// For flags

CVE-2024-35883

spi: mchp-pci1xxx: Fix a possible null pointer dereference in pci1xxx_spi_probe

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:

spi: mchp-pci1xxx: Fix a possible null pointer dereference in pci1xxx_spi_probe

In function pci1xxxx_spi_probe, there is a potential null pointer that
may be caused by a failed memory allocation by the function devm_kzalloc.
Hence, a null pointer check needs to be added to prevent null pointer
dereferencing later in the code.

To fix this issue, spi_bus->spi_int[iter] should be checked. The memory
allocated by devm_kzalloc will be automatically released, so just directly
return -ENOMEM without worrying about memory leaks.

En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: spi: mchp-pci1xxx: corrige una posible desreferencia de puntero null en pci1xxx_spi_probe En la función pci1xxxx_spi_probe, existe un posible puntero null que puede deberse a una asignación de memoria fallida por parte de la función devm_kzalloc. Por lo tanto, es necesario agregar una verificación de puntero null para evitar que se elimine la referencia al puntero null más adelante en el código. Para solucionar este problema, se debe marcar spi_bus->spi_int[iter]. La memoria asignada por devm_kzalloc se liberará automáticamente, por lo que simplemente devuelva -ENOMEM directamente sin preocuparse por pérdidas de memoria.

*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
  • 2024-05-19 CVE Published
  • 2024-05-20 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"
 >= 6.2 < 6.6.26
Search vendor "Linux" for product "Linux Kernel" and version " >= 6.2 < 6.6.26"
en
Affected
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 >= 6.2 < 6.8.5
Search vendor "Linux" for product "Linux Kernel" and version " >= 6.2 < 6.8.5"
en
Affected
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 >= 6.2 < 6.9
Search vendor "Linux" for product "Linux Kernel" and version " >= 6.2 < 6.9"
en
Affected