SB2023030910 - Red Hat Enterprise Linux 8.6 Extended Update Support update for kernel
Published: March 9, 2023
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 secuirty vulnerabilities.
1) Out-of-bounds write (CVE-ID: CVE-2022-2964)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error within the ASIX AX88179_178A-based USB 2.0/3.0 Gigabit Ethernet Devices driver in Linux kernel. A local user can trigger an out-of-bounds write and execute arbitrary code with elevated privileges.
2) Deadlock (CVE-ID: CVE-2022-4269)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to an error in the Linux kernel Traffic Control (TC) subsystem. A local user can use a specific network configuration (redirecting egress packets to ingress using TC action "mirred") to trigger a CPU soft lockup.
3) Use-after-free (CVE-ID: CVE-2022-41222)
The vulnerability allows a local user to gain access to sensitive information.
The vulnerability exists due to a use-after-free error caused by a stale TLB in mm/mremap.c, because an rmap lock is not held during a PUD move. A local user can gain access to sensitive information.
Remediation
Install update from vendor's website.