SB2023032737 - Red Hat Enterprise Linux 9.0 Extended Update Support update for kernel
Published: March 27, 2023
Security Bulletin ID
SB2023032737
CSH 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 vulnerability.
1) Double Free (CVE-ID: CVE-2022-4744)
CWE-ID: CWE-415 - Double Free
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error within the tun_free_netdev() function in the Linux kernel’s TUN/TAP device driver. A local user can trigger a double free error and execute arbitrary code with elevated privileges.
Remediation
Install update from vendor's website.