{"id":"CVE-2026-90262","state":"PUBLISHED","title":"btrfs: retry verity reads for not-uptodate Merkle folios","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: retry verity reads for not-uptodate Merkle folios\n\nbtrfs_read_merkle_tree_page() can find a folio in the mapping that is not\nuptodate.  After taking the folio lock, the current code treats that state\nas a read error and returns -EIO.\n\nThat can make a previous transient read failure sticky.  If the failed read\nleft a not-uptodate folio in the mapping, later callers find that folio and\nfail instead of retrying the read.\n\nKeep the existing page-cache insertion and locking order, but retry the\nMerkle item read when a not-uptodate folio is found in the mapping.  Also\nunlock the folio when read_key_bytes() fails so that a later caller can\nlock it and retry the read.","publishedAt":"2026-09-17T16:07:59.435Z","updatedAt":"2026-10-19T09:00:38.640Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"06ed09351b67eb1114ae106a87a0ee3ea9adb3db","status":"affected","lessThan":"90e9eae1b5907fa36620ffb7f4f1a4afa9333427","versionType":"git"},{"version":"06ed09351b67eb1114ae106a87a0ee3ea9adb3db","status":"affected","lessThan":"c1fa005cdf3b7ff14cdfd7d512830088a3fc256b","versionType":"git"},{"version":"06ed09351b67eb1114ae106a87a0ee3ea9adb3db","status":"affected","lessThan":"12b6d1a1715cbced2e445ca353f9c9987b8636e2","versionType":"git"},{"version":"06ed09351b67eb1114ae106a87a0ee3ea9adb3db","status":"affected","lessThan":"81241f734f0f662378f5ffc53882b012923e6fe5","versionType":"git"},{"version":"06ed09351b67eb1114ae106a87a0ee3ea9adb3db","status":"affected","lessThan":"8cc569696dac51fc62bb39b3b8f530582b916d29","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/btrfs/verity.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.6","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.6","versionType":"semver"},{"version":"6.6.157","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.110","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"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/btrfs/verity.c"]}],"references":["https://git.kernel.org/stable/c/90e9eae1b5907fa36620ffb7f4f1a4afa9333427","https://git.kernel.org/stable/c/c1fa005cdf3b7ff14cdfd7d512830088a3fc256b","https://git.kernel.org/stable/c/12b6d1a1715cbced2e445ca353f9c9987b8636e2","https://git.kernel.org/stable/c/81241f734f0f662378f5ffc53882b012923e6fe5","https://git.kernel.org/stable/c/8cc569696dac51fc62bb39b3b8f530582b916d29"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:34.582Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/90xxx/CVE-2026-90262.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-90262","state":"PUBLISHED","datePublished":"2026-09-17T16:07:59.435Z","dateUpdated":"2026-10-19T09:00:38.640Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-11T19:38:34.796Z"},"containers":{"cna":{"title":"btrfs: retry verity reads for not-uptodate Merkle folios","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: retry verity reads for not-uptodate Merkle folios\n\nbtrfs_read_merkle_tree_page() can find a folio in the mapping that is not\nuptodate.  After taking the folio lock, the current code treats that state\nas a read error and returns -EIO.\n\nThat can make a previous transient read failure sticky.  If the failed read\nleft a not-uptodate folio in the mapping, later callers find that folio and\nfail instead of retrying the read.\n\nKeep the existing page-cache insertion and locking order, but retry the\nMerkle item read when a not-uptodate folio is found in the mapping.  Also\nunlock the folio when read_key_bytes() fails so that a later caller can\nlock it and retry the read."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"06ed09351b67eb1114ae106a87a0ee3ea9adb3db","status":"affected","lessThan":"90e9eae1b5907fa36620ffb7f4f1a4afa9333427","versionType":"git"},{"version":"06ed09351b67eb1114ae106a87a0ee3ea9adb3db","status":"affected","lessThan":"c1fa005cdf3b7ff14cdfd7d512830088a3fc256b","versionType":"git"},{"version":"06ed09351b67eb1114ae106a87a0ee3ea9adb3db","status":"affected","lessThan":"12b6d1a1715cbced2e445ca353f9c9987b8636e2","versionType":"git"},{"version":"06ed09351b67eb1114ae106a87a0ee3ea9adb3db","status":"affected","lessThan":"81241f734f0f662378f5ffc53882b012923e6fe5","versionType":"git"},{"version":"06ed09351b67eb1114ae106a87a0ee3ea9adb3db","status":"affected","lessThan":"8cc569696dac51fc62bb39b3b8f530582b916d29","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/btrfs/verity.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.6","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.6","versionType":"semver"},{"version":"6.6.157","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.110","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"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/btrfs/verity.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/90e9eae1b5907fa36620ffb7f4f1a4afa9333427"},{"url":"https://git.kernel.org/stable/c/c1fa005cdf3b7ff14cdfd7d512830088a3fc256b"},{"url":"https://git.kernel.org/stable/c/12b6d1a1715cbced2e445ca353f9c9987b8636e2"},{"url":"https://git.kernel.org/stable/c/81241f734f0f662378f5ffc53882b012923e6fe5"},{"url":"https://git.kernel.org/stable/c/8cc569696dac51fc62bb39b3b8f530582b916d29"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T09:00:38.640Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"6.6.157"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"6.12.110"},{"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"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}