CVE-2024-35790

usb: typec: altmodes/displayport: create sysfs nodes as driver's default device attribute group

Description

In the Linux kernel, the following vulnerability has been resolved: usb: typec: altmodes/displayport: create sysfs nodes as driver's default device attribute group The DisplayPort driver's sysfs nodes may be present to the userspace before typec_altmode_set_drvdata() completes in dp_altmode_probe. This means that a sysfs read can trigger a NULL pointer error by deferencing dp->hpd in hpd_show or dp->lock in pin_assignment_show, as dev_get_drvdata() returns NULL in those cases. Remove manual sysfs node creation in favor of adding attribute group as default for devices bound to the driver. The ATTRIBUTE_GROUPS() macro is not used here otherwise the path to the sysfs nodes is no longer compliant with the ABI.

Category

5.5
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.04%
Affected: Linux Linux
Affected: Linux Linux
Published at:
Updated at:

References

Link Tags
https://git.kernel.org/stable/c/9794ffd9d0c39ee070fbd733f862bbe89b28ba33
https://git.kernel.org/stable/c/f1c5ddaef506e3517dce338c08a60663b1521920
https://git.kernel.org/stable/c/4a22aeac24d0d5f26ba741408e8b5a4be6dc5dc0 patch mailing list
https://git.kernel.org/stable/c/0ad011776c057ce881b7fd6d8c79ecd459c087e9 patch mailing list
https://git.kernel.org/stable/c/165376f6b23e9a779850e750fb2eb06622e5a531 patch mailing list

Frequently Asked Questions

What is the severity of CVE-2024-35790?
CVE-2024-35790 has been scored as a medium severity vulnerability.
How to fix CVE-2024-35790?
To fix CVE-2024-35790, 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-2024-35790 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2024-35790 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-2024-35790?
CVE-2024-35790 affects Linux Linux, Linux Linux.
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