CVE-2026-90262

A flaw was found in the Linux kernel's btrfs filesystem. This flaw occurs when the btrfs_read_merkle_tree_page() function encounters a Merkle folio that is not up-to-date. Instead of retrying the read, the system incorrectly treats this as a permanent error, causing transient read failures to become persistent. This can lead to a denial of service (DoS) for read operations, preventing legitimate access to data on affected btrfs volumes.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.