// For flags

CVE-2024-35836

dpll: fix pin dump crash for rebound module

Severity Score

"-"
*CVSS v-

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track
*SSVC
Descriptions

In the Linux kernel, the following vulnerability has been resolved:

dpll: fix pin dump crash for rebound module

When a kernel module is unbound but the pin resources were not entirely
freed (other kernel module instance of the same PCI device have had kept
the reference to that pin), and kernel module is again bound, the pin
properties would not be updated (the properties are only assigned when
memory for the pin is allocated), prop pointer still points to the
kernel module memory of the kernel module which was deallocated on the
unbind.

If the pin dump is invoked in this state, the result is a kernel crash.
Prevent the crash by storing persistent pin properties in dpll subsystem,
copy the content from the kernel module when pin is allocated, instead of
using memory of the kernel module.

En el kernel de Linux, se resolvió la siguiente vulnerabilidad: dpll: corregido el fallo del volcado de pin para el módulo de rebote. Cuando un módulo del kernel está desatado pero los recursos del pin no se liberaron por completo (otra instancia del módulo del kernel del mismo dispositivo PCI ha mantenido la referencia a ese pin), y el módulo del kernel está nuevamente vinculado, las propiedades del pin no se actualizarán (las propiedades solo se asignan cuando se asigna memoria para el pin), el puntero de propiedad aún apunta a la memoria del módulo del kernel que fue desasignado en la desvinculación. Si se invoca el volcado de pines en este estado, el resultado es una fallo del kernel. Evite el bloqueo almacenando propiedades de pin persistentes en el subsistema dpll, copie el contenido del módulo del kernel cuando se asigna el pin, en lugar de usar la memoria del módulo del kernel.

*Credits: N/A
CVSS Scores
Attack Vector
-
Attack Complexity
-
Privileges Required
-
User Interaction
-
Scope
-
Confidentiality
-
Integrity
-
Availability
-
* Common Vulnerability Scoring System
SSVC
  • Decision:Track
Exploitation
None
Automatable
No
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2024-05-17 CVE Reserved
  • 2024-05-17 CVE Published
  • 2024-05-18 EPSS Updated
  • 2024-09-11 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Linux
Search vendor "Linux"
Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
>= 6.7 < 6.7.3
Search vendor "Linux" for product "Linux Kernel" and version " >= 6.7 < 6.7.3"
en
Affected
Linux
Search vendor "Linux"
Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
>= 6.7 < 6.8
Search vendor "Linux" for product "Linux Kernel" and version " >= 6.7 < 6.8"
en
Affected