CVE-2025-37967 usb: typec: ucsi: displayport: Fix deadlock

What is CVE-2025-37967?

CVE-2025-37967 is a medium-severity vulnerability in Debian Debian Linux, published on 20 May 2025. It can only be exploited from the same machine or local network, with no action from the victim.

Official 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.

Weakness: CWE-667

Which versions are affected by CVE-2025-37967?

It affects 2 products.

Products include Debian Debian Linux, Linux kernel.

How do I fix CVE-2025-37967?

Apply the vendor's patch.

Is CVE-2025-37967 being exploited?

There is no known exploitation of CVE-2025-37967 in the wild and no public exploit code.

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All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BELL-CVE-2025-37967, DEBIAN-CVE-2025-37967, GHSA-w939-6x76-94vc, ROOT-OS-DEBIAN-11-CVE-2025-37967, ROOT-OS-DEBIAN-12-CVE-2025-37967, ROOT-OS-UBUNTU-2204-CVE-2025-37967 and 2 more.