SB20250327114 - Use-after-free in Linux kernel btrfs
Published: March 27, 2025 Updated: May 11, 2025
Security Bulletin ID
SB20250327114
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-2022-49761)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the run_one_delayed_ref() and btrfs_run_delayed_refs_for_head() functions in fs/btrfs/extent-tree.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/18bd1c9c02e64a3567f90c83c2c8b855531c8098
- https://git.kernel.org/stable/c/39f501d68ec1ed5cd5c66ac6ec2a7131c517bb92
- https://git.kernel.org/stable/c/853ffa1511b058c79a4c9bb1407b3b20ce311792
- https://git.kernel.org/stable/c/fdb4a70bb768d2a87890409597529ad81cb3de8a
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.90