SB2024061029 - Privilege escalation in Linux kernel
Published: June 10, 2024
Security Bulletin ID
SB2024061029
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-2024-0562)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the Linux Kernel. When a disk is removed, bdi_unregister is called to stop further
write-back and waits for associated delayed work to complete. However,
wb_inode_writeback_end() may schedule bandwidth estimation work after
this has completed, which can result in the timer attempting to access
the recently freed bdi_writeback. A local user can execute arbitrary code with elevated privileges.
Remediation
Install update from vendor's website.