IM
IronMonkey Threat Research

CVE-2024-26820 MEDIUM

Published: 2024-04-17 | Last Modified: 2026-05-12 | Status: Modified

Description

In the Linux kernel, the following vulnerability has been resolved: hv_netvsc: Register VF in netvsc_probe if NET_DEVICE_REGISTER missed If hv_netvsc driver is unloaded and reloaded, the NET_DEVICE_REGISTER handler cannot perform VF register successfully as the register call is received before netvsc_probe is finished. This is because we register register_netdevice_notifier() very early( even before vmbus_driver_register()). To fix this, we try to register each such matching VF( if it is visible as a netdevice) at the end of netvsc_probe.

Additional Descriptions (1)

En el kernel de Linux, se resolvió la siguiente vulnerabilidad: hv_netvsc: registre VF en netvsc_probe si se perdió NET_DEVICE_REGISTER. Si el controlador hv_netvsc se descarga y se vuelve a cargar, el controlador NET_DEVICE_REGISTER no puede realizar el registro VF exitosamente ya que la llamada de registro se recibe antes de que finalice netvsc_probe. Esto se debe a que registramos Register_netdevice_notifier() muy temprano (incluso antes de vmbus_driver_register()). Para solucionar este problema, intentamos registrar cada VF coincidente (si es visible como un dispositivo de red) al final de netvsc_probe.

CVSS Metrics

Base Score: 5.5 (MEDIUM)

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

Attack VectorLOCAL
Attack ComplexityLOW
Privileges RequiredLOW
User InteractionNONE
ScopeUNCHANGED
Confidentiality ImpactNONE
Integrity ImpactNONE
Availability ImpactHIGH

Source: [email protected]

Type: Primary

Exploitability Score: 1.8

Impact Score: 3.6

Weaknesses

Source Type Description
[email protected] Primary
en NVD-CWE-noinfo

Affected Products

Vendor Product Version Update Type
linux linux_kernel * <built-in method update of dict object at 0x7fd2a1b79280> Operating System
linux linux_kernel * <built-in method update of dict object at 0x7fd2a1b78a40> Operating System
linux linux_kernel * <built-in method update of dict object at 0x7fd2dbcb8600> Operating System
linux linux_kernel * <built-in method update of dict object at 0x7fd2a1b79300> Operating System
linux linux_kernel * <built-in method update of dict object at 0x7fd2a1b7a7c0> Operating System
linux linux_kernel * <built-in method update of dict object at 0x7fd2a1b78b00> Operating System
linux linux_kernel * <built-in method update of dict object at 0x7fd36a68a600> Operating System
linux linux_kernel 6.8 <built-in method update of dict object at 0x7fd2a1b78540> Operating System
linux linux_kernel 6.8 <built-in method update of dict object at 0x7fd2a1b781c0> Operating System
linux linux_kernel 6.8 <built-in method update of dict object at 0x7fd2a1b7b380> Operating System
debian debian_linux 10.0 <built-in method update of dict object at 0x7fd37034b800> Operating System

Affected Configurations

Operator: OR

Vulnerable CPE
Yes cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Yes cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Yes cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Yes cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Yes cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Yes cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Yes cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Yes cpe:2.3:o:linux:linux_kernel:6.8:rc1:*:*:*:*:*:*
Yes cpe:2.3:o:linux:linux_kernel:6.8:rc2:*:*:*:*:*:*
Yes cpe:2.3:o:linux:linux_kernel:6.8:rc3:*:*:*:*:*:*

Operator: OR

Vulnerable CPE
Yes cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

References