CVE-2024-26716

usb: core: Prevent null pointer dereference in update_port_device_state

Description

In the Linux kernel, the following vulnerability has been resolved: usb: core: Prevent null pointer dereference in update_port_device_state Currently, the function update_port_device_state gets the usb_hub from udev->parent by calling usb_hub_to_struct_hub. However, in case the actconfig or the maxchild is 0, the usb_hub would be NULL and upon further accessing to get port_dev would result in null pointer dereference. Fix this by introducing an if check after the usb_hub is populated.

Category

5.5
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.01%
Affected: Linux Linux
Affected: Linux Linux
Published at:
Updated at:

References

Link Tags
https://git.kernel.org/stable/c/ed85777c640cf9e6920bb1b60ed8cd48e1f4d873 patch
https://git.kernel.org/stable/c/465b545d1d7ef282192ddd4439b08279bdb13f6f patch
https://git.kernel.org/stable/c/12783c0b9e2c7915a50d5ec829630ff2da50472c patch

Frequently Asked Questions

What is the severity of CVE-2024-26716?
CVE-2024-26716 has been scored as a medium severity vulnerability.
How to fix CVE-2024-26716?
To fix CVE-2024-26716, 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-2024-26716 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2024-26716 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-2024-26716?
CVE-2024-26716 affects Linux Linux, Linux Linux.
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