SB2026050942 - Integer overflow in Linux kernel ipv6

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Main Vulnerability Database SB2026050942

SB2026050942 - Integer overflow in Linux kernel ipv6

Published: May 9, 2026

Security Bulletin ID SB2026050942
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Denial of service

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Integer overflow (CVE-ID: CVE-2026-43341)

CWE-ID: CWE-190 - Integer overflow

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear


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

The vulnerability exists due to an integer overflow in ioam6_fill_trace_data() when processing IPv6 IOAM trace data with bit 22 enabled and a maximal schema payload. A local user can trigger the vulnerable code path to cause a denial of service.

The issue occurs because the schema length can wrap from 256 to 0, bypassing the remaining-space check and leading to a trace buffer overrun.


Remediation

Install update from vendor's website.

References