{"id":"CVE-2026-98447","state":"PUBLISHED","title":"xfs: fix wild memcpy access when formatting ondisk rtrefcount btree roots","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nxfs: fix wild memcpy access when formatting ondisk rtrefcount btree roots\n\nLOLLM noticed that the inode btree root formatting methods copy too many\nbytes -- there's only one set of keys in node blocks, not two.  This\ncauses memory corruption of whatever's beyond the buffers.","publishedAt":"2026-10-18T15:14:57.561Z","updatedAt":"2026-10-19T09:19:42.728Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"f0415af60f482a2192065be8b334b409495ca8a3","status":"affected","lessThan":"d46492fb8018d12d00651b06b9d240e747110b38","versionType":"git"},{"version":"f0415af60f482a2192065be8b334b409495ca8a3","status":"affected","lessThan":"2703b954d306ebfe3b11e33e259759329c11b690","versionType":"git"},{"version":"f0415af60f482a2192065be8b334b409495ca8a3","status":"affected","lessThan":"fe2f9135df43db849e74f03956d322ac20b59af7","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/xfs/libxfs/xfs_rtrefcount_btree.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.14","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.14","versionType":"semver"},{"version":"6.18.55","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.9","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/xfs/libxfs/xfs_rtrefcount_btree.c"]}],"references":["https://git.kernel.org/stable/c/d46492fb8018d12d00651b06b9d240e747110b38","https://git.kernel.org/stable/c/2703b954d306ebfe3b11e33e259759329c11b690","https://git.kernel.org/stable/c/fe2f9135df43db849e74f03956d322ac20b59af7"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:43.249Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/98xxx/CVE-2026-98447.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98447","state":"PUBLISHED","datePublished":"2026-10-18T15:14:57.561Z","dateUpdated":"2026-10-19T09:19:42.728Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-25T10:25:14.349Z"},"containers":{"cna":{"title":"xfs: fix wild memcpy access when formatting ondisk rtrefcount btree roots","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nxfs: fix wild memcpy access when formatting ondisk rtrefcount btree roots\n\nLOLLM noticed that the inode btree root formatting methods copy too many\nbytes -- there's only one set of keys in node blocks, not two.  This\ncauses memory corruption of whatever's beyond the buffers."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"f0415af60f482a2192065be8b334b409495ca8a3","status":"affected","lessThan":"d46492fb8018d12d00651b06b9d240e747110b38","versionType":"git"},{"version":"f0415af60f482a2192065be8b334b409495ca8a3","status":"affected","lessThan":"2703b954d306ebfe3b11e33e259759329c11b690","versionType":"git"},{"version":"f0415af60f482a2192065be8b334b409495ca8a3","status":"affected","lessThan":"fe2f9135df43db849e74f03956d322ac20b59af7","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/xfs/libxfs/xfs_rtrefcount_btree.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.14","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.14","versionType":"semver"},{"version":"6.18.55","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.9","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/xfs/libxfs/xfs_rtrefcount_btree.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/d46492fb8018d12d00651b06b9d240e747110b38"},{"url":"https://git.kernel.org/stable/c/2703b954d306ebfe3b11e33e259759329c11b690"},{"url":"https://git.kernel.org/stable/c/fe2f9135df43db849e74f03956d322ac20b59af7"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T09:19:42.728Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.14","versionEndExcluding":"6.18.55"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.14","versionEndExcluding":"7.2.9"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.14","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}