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.
References (8)
Core 8
Core References
Mailing List, Patch
https://git.kernel.org/stable/c/4a22aeac24d0d5f26ba741408e8b5a4be6dc5dc0
Mailing List, Patch
https://git.kernel.org/stable/c/0ad011776c057ce881b7fd6d8c79ecd459c087e9
Mailing List, Patch
https://git.kernel.org/stable/c/165376f6b23e9a779850e750fb2eb06622e5a531
Scores
CVSS v3
5.5
EPSS
0.0022
EPSS Percentile
13.1%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-476
Status
published
Products (21)
linux/Kernel
4.19.0 - 5.10.238linux
linux/Kernel
5.11.0 - 5.15.184linux
linux/Kernel
5.16.0 - 6.1.140linux
linux/Kernel
6.2.0 - 6.6.24linux
linux/Kernel
6.7.0 - 6.7.12linux
Linux/Linux
< 4.19
Linux/Linux
0e3bb7d6894d9b6e67d6382bb03a46a1dc989588 - 0ad011776c057ce881b7fd6d8c79ecd459c087e9
Linux/Linux
0e3bb7d6894d9b6e67d6382bb03a46a1dc989588 - 165376f6b23e9a779850e750fb2eb06622e5a531
Linux/Linux
0e3bb7d6894d9b6e67d6382bb03a46a1dc989588 - 4a22aeac24d0d5f26ba741408e8b5a4be6dc5dc0
Linux/Linux
0e3bb7d6894d9b6e67d6382bb03a46a1dc989588 - 6b989ea1c479533ab8dbfbeb1704c94b1d3320da
... and 11 more
Published
May 17, 2024
Tracked Since
Feb 18, 2026