SB20261015129 - Use of Uninitialized Variable in Linux kernel trace events

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Main Vulnerability Database SB20261015129

SB20261015129 - Use of Uninitialized Variable in Linux kernel trace events

Published: October 15, 2026

Security Bulletin ID SB20261015129
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Information disclosure

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Use of Uninitialized Variable (CVE-ID: CVE-2026-98402)

CWE-ID: CWE-457 - Use of Uninitialized Variable

CVSSv4: 0 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a local user to trigger a kernel warning.

The vulnerability exists due to use of an uninitialized transport header offset in the icmp_send tracepoint when recording ICMP send events. A local user can trigger ICMP error handling for a packet whose transport header has not been initialized to trigger a kernel warning.

The reported warning occurs with CONFIG_DEBUG_NET=y. Relevant processing paths include link failures, ARP errors, forwarding, and AF_PACKET.


Remediation

Install update from vendor's website.

References