SB2026081665 - Improper input validation in Linux kernel netfilter ipvs

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB2026081665

SB2026081665 - Improper input validation in Linux kernel netfilter ipvs

Published: August 16, 2026

Security Bulletin ID SB2026081665
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Improper input validation (CVE-ID: CVE-2026-72319)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to improper input validation in ip_vs_in_icmp in the IPVS subsystem when processing ICMP error packets from tunnels. A remote attacker can send a specially crafted ICMP error packet to cause a denial of service.

The issue involves inner IP headers not being ensured in skb headroom after outer headers are stripped, and additional length checks were required for the inner headers.


Remediation

Install update from vendor's website.

References