CVE-2025-38404 Information

Jul 26, 2025 cve

Description

In the Linux kernel the following vulnerability has been resolved:

usb: typec: displayport: Fix potential deadlock

The deadlock can occur due to a recursive lock acquisition of cros_typec_altmode_data::mutex. The call chain is as follows:

  1. cros_typec_altmode_work() acquires the mutex
  2. typec_altmode_vdm() -> dp_altmode_vdm() ->
  3. typec_altmode_exit() -> cros_typec_altmode_exit()
  4. cros_typec_altmode_exit() attempts to acquire the mutex again

To prevent this defer the typec_altmode_exit() call by scheduling it rather than calling it directly from within the mutex-protected context.

Reference

https://git.kernel.org/stable/c/099cf1fbb8afc3771f408109f62bdec66f85160e https://git.kernel.org/stable/c/63cff9f57e86b2dc25d7487ca0118df89a665296 https://git.kernel.org/stable/c/749d9076735fb497aae60fbea9fff563f9ea3254 https://git.kernel.org/stable/c/76cf1f33e7319fe74c94ac92f9814094ee8cc84b https://git.kernel.org/stable/c/7be0d1ea71f52595499da39cea484a895e8ed042 https://git.kernel.org/stable/c/80c25d7916a44715338d4f8924c8e52af50d0b9f https://git.kernel.org/stable/c/c782f98eef14197affa8a7b91e6981420f109ea9 https://git.kernel.org/stable/c/eb08fca56f1f39e4038cb9bac9864464b13b00aa

CNNVD-202507-3234 (Published: 2025-07-25)

Share on: