SB20250502192 - NULL pointer dereference in Linux kernel btrfs
Published: May 2, 2025 Updated: May 10, 2025
Security Bulletin ID
SB20250502192
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) NULL pointer dereference (CVE-ID: CVE-2022-49831)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the btrfs_init_devices_late() function in fs/btrfs/volumes.c, within the btrfs_read_roots() function in fs/btrfs/disk-io.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/544f38a738343d7e75f104e5e9d1ade58d8b71bd
- https://git.kernel.org/stable/c/91c38504e589dadbcde47b1cacdfc5b684154d44
- https://git.kernel.org/stable/c/a8d1b1647bf8244a5f270538e9e636e2657fffa3
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.79
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.0.9
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1