SB20261023231 - Function Call with Incorrectly Specified Arguments in Linux kernel ipv6

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Main Vulnerability Database SB20261023231

SB20261023231 - Function Call with Incorrectly Specified Arguments in Linux kernel ipv6

Published: October 23, 2026

Security Bulletin ID SB20261023231
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Partial DoS

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Function Call with Incorrectly Specified Arguments (CVE-ID: CVE-2026-98934)

CWE-ID: CWE-628 - Function Call with Incorrectly Specified Arguments

CVSSv4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]


The vulnerability allows a local privileged user to trigger a kernel warning and potentially disrupt system availability.

The vulnerability exists due to failure to supply a required network namespace pointer in seg6_make_flowlabel() when computing flow hashes for packets without an associated device or socket. A local privileged user can trigger transmission of a TIPC UDP bearer discovery message through the affected path to provoke a warning in __skb_flow_dissect(), potentially disrupting system availability.

The reported trigger requires an IPv4 route using segment routing encapsulation and net.ipv6.seg6_flowlabel set to 1.


Remediation

Install update from vendor's website.

References