CVE Database›Document archive›CVE-2023-54236

CVE-2023-54236

kernel: net/net_failover: fix txq exceeding warning

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Severity

Moderate

Red Hat Product Security

5.8

CVSS 3.1

Review impact separately from score.

Published · December 30, 2025

Updated · June 30, 2026

Description

A flaw was identified in the Linux kernel’s net/net_failover networking code where the failover transmit queue (txq) count was initialized to 16, but under certain conditions the primary device’s transmit queue index could exceed this limit. If a packet is transmitted on a failover device and the primary device’s queue index is greater than the default 16,triggering a kernel backtrace and unexpected execution paths.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

CVSS / CWE

CVSS 3.1 · 5.8
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:H

CWE-131 · Incorrect Calculation of Buffer Size