CVE-2026-23258

MEDIUM

net: liquidio: Initialize netdev pointer before queue setup

Title source: cna
STIX 2.1

Description

In the Linux kernel, the following vulnerability has been resolved: net: liquidio: Initialize netdev pointer before queue setup In setup_nic_devices(), the netdev is allocated using alloc_etherdev_mq(). However, the pointer to this structure is stored in oct->props[i].netdev only after the calls to netif_set_real_num_rx_queues() and netif_set_real_num_tx_queues(). If either of these functions fails, setup_nic_devices() returns an error without freeing the allocated netdev. Since oct->props[i].netdev is still NULL at this point, the cleanup function liquidio_destroy_nic_device() will fail to find and free the netdev, resulting in a memory leak. Fix this by initializing oct->props[i].netdev before calling the queue setup functions. This ensures that the netdev is properly accessible for cleanup in case of errors. Compile tested only. Issue found using a prototype static analysis tool and code review.

Scores

CVSS v3 5.5
EPSS 0.0011
EPSS Percentile 1.8%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-401
Status published
Products (24)
linux/Kernel 4.18.0 - 5.10.250linux
linux/Kernel 5.11.0 - 5.15.200linux
linux/Kernel 5.16.0 - 6.1.163linux
linux/Kernel 6.13.0 - 6.18.10linux
linux/Kernel 6.2.0 - 6.6.124linux
linux/Kernel 6.7.0 - 6.12.70linux
Linux/Linux < 4.18
Linux/Linux 4.18
Linux/Linux 5.10.250 - 5.10.*
Linux/Linux 5.15.200 - 5.15.*
... and 14 more
Published Mar 18, 2026
Tracked Since Mar 18, 2026