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.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

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

No history.

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

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