SB2023020724 - SUSE update for the Linux Kernel (Live Patch 5 for SLE 15 SP4) 

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Main Vulnerability Database SB2023020724

SB2023020724 - SUSE update for the Linux Kernel (Live Patch 5 for SLE 15 SP4)

Published: February 7, 2023

Security Bulletin ID SB2023020724
Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 50% Low 50%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Use-after-free (CVE-ID: CVE-2022-2602)

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error caused by an io_uring request, which is being processed on a registered file. The Unix GC runs and frees the io_uring file descriptor and all the registered file descriptors in a specific order that may allow a local user to win a race and execute arbitrary code with elevated privileges.


2) Use-after-free (CVE-ID: CVE-2022-4379)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a use-after-free error within the __nfs42_ssc_open() function in fs/nfs/nfs4file.c. A remote attacker can perform a denial of service (DoS) attack.



Remediation

Install update from vendor's website.

References