CVE-2025-38391

Published: July 26, 2025Last modified: July 26, 2025

Description

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.

Status

References

• https://git.kernel.org/stable/c/114a977e0f6bf278e05eade055e13fc271f69cf7
• https://git.kernel.org/stable/c/2f535517b5611b7221ed478527e4b58e29536ddf
• https://git.kernel.org/stable/c/45e9444b3b97eaf51a5024f1fea92f44f39b50c6
• https://git.kernel.org/stable/c/47cb5d26f61d80c805d7de4106451153779297a1
• https://git.kernel.org/stable/c/5581e694d3a1c2f32c5a51d745c55b107644e1f8
• https://git.kernel.org/stable/c/621d5a3ef0231ab242f2d31eecec40c38ca609c5
• https://git.kernel.org/stable/c/af4db5a35a4ef7a68046883bfd12468007db38f1
• https://git.kernel.org/stable/c/c93bc959788ed9a1af7df57cb539837bdf790cee