SB20240620170 - Use-after-free in Linux kernel btrfs
Published: June 20, 2024 Updated: May 13, 2025
Security Bulletin ID
SB20240620170
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-2022-48733)
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_wait_delalloc_flush() and btrfs_commit_transaction() functions in fs/btrfs/transaction.c, within the create_snapshot() function in fs/btrfs/ioctl.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/a7b717fa15165d3d9245614680bebc48a52ac05d
- https://git.kernel.org/stable/c/9372fa1d73da5f1673921e365d0cd2c27ec7adc2
- https://git.kernel.org/stable/c/28b21c558a3753171097193b6f6602a94169093a
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.226
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.22
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16.8
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.17