SB20250619137 - Use-after-free in Linux kernel md driver
Published: June 19, 2025 Updated: June 21, 2025
Security Bulletin ID
SB20250619137
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-2022-50092)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the pool_ctr() function in drivers/md/dm-thin.c, within the dm_pool_register_metadata_threshold() function in drivers/md/dm-thin-metadata.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/05cef0999b3208b5a6ede1bfac855139e4de55ef
- https://git.kernel.org/stable/c/1a199fa9217d28511ff88529238fd9980ea64cf3
- https://git.kernel.org/stable/c/3534e5a5ed2997ca1b00f44a0378a075bd05e8a3
- https://git.kernel.org/stable/c/5e2cf705155a1514be3c96ea664a9cd356998ee7
- https://git.kernel.org/stable/c/e4dbe24f4bfd8377e7ba79fdcdb7c4d6eb1c6790
- https://git.kernel.org/stable/c/f83131a3071a0b61a4d7dca70f95adb3ffad920e
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.61