SB2024022615 - Privilege escalation in Linux kernel io_uring
Published: February 26, 2024 Updated: September 26, 2025
Security Bulletin ID
SB2024022615
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-2024-0582)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the io_uring functionality in the way a user registers a buffer ring with IORING_REGISTER_PBUF_RING, mmap() it, and then frees it. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.
Remediation
Install update from vendor's website.