usb: typec: ucsi: displayport: Fix deadlock
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 0.1%
exploitation probability
0.1%top 98% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved:
usb: typec: ucsi: displayport: Fix deadlock
This patch introduces the ucsi_con_mutex_lock / ucsi_con_mutex_unlock
functions to the UCSI driver. ucsi_con_mutex_lock ensures the connector
mutex is only locked if a connection is established and the partner pointer
is valid. This resolves a deadlock scenario where
ucsi_displayport_remove_partner holds con->mutex waiting for
dp_altmode_work to complete while dp_altmode_work attempts to acquire it.
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/364618c89d4c57c85e5fc51a2446cd939bf57802https://git.kernel.org/stable/c/5924b324468845fc795bd76f588f51d7ab4f202dhttps://git.kernel.org/stable/c/61fc1a8e1e10cc784cab5829930838aaf1d37af5https://git.kernel.org/stable/c/962ce9028ca6eb450d5c205238a3ee27de9d214dhttps://git.kernel.org/stable/c/f32451ca4cb7dc53f2a0e2e66b84d34162747eb7https://git.kernel.org/stable/c/f4bd982563c2fd41ec9ca6c517c392d759db801chttps://lists.debian.org/debian-lts-announce/2025/08/msg00010.html