SB2024042237 - Out-of-bounds read in Linux kernel openvswitch

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Main Vulnerability Database SB2024042237

SB2024042237 - Out-of-bounds read in Linux kernel openvswitch

Published: April 22, 2024 Updated: May 14, 2025

Security Bulletin ID SB2024042237
Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Information disclosure

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 security vulnerability.


1) Out-of-bounds read (CVE-ID: CVE-2021-46955)

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition within the ovs_fragment() function in net/openvswitch/actions.c when running openvswitch on kernels built with KASAN. A remote attacker can send specially crafted IPv4 packets to the system, trigger an out-of-bounds read error and read contents of memory on the system or crash the kernel.


Remediation

Install update from vendor's website.

References