SB20260529110 - Incorrect calculation in Linux kernel ipv6

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Main Vulnerability Database SB20260529110

SB20260529110 - Incorrect calculation in Linux kernel ipv6

Published: May 29, 2026

Security Bulletin ID SB20260529110
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) Incorrect calculation (CVE-ID: CVE-2026-46193)

CWE-ID: CWE-682 - Incorrect Calculation

CVSSv4: 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/E:U/U:Green


The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper handling of ESN high bits in async callbacks in the AH implementation when processing AH packets with ESN enabled using an asynchronous AH implementation. A local user can send specially crafted AH traffic to cause a denial of service.

The issue affects both IPv4 and IPv6 AH paths, and exploitation requires ESN to be enabled with an asynchronous AH implementation selected.


Remediation

Install update from vendor's website.

References