CVE-2022-49731

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2022-49731
In the Linux kernel, the following vulnerability has been resolved: ata: libata-core: fix NULL pointer deref in ata_host_alloc_pinfo() In an unlikely (and probably wrong?) case that the 'ppi' parameter of ata_host_alloc_pinfo() points to an array starting with a NULL pointer, there's going to be a kernel oops as the 'pi' local variable won't get reassigned from the initial value of NULL. Initialize 'pi' instead to '&ata_dummy_port_info' to fix the possible kernel oops for good... Found by Linux Verification Center (linuxtesting.org) with the SVACE static analysis tool.

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/07cbdb4807d369fbda73062a91b570c4dc5ec429 Patch
https://git.kernel.org/stable/c/1ac5efee33f29e704226506d429b84575a5d66f8 Patch
https://git.kernel.org/stable/c/253334f84c81bc6a43af489f108c0bddad989eef Patch
https://git.kernel.org/stable/c/36cd19e7d4e5571d77a2ed20c5b6ef50cf57734a Patch
https://git.kernel.org/stable/c/a810bd5af06977a847d1f202b22d7defd5c62497 Patch
https://git.kernel.org/stable/c/bf476fe22aa1851bab4728e0c49025a6a0bea307 Patch
https://git.kernel.org/stable/c/ca4693e6e06e4fd2b240c0fec47aa2498c94848e Patch
https://git.kernel.org/stable/c/ff128fbea720bf763fa345680dda5f050bc24a47 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:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.19:rc1:*:*:*:*:*:*
History

07 Mar 2025, 20:44

Type Values Removed Values Added
CWE CWE-476
First Time Linux linux Kernel
Linux
References () https://git.kernel.org/stable/c/07cbdb4807d369fbda73062a91b570c4dc5ec429 - () https://git.kernel.org/stable/c/07cbdb4807d369fbda73062a91b570c4dc5ec429 - Patch
References () https://git.kernel.org/stable/c/1ac5efee33f29e704226506d429b84575a5d66f8 - () https://git.kernel.org/stable/c/1ac5efee33f29e704226506d429b84575a5d66f8 - Patch
References () https://git.kernel.org/stable/c/253334f84c81bc6a43af489f108c0bddad989eef - () https://git.kernel.org/stable/c/253334f84c81bc6a43af489f108c0bddad989eef - Patch
References () https://git.kernel.org/stable/c/36cd19e7d4e5571d77a2ed20c5b6ef50cf57734a - () https://git.kernel.org/stable/c/36cd19e7d4e5571d77a2ed20c5b6ef50cf57734a - Patch
References () https://git.kernel.org/stable/c/a810bd5af06977a847d1f202b22d7defd5c62497 - () https://git.kernel.org/stable/c/a810bd5af06977a847d1f202b22d7defd5c62497 - Patch
References () https://git.kernel.org/stable/c/bf476fe22aa1851bab4728e0c49025a6a0bea307 - () https://git.kernel.org/stable/c/bf476fe22aa1851bab4728e0c49025a6a0bea307 - Patch
References () https://git.kernel.org/stable/c/ca4693e6e06e4fd2b240c0fec47aa2498c94848e - () https://git.kernel.org/stable/c/ca4693e6e06e4fd2b240c0fec47aa2498c94848e - Patch
References () https://git.kernel.org/stable/c/ff128fbea720bf763fa345680dda5f050bc24a47 - () https://git.kernel.org/stable/c/ff128fbea720bf763fa345680dda5f050bc24a47 - Patch
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.19:rc1:*:*:*:*:*:*
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ata: libata-core: fix NULL pointer deref in ata_host_alloc_pinfo() En un caso improbable (¿y probablemente erróneo?) de que el parámetro 'ppi' de ata_host_alloc_pinfo() apunte a una matriz que comience con un puntero NULL, habrá un error en el kernel ya que la variable local 'pi' no se reasignará desde el valor inicial de NULL. Inicialice 'pi' en su lugar a '&ata_dummy_port_info' para corregir el posible error en el kernel para siempre... Encontrado por Linux Verification Center (linuxtesting.org) con la herramienta de análisis estático SVACE.
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5

26 Feb 2025, 07:01

Type Values Removed Values Added
New CVE
Information

Published : 2025-02-26 07:01

Updated : 2025-03-07 20:44

NVD link : CVE-2022-49731

Mitre link : CVE-2022-49731

CVE.ORG link : CVE-2022-49731

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-476

NULL Pointer Dereference