PT-2026-2510 · Linux+3 · Linux Kernel+3
Published
2025-11-27
·
Updated
2026-05-11
·
CVE-2025-68778
CVSS v2.0
4.6
Medium
| Vector | AV:L/AC:L/Au:S/C:N/I:N/A:C |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
The Linux kernel contains a flaw within the Btrfs file system related to handling directory moves during transactions. Specifically, the system may incorrectly log inode information when a directory is moved and a new file with the same name is created in the original location before the move is fully committed. This can lead to a scenario where, after a power failure and subsequent file system replay, the file system detects an invalid hard link count for a directory, resulting in a mount failure. The issue arises from attempting to have a directory with two hard links during log replay, one for the old parent directory and another for the new parent directory. The error messages observed in dmesg/syslog indicate a corrupt leaf node with an invalid nlink value.
Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
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Weakness Enumeration
Related Identifiers
Affected Products
Btrfs
Linuxmint
Linux Kernel
Ubuntu