CVE-2022-49962

xhci: Fix null pointer dereference in remove if xHC has only one roothub

Description

In the Linux kernel, the following vulnerability has been resolved: xhci: Fix null pointer dereference in remove if xHC has only one roothub The remove path in xhci platform driver tries to remove and put both main and shared hcds even if only a main hcd exists (one roothub) This causes a null pointer dereference in reboot for those controllers. Check that the shared_hcd exists before trying to remove it.

N/A

CVSS

Severity:

EPSS 0.02%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/7081b2f34ff291ada012bd6abacaf7d51c4cf73f
https://git.kernel.org/stable/c/4a593a62a9e3a25ab4bc37f612e4edec144f7f43

Frequently Asked Questions

What is the severity of CVE-2022-49962?: CVE-2022-49962 has not yet been assigned a CVSS score.
How to fix CVE-2022-49962?: To fix CVE-2022-49962, 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-2022-49962 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2022-49962 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-2022-49962?: CVE-2022-49962 affects Linux Linux, Linux Linux.

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