SB2025081850 - Reachable assertion in Linux kernel btrfs
Published: August 18, 2025
Security Bulletin ID
SB2025081850
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) Reachable assertion (CVE-ID: CVE-2025-38503)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to reachable assertion within the populate_free_space_tree() function in fs/btrfs/free-space-tree.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/0bcc14f36c7ad37121cf5c0ae18cdde5bfad9c4e
- https://git.kernel.org/stable/c/1961d20f6fa8903266ed9bd77c691924c22c8f02
- https://git.kernel.org/stable/c/6bbe6530b1db7b4365ce9e86144c18c5d73b2c5b
- https://git.kernel.org/stable/c/7c77df23324f60bcff0ea44392e2c82e9486640c
- https://git.kernel.org/stable/c/f4428b2d4c68732653e93f748f538bdee639ff80