Medium 5.5Published Mar 18, 2026

CVE-2026-23258net: liquidio: Initialize netdev pointer before queue setup

Updated under an hour ago (Oct 26, 2026, 4:10 PM ET)

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Exploited in the last 30 days

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.

CVSS: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Analyzed
Record last updated: May 11, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from c33c997346c34ea7b89aec99524ad9632a2f1e0c before be109646cdaecab262f6276303b1763468c94378; from c33c997346c34ea7b89aec99524ad9632a2f1e0c before c81a8515fb8c8fb5d0dbc21f48337494bf1d60df; from c33c997346c34ea7b89aec99524ad9632a2f1e0c before a0e57c0b68c9e6f9a8fd7c1167861a5a730eb2f4; from c33c997346c34ea7b89aec99524ad9632a2f1e0c before c0ed6c77ec34050971fd0df2a94dfdea66d09331; from c33c997346c34ea7b89aec99524ad9632a2f1e0c before 1d4590fde856cb94bd9a46e795c29d8288c238fc; from c33c997346c34ea7b89aec99524ad9632a2f1e0c before d028147ae06407cb355245db1774793600670169; from c33c997346c34ea7b89aec99524ad9632a2f1e0c before 926ede0c85e1e57c97d64d9612455267d597bb2c	CNA record
linux linux_kernel linux:linux_kernel	from 4.18 before 5.10.250; from 5.11 before 5.15.200; from 5.16 before 6.1.163; from 6.2 before 6.6.124; from 6.7 before 6.12.70; from 6.13 before 6.18.10; 6.19; 6.19; and 6 more ranges	NVD

References

References

https://git.kernel.org/stable/c/be109646cdaecab262f6276303b1763468c94378	patch
https://git.kernel.org/stable/c/c81a8515fb8c8fb5d0dbc21f48337494bf1d60df	patch
https://git.kernel.org/stable/c/a0e57c0b68c9e6f9a8fd7c1167861a5a730eb2f4	patch
https://git.kernel.org/stable/c/c0ed6c77ec34050971fd0df2a94dfdea66d09331	patch
https://git.kernel.org/stable/c/1d4590fde856cb94bd9a46e795c29d8288c238fc	patch
https://git.kernel.org/stable/c/d028147ae06407cb355245db1774793600670169	patch
https://git.kernel.org/stable/c/926ede0c85e1e57c97d64d9612455267d597bb2c	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.