CVE-2026-23258

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-23258
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.

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/1d4590fde856cb94bd9a46e795c29d8288c238fc Patch
https://git.kernel.org/stable/c/926ede0c85e1e57c97d64d9612455267d597bb2c Patch
https://git.kernel.org/stable/c/a0e57c0b68c9e6f9a8fd7c1167861a5a730eb2f4 Patch
https://git.kernel.org/stable/c/be109646cdaecab262f6276303b1763468c94378 Patch
https://git.kernel.org/stable/c/c0ed6c77ec34050971fd0df2a94dfdea66d09331 Patch
https://git.kernel.org/stable/c/c81a8515fb8c8fb5d0dbc21f48337494bf1d60df Patch
https://git.kernel.org/stable/c/d028147ae06407cb355245db1774793600670169 Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc7:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc8:*:*:*:*:*:*
History

29 May 2026, 18:52

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/1d4590fde856cb94bd9a46e795c29d8288c238fc - () https://git.kernel.org/stable/c/1d4590fde856cb94bd9a46e795c29d8288c238fc - Patch
References () https://git.kernel.org/stable/c/926ede0c85e1e57c97d64d9612455267d597bb2c - () https://git.kernel.org/stable/c/926ede0c85e1e57c97d64d9612455267d597bb2c - Patch
References () https://git.kernel.org/stable/c/a0e57c0b68c9e6f9a8fd7c1167861a5a730eb2f4 - () https://git.kernel.org/stable/c/a0e57c0b68c9e6f9a8fd7c1167861a5a730eb2f4 - Patch
References () https://git.kernel.org/stable/c/be109646cdaecab262f6276303b1763468c94378 - () https://git.kernel.org/stable/c/be109646cdaecab262f6276303b1763468c94378 - Patch
References () https://git.kernel.org/stable/c/c0ed6c77ec34050971fd0df2a94dfdea66d09331 - () https://git.kernel.org/stable/c/c0ed6c77ec34050971fd0df2a94dfdea66d09331 - Patch
References () https://git.kernel.org/stable/c/c81a8515fb8c8fb5d0dbc21f48337494bf1d60df - () https://git.kernel.org/stable/c/c81a8515fb8c8fb5d0dbc21f48337494bf1d60df - Patch
References () https://git.kernel.org/stable/c/d028147ae06407cb355245db1774793600670169 - () https://git.kernel.org/stable/c/d028147ae06407cb355245db1774793600670169 - Patch
CPE cpe:2.3:o:linux:linux_kernel:6.19:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc7:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc8:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
First Time Linux
Linux linux Kernel
Summary
  • (es) En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta: net: liquidio: Inicializar el puntero netdev antes de la configuración de la cola En setup_nic_devices(), el netdev se asigna usando alloc_etherdev_mq(). Sin embargo, el puntero a esta estructura se almacena en oct->props[i].netdev solo después de las llamadas a netif_set_real_num_rx_queues() y netif_set_real_num_tx_queues(). Si alguna de estas funciones falla, setup_nic_devices() devuelve un error sin liberar el netdev asignado. Dado que oct->props[i].netdev sigue siendo NULL en este punto, la función de limpieza liquidio_destroy_nic_device() no logrará encontrar y liberar el netdev, lo que resultará en una fuga de memoria. Corrija esto inicializando oct->props[i].netdev antes de llamar a las funciones de configuración de cola. Esto asegura que el netdev sea correctamente accesible para la limpieza en caso de errores. Probado solo en compilación. Problema encontrado usando una herramienta prototipo de análisis estático y revisión de código.
CWE CWE-401
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5

18 Mar 2026, 18:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-03-18 18:16

Updated : 2026-05-29 18:52

NVD link : CVE-2026-23258

Mitre link : CVE-2026-23258

CVE.ORG link : CVE-2026-23258

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-401

Missing Release of Memory after Effective Lifetime