CVE-2025-38391: Debian Linux

Medium severity, CVSS 5.5. EPSS: 0.2% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: usb: typec: altmodes/displayport: do not index invalid pin_assignments A poorly implemented DisplayPort Alt Mode port partner can indicate that its pin assignment capabilities are greater than the maximum value, DP_PIN_ASSIGN_F. In this case, calls to pin_assignment_show will cause a BRK exception due to an out of bounds array access. Prevent for loop in pin_assignment_show from accessing invalid values in pin_assignments by adding DP_PIN_ASSIGN_MAX value in typec_dp.h and using i < DP_PIN_ASSIGN_MAX as a loop condition.

Affected products

• Debian Debian Linux: version 11.0 only
• Linux Linux Kernel: from 4.19, before 5.4.296 (fixed in 5.4.296); from 5.5, before 5.10.240 (fixed in 5.10.240); from 5.11, before 5.15.187 (fixed in 5.15.187); from 5.16, before 6.1.144 (fixed in 6.1.144); from 6.2, before 6.6.97 (fixed in 6.6.97); from 6.7, before 6.12.37 (fixed in 6.12.37); …

Published 2025-07-25. Last modified 2026-06-17.