CVE-2023-53049

usb: ucsi: Fix NULL pointer deref in ucsi_connector_change()

Description

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.

N/A

CVSS

Severity:

EPSS 0.02%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/a6adfe9bbd6ac11e398b54ccd99a0f8eea09f3c0
https://git.kernel.org/stable/c/7dd27aed9c456670b3882877ef17a48195f21693
https://git.kernel.org/stable/c/1c5abcb13491da8c049f20462189c12c753ba978
https://git.kernel.org/stable/c/7ef0423e43f877a328454059d46763043ce3da44
https://git.kernel.org/stable/c/f87fb985452ab2083967103ac00bfd68fb182764

Frequently Asked Questions

What is the severity of CVE-2023-53049?: CVE-2023-53049 has not yet been assigned a CVSS score.
How to fix CVE-2023-53049?: To fix CVE-2023-53049, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-53049 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2023-53049 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-53049?: CVE-2023-53049 affects Linux Linux, Linux Linux.

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