{"id":"CVE-2026-90262","title":"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","summary":"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 lo…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 06ed09351b67eb1114ae106a87a0ee3ea9adb3db < 90e9eae1b5907fa36620ffb7f4f1a4afa9333427","Linux >= 06ed09351b67eb1114ae106a87a0ee3ea9adb3db < c1fa005cdf3b7ff14cdfd7d512830088a3fc256b","Linux >= 06ed09351b67eb1114ae106a87a0ee3ea9adb3db < 12b6d1a1715cbced2e445ca353f9c9987b8636e2","Linux >= 06ed09351b67eb1114ae106a87a0ee3ea9adb3db < 81241f734f0f662378f5ffc53882b012923e6fe5","Linux >= 06ed09351b67eb1114ae106a87a0ee3ea9adb3db < 8cc569696dac51fc62bb39b3b8f530582b916d29","Linux 6.6"],"published":"2026-09-17","updated":"2026-09-17","sourceUpdated":"2026-09-17T17:17:22.640","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-90262","references":[{"url":"https://git.kernel.org/stable/c/12b6d1a1715cbced2e445ca353f9c9987b8636e2","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/81241f734f0f662378f5ffc53882b012923e6fe5","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/8cc569696dac51fc62bb39b3b8f530582b916d29","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/90e9eae1b5907fa36620ffb7f4f1a4afa9333427","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/c1fa005cdf3b7ff14cdfd7d512830088a3fc256b","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-17T16:21:47.841Z","epss":0.002,"epssPercentile":0.10163,"slug":"CVE-2026-90262","body":"## Overview\n\nIn 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}