CVE-2023-53049

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2023-53049
In the Linux kernel, the following vulnerability has been resolved: usb: ucsi: Fix NULL pointer deref in ucsi_connector_change() When ucsi_init() fails, ucsi->connector is NULL, yet in case of ucsi_acpi we may still get events which cause the ucs_acpi code to call ucsi_connector_change(), which then derefs the NULL ucsi->connector pointer. Fix this by not setting ucsi->ntfy inside ucsi_init() until ucsi_init() has succeeded, so that ucsi_connector_change() ignores the events because UCSI_ENABLE_NTFY_CONNECTOR_CHANGE is not set in the ntfy mask.

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/1c5abcb13491da8c049f20462189c12c753ba978 Patch
https://git.kernel.org/stable/c/7dd27aed9c456670b3882877ef17a48195f21693 Patch
https://git.kernel.org/stable/c/7ef0423e43f877a328454059d46763043ce3da44 Patch
https://git.kernel.org/stable/c/a6adfe9bbd6ac11e398b54ccd99a0f8eea09f3c0 Patch
https://git.kernel.org/stable/c/f87fb985452ab2083967103ac00bfd68fb182764 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:6.3:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.3:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.3:rc3:*:*:*:*:*:*
History

12 Nov 2025, 18:34

Type Values Removed Values Added
CPE cpe:2.3:o:linux:linux_kernel:6.3:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.3:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.3:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
First Time Linux
Linux linux Kernel
CWE CWE-476
References () https://git.kernel.org/stable/c/1c5abcb13491da8c049f20462189c12c753ba978 - () https://git.kernel.org/stable/c/1c5abcb13491da8c049f20462189c12c753ba978 - Patch
References () https://git.kernel.org/stable/c/7dd27aed9c456670b3882877ef17a48195f21693 - () https://git.kernel.org/stable/c/7dd27aed9c456670b3882877ef17a48195f21693 - Patch
References () https://git.kernel.org/stable/c/7ef0423e43f877a328454059d46763043ce3da44 - () https://git.kernel.org/stable/c/7ef0423e43f877a328454059d46763043ce3da44 - Patch
References () https://git.kernel.org/stable/c/a6adfe9bbd6ac11e398b54ccd99a0f8eea09f3c0 - () https://git.kernel.org/stable/c/a6adfe9bbd6ac11e398b54ccd99a0f8eea09f3c0 - Patch
References () https://git.kernel.org/stable/c/f87fb985452ab2083967103ac00bfd68fb182764 - () https://git.kernel.org/stable/c/f87fb985452ab2083967103ac00bfd68fb182764 - Patch

05 May 2025, 20:54

Type Values Removed Values Added
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: usb: ucsi: Se corrige la desreferencia del puntero nulo en ucsi_connector_change(). Cuando ucsi_init() falla, ucsi->connector es nulo; sin embargo, en el caso de ucsi_acpi, aún pueden aparecer eventos que provocan que el código ucs_acpi llame a ucsi_connector_change(), que a su vez desreferencia el puntero nulo ucsi->connector. Para solucionar esto, no configure ucsi->ntfy dentro de ucsi_init() hasta que ucsi_init() se haya ejecutado correctamente, de modo que ucsi_connector_change() ignore los eventos, ya que UCSI_ENABLE_NTFY_CONNECTOR_CHANGE no está configurado en la máscara ntfy.

02 May 2025, 16:15

Type Values Removed Values Added
New CVE
Information

Published : 2025-05-02 16:15

Updated : 2025-11-12 18:34

NVD link : CVE-2023-53049

Mitre link : CVE-2023-53049

CVE.ORG link : CVE-2023-53049

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-476

NULL Pointer Dereference