SB2022111443 - Privilege escalation in Linux kernel usbmon
Published: November 14, 2022
Security Bulletin ID
SB2022111443
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) Out-of-bounds write (CVE-ID: CVE-2022-43750)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error within the drivers/usb/mon/mon_bin.c in usbmon in the Linux kernel. A local user can trigger an out-of-bounds write and execute arbitrary code with elevated privileges.
Remediation
Install update from vendor's website.
References
- https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.0.1
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a659daf63d16aa883be42f3f34ff84235c302198
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.15
- https://github.com/torvalds/linux/commit/a659daf63d16aa883be42f3f34ff84235c302198
- https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html