CVE-2026-90262
Description
In the Linux kernel, the following vulnerability has been resolved: btrfs: retry verity reads for not-uptodate Merkle folios btrfs_read_merkle_tree_page() can find a folio in the mapping that is not uptodate. After taking the folio lock, the current code treats that state as a read error and returns -EIO. That can make a previous transient read failure sticky. If the failed read left a not-uptodate folio in the mapping, later callers find that folio and fail instead of retrying the read. Keep the existing page-cache insertion and locking order, but retry the Merkle item read when a not-uptodate folio is found in the mapping. Also unlock the folio when read_key_bytes() fails so that a later caller can lock it and retry the read.
How to fix
- Linux Linux90e9eae1b5907fa36620ffb7f4f1a4afa9333427, c1fa005cdf3b7ff14cdfd7d512830088a3fc256b, 12b6d1a1715cbced2e445ca353f9c9987b8636e2, 81241f734f0f662378f5ffc53882b012923e6fe5, 8cc569696dac51fc62bb39b3b8f530582b916d29 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 06ed09351b67eb1114ae106a87a0ee3ea9adb3db ≤ v < 90e9eae1b5907fa36620ffb7f4f1a4afa9333427, 06ed09351b67eb1114ae106a87a0ee3ea9adb3db ≤ v < c1fa005cdf3b7ff14cdfd7d512830088a3fc256b, 06ed09351b67eb1114ae106a87a0ee3ea9adb3db ≤ v < 12b6d1a1715cbced2e445ca353f9c9987b8636e2, 06ed09351b67eb1114ae106a87a0ee3ea9adb3db ≤ v < 81241f734f0f662378f5ffc53882b012923e6fe5, 06ed09351b67eb1114ae106a87a0ee3ea9adb3db ≤ v < 8cc569696dac51fc62bb39b3b8f530582b916d29, 6.6 | 90e9eae1b5907fa36620ffb7f4f1a4afa9333427, c1fa005cdf3b7ff14cdfd7d512830088a3fc256b, 12b6d1a1715cbced2e445ca353f9c9987b8636e2, 81241f734f0f662378f5ffc53882b012923e6fe5, 8cc569696dac51fc62bb39b3b8f530582b916d29 |
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