SB2023051784 - Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions update for kernel

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Main Vulnerability Database SB2023051784

SB2023051784 - Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions update for kernel

Published: May 17, 2023

Security Bulletin ID SB2023051784
Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Code execution

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-2023-0461)

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

The vulnerability exists due to a use-after-free error within the Upper Level Protocol (ULP) subsystem in Linux kernel caused by improper handling of sockets entering the LISTEN state in certain protocols. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.



2) Infinite loop (CVE-ID: CVE-2023-1390)

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

The vulnerability exists due to infinite loop in tipc_link_xmit() within the Linux kernel TIPC kernel module when parsing UDp packets. A remote attacker can send two small UDP packets to a system with a UDP bearer and consume all available CPU resources.


Remediation

Install update from vendor's website.

References