SB2023012446 - Privilege escalation in Linux kernel io_uring
Published: January 24, 2023
Security Bulletin ID
SB2023012446
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-2022-4696)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error in io_uring and the IORING_OP_SPLICE operation. A local user can trigger a use-after-free error and escalate privileges on the system.
Remediation
Install update from vendor's website.