SB2023102438 - SUSE update for the Linux Kernel RT (Live Patch 11 for SLE 15 SP4) 

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Main Vulnerability Database SB2023102438

SB2023102438 - SUSE update for the Linux Kernel RT (Live Patch 11 for SLE 15 SP4)

Published: October 24, 2023 Updated: January 3, 2025

Security Bulletin ID SB2023102438
Severity
Low
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Local access
Highest impact Code execution

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Use-after-free (CVE-ID: CVE-2023-4147)

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

The vulnerability exists due to a use-after-free error in Netfilter functionality when adding a rule with NFTA_RULE_CHAIN_ID. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.


2) Use-after-free (CVE-ID: CVE-2023-4623)

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

The vulnerability exists due to a use-after-free error within the the Linux kernel net/sched: sch_hfsc (HFSC qdisc traffic control) component. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.


Remediation

Install update from vendor's website.

References