Description
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: linux kernel; debian: debian linux
References7
- git.kernel.org/stable/c/364618c89d4c57c85e5fc51a2446cd939bf57802 Patch
- git.kernel.org/stable/c/5924b324468845fc795bd76f588f51d7ab4f202d Patch
- git.kernel.org/stable/c/61fc1a8e1e10cc784cab5829930838aaf1d37af5 Patch
- git.kernel.org/stable/c/962ce9028ca6eb450d5c205238a3ee27de9d214d Patch
- git.kernel.org/stable/c/f32451ca4cb7dc53f2a0e2e66b84d34162747eb7 Patch
- git.kernel.org/stable/c/f4bd982563c2fd41ec9ca6c517c392d759db801c Patch
- lists.debian.org/debian-lts-announce/2025/08/msg00010.html Third Party Advisory
Metrics
- CVSS 3.1
-
5.5
MEDIUM
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 0% percentile: 5 · as of 7 November 2026
- CWE
- CWE-667
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