SB2023062964 - Improper locking in Linux kernel io_uring
Published: June 29, 2023
Security Bulletin ID
SB2023062964
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Improper locking (CVE-ID: CVE-2023-2430)
The vulnerability allows a local user to perform a denial of service attack (DoS).
The vulnerability exists due to improper locking within the io_uring subsystem in Linux kernel when IOPOLL mode is being
used. A local user can crash the kernel.
Remediation
Install update from vendor's website.