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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
0e3bb7d6894d9b6e67d6382bb03a46a1dc989588 to < 6b989ea1c479533ab8dbfbeb1704c94b1d3320daaffected0e3bb7d6894d9b6e67d6382bb03a46a1dc989588 to < 9794ffd9d0c39ee070fbd733f862bbe89b28ba33affected0e3bb7d6894d9b6e67d6382bb03a46a1dc989588 to < f1c5ddaef506e3517dce338c08a60663b1521920affected0e3bb7d6894d9b6e67d6382bb03a46a1dc989588 to < 4a22aeac24d0d5f26ba741408e8b5a4be6dc5dc0affected0e3bb7d6894d9b6e67d6382bb03a46a1dc989588 to < 0ad011776c057ce881b7fd6d8c79ecd459c087e9affected0e3bb7d6894d9b6e67d6382bb03a46a1dc989588 to < 165376f6b23e9a779850e750fb2eb06622e5a531affected
Linux Linux
Default version status: affected
4.19affected0 to < 4.19unaffected5.10.238 to ≤ 5.10.*unaffected5.15.184 to ≤ 5.15.*unaffected6.1.140 to ≤ 6.1.*unaffected6.6.24 to ≤ 6.6.*unaffected6.7.12 to ≤ 6.7.*unaffected6.8 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/6b989ea1c479533ab8dbfbeb1704c94b1d3320da ↗
- https://git.kernel.org/stable/c/9794ffd9d0c39ee070fbd733f862bbe89b28ba33 ↗
- https://git.kernel.org/stable/c/f1c5ddaef506e3517dce338c08a60663b1521920 ↗
- https://git.kernel.org/stable/c/4a22aeac24d0d5f26ba741408e8b5a4be6dc5dc0 ↗
- https://git.kernel.org/stable/c/0ad011776c057ce881b7fd6d8c79ecd459c087e9 ↗
- https://git.kernel.org/stable/c/165376f6b23e9a779850e750fb2eb06622e5a531 ↗
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html ↗
- https://lists.debian.org/debian-lts-announce/2025/08/msg00010.html ↗