SB2025091979 - Use-after-free in Linux kernel btrfs
Published: September 19, 2025 Updated: September 22, 2025
Security Bulletin ID
SB2025091979
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Use-after-free (CVE-ID: CVE-2022-50379)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the btrfs_quota_enable() function in fs/btrfs/qgroup.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/0efd9dfc00d677a1d0929319a6103cb2dfc41c22
- https://git.kernel.org/stable/c/26b7c0ac49a3eea15559c9d84863736a6d1164b4
- https://git.kernel.org/stable/c/331cd9461412e103d07595a10289de90004ac890
- https://git.kernel.org/stable/c/47b5ffe86332af95f0f52be0a63d4da7c2b37b55
- https://git.kernel.org/stable/c/4b996a3014ef014af8f97b60c35f5289210a4720
- https://git.kernel.org/stable/c/6c22f86dd221eba0c7af645b1af73dcbc04ee27b
- https://git.kernel.org/stable/c/c97f6d528c3f1c83a6b792a8a7928c236c80b8fe
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.262