{"id":"CVE-2026-92520","aliases":[],"cve":{"records":[{"id":"CVE-2026-92520","source":"Linux","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-09-16T12:21:13.874Z","published":"2026-09-17T16:10:27.447Z","modified":"2026-10-30T12:35:45.323Z"}],"publishers":[{"name":"Linux","role":"CNA","organizationId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","modified":"2026-10-30T12:35:45.323Z"}],"references":[{"url":"https://git.kernel.org/stable/c/6468e8ac026b44ae2a78114b80f9d1b9164d0f6c","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/a6090eeb289c5fa45f7b629befac2bd3c19a6dae","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/23b4bcc79bab5285275912b94e98c286f281de75","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/1534c4bff3aaca19c4c9a82f93e9b81f7c983de3","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/e2396b8a562073787e627a5f483f1bc5c452fa6a","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/7ac6e1ae41a09f1dd4baeeff1d028ae49ee01232","tags":[],"source":"Linux"}],"weaknesses":[],"applicability":[{"source":"Linux","statements":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.1.56","versionEndExcluding":"6.1.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"6.12.114"},{"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"},{"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":"6.5.6"}]}]}]}],"prioritization":[]},"title":"bpf: Zero queue and stack outputs on lock failure","titleSource":"Linux","descriptionSource":"Linux","description":"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.","score":null,"severity":"unknown","published":"2026-09-17T16:10:27.447Z","modified":"2026-10-30T12:35:45.323Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"Linux","name":"Linux","platforms":[],"versions":[{"version":"e388671635acf470f0986d874389148fd234620b","status":"affected","lessThan":"6468e8ac026b44ae2a78114b80f9d1b9164d0f6c","versionType":"git"},{"version":"a34a9f1a19afe9c60ca0ea61dfeee63a1c2baac8","status":"affected","lessThan":"a6090eeb289c5fa45f7b629befac2bd3c19a6dae","versionType":"git"},{"version":"a34a9f1a19afe9c60ca0ea61dfeee63a1c2baac8","status":"affected","lessThan":"23b4bcc79bab5285275912b94e98c286f281de75","versionType":"git"},{"version":"a34a9f1a19afe9c60ca0ea61dfeee63a1c2baac8","status":"affected","lessThan":"1534c4bff3aaca19c4c9a82f93e9b81f7c983de3","versionType":"git"},{"version":"a34a9f1a19afe9c60ca0ea61dfeee63a1c2baac8","status":"affected","lessThan":"e2396b8a562073787e627a5f483f1bc5c452fa6a","versionType":"git"},{"version":"a34a9f1a19afe9c60ca0ea61dfeee63a1c2baac8","status":"affected","lessThan":"7ac6e1ae41a09f1dd4baeeff1d028ae49ee01232","versionType":"git"},{"version":"40e34ea01748e5b8afdd40a172868be1e1ab0ede","status":"affected","versionType":"git"},{"version":"388c9d3eefaea99828ee5000c693128a5b41ee7c","status":"affected","versionType":"git"},{"version":"acabf5df49aa3a4f9c96200102d893351b511a88","status":"affected","versionType":"git"},{"version":"232f0ba4d69263af5912e279fcc32fef2882b1dc","status":"affected","versionType":"git"},{"version":"6.1.56","status":"affected","lessThan":"6.1.191","versionType":"semver"},{"version":"5.4.258","status":"affected","lessThan":"5.5","versionType":"semver"},{"version":"5.10.198","status":"affected","lessThan":"5.11","versionType":"semver"},{"version":"5.15.134","status":"affected","lessThan":"5.16","versionType":"semver"},{"version":"6.5.6","status":"affected","lessThan":"6.6","versionType":"semver"}],"defaultStatus":"unaffected","cpes":[],"source":"Linux","url":"https://www.cve.org/CVERecord?id=CVE-2026-92520"},{"vendor":"Linux","name":"Linux","platforms":[],"versions":[{"version":"6.6","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.6","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.114","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.52","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.6","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"defaultStatus":"affected","cpes":[],"source":"Linux","url":"https://www.cve.org/CVERecord?id=CVE-2026-92520"}],"remediation":[],"references":["https://git.kernel.org/stable/c/6468e8ac026b44ae2a78114b80f9d1b9164d0f6c","https://git.kernel.org/stable/c/a6090eeb289c5fa45f7b629befac2bd3c19a6dae","https://git.kernel.org/stable/c/23b4bcc79bab5285275912b94e98c286f281de75","https://git.kernel.org/stable/c/1534c4bff3aaca19c4c9a82f93e9b81f7c983de3","https://git.kernel.org/stable/c/e2396b8a562073787e627a5f483f1bc5c452fa6a","https://git.kernel.org/stable/c/7ac6e1ae41a09f1dd4baeeff1d028ae49ee01232"],"sources":[{"name":"CVE","id":"CVE-2026-92520","modified":"2026-10-30T12:35:45.323Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-92520"}],"assessments":[],"sourceAffected":[],"observedAt":"2026-10-30T13:54:39.406Z","kev":{"status":"not-listed","checkedAt":"2026-11-15T02:05:34.570Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[],"aiSummary":{"text":"The Linux kernel has a vulnerability where BPF programs can observe uninitialized stack contents after a failed helper call due to a lock failure. The queue and stack pop/peek helpers accept an uninitialized output buffer. Affected versions include various git and semver versions.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-10-31T15:36:05.692Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-92520"}]}}