{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98057","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-09-25T10:19:56.072Z","datePublished":"2026-09-25T10:24:03.541Z","dateUpdated":"2026-09-25T10:24:03.541Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-09-25T10:24:03.541Z"},"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."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/trace/ring_buffer.c"],"versions":[{"version":"3ec743d558f111d8999aea24577ba66c65ee2eeb","lessThan":"f0467190e6a9fc61e343c8064ef16aad513788c3","status":"affected","versionType":"git"},{"version":"f5b95f1fa2ef3a03f49eeec658ba97e721412b32","lessThan":"69d502457e3f76142f7fcf6e2625e80e0ce8a60f","status":"affected","versionType":"git"},{"version":"f5b95f1fa2ef3a03f49eeec658ba97e721412b32","lessThan":"6c001a62c34f13fe1c6a24304c289b387d9e697d","status":"affected","versionType":"git"},{"version":"0d547a6f5e8fad26ebc12f501d7d19fccdbad6bf","status":"affected","versionType":"git"},{"version":"6.12.16","lessThan":"6.12.111","status":"affected","versionType":"semver"},{"version":"6.13.4","lessThan":"6.14","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/trace/ring_buffer.c"],"versions":[{"version":"6.14","status":"affected"},{"version":"0","lessThan":"6.14","status":"unaffected","versionType":"semver"},{"version":"6.12.111","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"7.2.7","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3-rc2","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":"6.12.16","versionEndExcluding":"6.12.111"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.14","versionEndExcluding":"7.2.7"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.14","versionEndExcluding":"7.3-rc2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13.4"}]}]}],"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"}}}}