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redhatcveRedhat.comRH:CVE-2024-35790
HistoryMay 17, 2024 - 10:23 p.m.

CVE-2024-35790

2024-05-1722:23:13
redhat.com
access.redhat.com
1
linux kernel
usb
displayport
vulnerability
resolved
sysfs nodes
attribute group
null pointer error
mitigation

6.5 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

15.5%

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.

6.5 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

15.5%