Bug 2367568 (CVE-2025-37967) - CVE-2025-37967 kernel: usb: typec: ucsi: displayport: Fix deadlock
Summary: CVE-2025-37967 kernel: usb: typec: ucsi: displayport: Fix deadlock
Keywords:
Status: NEW
Alias: CVE-2025-37967
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-05-20 17:01 UTC by OSIDB Bzimport
Modified: 2025-05-21 07:53 UTC (History)
4 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:


Attachments (Terms of Use)

Description OSIDB Bzimport 2025-05-20 17:01:16 UTC
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.

Comment 1 Avinash Hanwate 2025-05-21 07:06:11 UTC
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025052045-CVE-2025-37967-9dfe@gregkh/T

Comment 2 Avinash Hanwate 2025-05-21 07:46:43 UTC
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025052045-CVE-2025-37967-9dfe@gregkh/T


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