// For flags

CVE-2021-42327

 

Severity Score

6.7
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

dp_link_settings_write in drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c in the Linux kernel through 5.14.14 allows a heap-based buffer overflow by an attacker who can write a string to the AMD GPU display drivers debug filesystem. There are no checks on size within parse_write_buffer_into_params when it uses the size of copy_from_user to copy a userspace buffer into a 40-byte heap buffer.

la función dp_link_settings_write en el archivo drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c en el kernel de Linux versiones hasta 5.14.14, permite un desbordamiento de búfer en la región heap de la memoria por parte de un atacante que puede escribir una cadena en el sistema de archivos de depuración de los controladores de la GPU AMD. No se presentan comprobaciones de tamaño dentro de parse_write_buffer_into_params cuando usa el tamaño de copy_from_user para copiar un buffer de espacio de usuario en un buffer de pila de 40 bytes

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Local
Attack Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-10-12 CVE Reserved
  • 2021-10-21 CVE Published
  • 2023-01-06 First Exploit
  • 2024-03-25 EPSS Updated
  • 2024-08-04 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-787: Out-of-bounds Write
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Netapp
Search vendor "Netapp"
 H300s Firmware
Search vendor "Netapp" for product "H300s Firmware"
--
Affected
in Netapp
Search vendor "Netapp"
 H300s
Search vendor "Netapp" for product "H300s"
--
Safe
Netapp
Search vendor "Netapp"
 H500s Firmware
Search vendor "Netapp" for product "H500s Firmware"
--
Affected
in Netapp
Search vendor "Netapp"
 H500s
Search vendor "Netapp" for product "H500s"
--
Safe
Netapp
Search vendor "Netapp"
 H700s Firmware
Search vendor "Netapp" for product "H700s Firmware"
--
Affected
in Netapp
Search vendor "Netapp"
 H700s
Search vendor "Netapp" for product "H700s"
--
Safe
Netapp
Search vendor "Netapp"
 H300e Firmware
Search vendor "Netapp" for product "H300e Firmware"
--
Affected
in Netapp
Search vendor "Netapp"
 H300e
Search vendor "Netapp" for product "H300e"
--
Safe
Netapp
Search vendor "Netapp"
 H500e Firmware
Search vendor "Netapp" for product "H500e Firmware"
--
Affected
in Netapp
Search vendor "Netapp"
 H500e
Search vendor "Netapp" for product "H500e"
--
Safe
Netapp
Search vendor "Netapp"
 H700e Firmware
Search vendor "Netapp" for product "H700e Firmware"
--
Affected
in Netapp
Search vendor "Netapp"
 H700e
Search vendor "Netapp" for product "H700e"
--
Safe
Netapp
Search vendor "Netapp"
 H410s Firmware
Search vendor "Netapp" for product "H410s Firmware"
--
Affected
in Netapp
Search vendor "Netapp"
 H410s
Search vendor "Netapp" for product "H410s"
--
Safe
Netapp
Search vendor "Netapp"
 H410c Firmware
Search vendor "Netapp" for product "H410c Firmware"
--
Affected
in Netapp
Search vendor "Netapp"
 H410c
Search vendor "Netapp" for product "H410c"
--
Safe
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 <= 5.14.14
Search vendor "Linux" for product "Linux Kernel" and version " <= 5.14.14"
-
Affected
Fedoraproject
Search vendor "Fedoraproject"
 Fedora
Search vendor "Fedoraproject" for product "Fedora"
 35
Search vendor "Fedoraproject" for product "Fedora" and version "35"
-
Affected