Linux · Linux Kernel · CVE-2026-43066
**Name of the Vulnerable Software and Affected Versions**
Linux kernel (affected versions not specified)
**Description**
A memory leak occurs in the ext4 file system within the `ext4 fc replay inode()` function. The function calls `ext4 get fc inode loc()` to obtain the inode location, which creates a reference to `iloc.bh` that requires release via `brelse()`. However, certain error paths—specifically failures in `ext4 handle dirty metadata()`, `sync dirty buffer()`, `ext4 mark inode used()`, and `ext4 iget()`—jump to the exit label without releasing `iloc.bh`. Additionally, the `ext4 fc replay inode()` function fails to propagate errors correctly, returning 0 regardless of the outcome.
**Recommendations**
At the moment, there is no information about a newer version that contains a fix for this vulnerability.