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Linux Kernel Btrfs NULL Pointer Dereference Vulnerability in Log Replay Handling

Vulnerability

A NULL pointer dereference vulnerability has been identified in the Linux kernel's Btrfs file system. This issue arises in the 'do_abort_log_replay()' function, where a NULL pointer is unconditionally dereferenced when the 'btrfs_alloc_path()' function fails. The vulnerability is present in the stable versions of the Linux kernel.

Impact

Exploitation of this vulnerability leads to a NULL pointer dereference, causing a crash or undefined behavior in the kernel.

Remediation

Users can upgrade to the latest stable version of the Linux kernel to address this vulnerability.

Added: Feb 4, 2026, 4:24 PM
Updated: Feb 4, 2026, 4:41 PM

Vulnerability Rating

Custom Algorithm
spread
9.0
impact
2.5
exploitability
3.5
remediation
7.7
relevance
2.5
threat
3.2
urgency
2.9
incentive
0.0

Our algorithm analyzes dozens of metrics to generate these 8 key vulnerability categories, which are then combined to calculate the overall risk score.