SB2022111412 - Privilege escalation in Linux kernel mctp
Published: November 14, 2022
Security Bulletin ID
SB2022111412
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-2022-3977)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the mctp_sk_unhash(0 function in net/mctp/af_mctp.c. A local user can trigger a use-after-free error and escalate privileges on the system.
Remediation
Install update from vendor's website.