{"api_version":"1","generated_at":"2026-09-30T23:49:05+00:00","cve":"CVE-2026-98057","urls":{"html":"https://cve.report/CVE-2026-98057","api":"https://cve.report/api/cve/CVE-2026-98057.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-98057","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-98057"},"summary":{"title":"ring-buffer: Add checking nr_subbufs to persistent ring buffer validation","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nring-buffer: Add checking nr_subbufs to persistent ring buffer validation\n\nSashiko reported that the code was using meta->nr_subbufs without making\nsure that it matched the nr_pages + 1 on data that was assuming the two\nwere the same.\n\nAdd a check to the persistent ring buffer validation code to make sure\nthat the saved nr_subbufs matches what we expect.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-25 11:17:34","updated_at":"2026-09-30 14:10:59"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/69d502457e3f76142f7fcf6e2625e80e0ce8a60f","name":"https://git.kernel.org/stable/c/69d502457e3f76142f7fcf6e2625e80e0ce8a60f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/6c001a62c34f13fe1c6a24304c289b387d9e697d","name":"https://git.kernel.org/stable/c/6c001a62c34f13fe1c6a24304c289b387d9e697d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/f0467190e6a9fc61e343c8064ef16aad513788c3","name":"https://git.kernel.org/stable/c/f0467190e6a9fc61e343c8064ef16aad513788c3","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98057","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98057","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3ec743d558f111d8999aea24577ba66c65ee2eeb f0467190e6a9fc61e343c8064ef16aad513788c3 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f5b95f1fa2ef3a03f49eeec658ba97e721412b32 69d502457e3f76142f7fcf6e2625e80e0ce8a60f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f5b95f1fa2ef3a03f49eeec658ba97e721412b32 6c001a62c34f13fe1c6a24304c289b387d9e697d git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 0d547a6f5e8fad26ebc12f501d7d19fccdbad6bf git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.12.16 6.12.111 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.13.4 6.14 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.14","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.14 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.111 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.7 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc2 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"98057","cve":"CVE-2026-98057","epss":"0.001660000","percentile":"0.051900000","score_date":"2026-09-27","updated_at":"2026-09-28 00:02:24"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["kernel/trace/ring_buffer.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"f0467190e6a9fc61e343c8064ef16aad513788c3","status":"affected","version":"3ec743d558f111d8999aea24577ba66c65ee2eeb","versionType":"git"},{"lessThan":"69d502457e3f76142f7fcf6e2625e80e0ce8a60f","status":"affected","version":"f5b95f1fa2ef3a03f49eeec658ba97e721412b32","versionType":"git"},{"lessThan":"6c001a62c34f13fe1c6a24304c289b387d9e697d","status":"affected","version":"f5b95f1fa2ef3a03f49eeec658ba97e721412b32","versionType":"git"},{"status":"affected","version":"0d547a6f5e8fad26ebc12f501d7d19fccdbad6bf","versionType":"git"},{"lessThan":"6.12.111","status":"affected","version":"6.12.16","versionType":"semver"},{"lessThan":"6.14","status":"affected","version":"6.13.4","versionType":"semver"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["kernel/trace/ring_buffer.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.14"},{"lessThan":"6.14","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.111","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.7","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc2","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.111","versionStartIncluding":"6.12.16","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.7","versionStartIncluding":"6.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc2","versionStartIncluding":"6.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13.4","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nring-buffer: Add checking nr_subbufs to persistent ring buffer validation\n\nSashiko reported that the code was using meta->nr_subbufs without making\nsure that it matched the nr_pages + 1 on data that was assuming the two\nwere the same.\n\nAdd a check to the persistent ring buffer validation code to make sure\nthat the saved nr_subbufs matches what we expect."}],"providerMetadata":{"dateUpdated":"2026-09-25T10:24:03.541Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/f0467190e6a9fc61e343c8064ef16aad513788c3"},{"url":"https://git.kernel.org/stable/c/69d502457e3f76142f7fcf6e2625e80e0ce8a60f"},{"url":"https://git.kernel.org/stable/c/6c001a62c34f13fe1c6a24304c289b387d9e697d"}],"title":"ring-buffer: Add checking nr_subbufs to persistent ring buffer validation","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-98057","datePublished":"2026-09-25T10:24:03.541Z","dateReserved":"2026-09-25T10:19:56.072Z","dateUpdated":"2026-09-25T10:24:03.541Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-25 11:17:34","lastModifiedDate":"2026-09-30 14:10:59","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"98057","Ordinal":"1","Title":"ring-buffer: Add checking nr_subbufs to persistent ring buffer v","CVE":"CVE-2026-98057","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"98057","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nring-buffer: Add checking nr_subbufs to persistent ring buffer validation\n\nSashiko reported that the code was using meta->nr_subbufs without making\nsure that it matched the nr_pages + 1 on data that was assuming the two\nwere the same.\n\nAdd a check to the persistent ring buffer validation code to make sure\nthat the saved nr_subbufs matches what we expect.","Type":"Description","Title":"ring-buffer: Add checking nr_subbufs to persistent ring buffer v"}]}}}