SB2026032571 - Function Call with Incorrectly Specified Arguments in Linux kernel sched

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Main Vulnerability Database SB2026032571

SB2026032571 - Function Call with Incorrectly Specified Arguments in Linux kernel sched

Published: March 25, 2026

Security Bulletin ID SB2026032571
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 security vulnerability.


1) Function Call with Incorrectly Specified Arguments (CVE-ID: CVE-2026-23379)

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

The vulnerability exists due to improper input validation in the ets_offload_change function when handling traffic control (tc) commands for ETS qdisc offloading. A local user can send a specially crafted request to trigger a divide-by-zero error, leading to a kernel oops and system crash.

The issue arises from unsigned 32-bit integer overflows in 'q_sum' and 'q_psum' variables during WRR weight computation, which can result in division by zero in the offload path.


Remediation

Install update from vendor's website.

References