The vulnerability of the lookup_extent_data_ref() function in the fs/btrfs/extent-tree.c file of the Btrfs file system in the Linux operating system allows a attacker to compromise the confidentiality, integrity, and accessibility of the protected information.

The vulnerability of the lookupextentdataref function in the fs/btrfs/extent-tree.c file of the Btrfs file system in the Linux operating system is related to the return of incorrect code states. Exploitation of this vulnerability may allow an attacker to compromise the confidentiality, integrity,...

CVE-2026-31666: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix incorrect return value after changing leaf in lookupextentdataref After commit 1618aa3c2e01 "btrfs: simplify return variables in lookupextentdataref", the err and ret variables were merged into a single ret variable...