version":"0","lessThan":"6.6","status":"unaffected","versionType":"semver"},{"version":"6.18.52","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.6","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3-rc1","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"6.18.52"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"7.2.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"7.3-rc1"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.4.258"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10.198"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15.134"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.1.56"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.5.6"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/1534c4bff3aaca19c4c9a82f93e9b81f7c983de3"},{"url":"https://git.kernel.org/stable/c/e2396b8a562073787e627a5f483f1bc5c452fa6a"},{"url":"https://git.kernel.org/stable/c/7ac6e1ae41a09f1dd4baeeff1d028ae49ee01232"}],"title":"bpf: Zero queue and stack outputs on lock failure","x_generator":{"engine":"bippy-1.2.0"}}}}