FKIE_CVE-2025-38391

Vulnerability from fkie_nvd - Published: 2025-07-25 13:15 - Updated: 2025-12-23 19:28
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/114a977e0f6bf278e05eade055e13fc271f69cf7Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2f535517b5611b7221ed478527e4b58e29536ddfPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/45e9444b3b97eaf51a5024f1fea92f44f39b50c6Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/47cb5d26f61d80c805d7de4106451153779297a1Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5581e694d3a1c2f32c5a51d745c55b107644e1f8Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/621d5a3ef0231ab242f2d31eecec40c38ca609c5Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/af4db5a35a4ef7a68046883bfd12468007db38f1Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c93bc959788ed9a1af7df57cb539837bdf790ceePatch
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/10/msg00007.htmlThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/10/msg00008.htmlThird Party Advisory
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.16
linux linux_kernel 6.16
linux linux_kernel 6.16
linux linux_kernel 6.16
debian debian_linux 11.0
To clipboard 

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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: typec: altmodes/displayport: do not index invalid pin_assignments\n\nA poorly implemented DisplayPort Alt Mode port partner can indicate\nthat its pin assignment capabilities are greater than the maximum\nvalue, DP_PIN_ASSIGN_F. In this case, calls to pin_assignment_show\nwill cause a BRK exception due to an out of bounds array access.\n\nPrevent for loop in pin_assignment_show from accessing\ninvalid values in pin_assignments by adding DP_PIN_ASSIGN_MAX\nvalue in typec_dp.h and using i \u003c DP_PIN_ASSIGN_MAX as a loop\ncondition."
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      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: usb: typec: altmodes/displayport: no indexar asignaciones de pines no v\u00e1lidas. Un puerto asociado DisplayPort en modo alternativo mal implementado puede indicar que su capacidad de asignaci\u00f3n de pines supera el valor m\u00e1ximo, DP_PIN_ASSIGN_F. En este caso, las llamadas a pin_assignment_show provocar\u00e1n una excepci\u00f3n BRK debido a un acceso fuera de los l\u00edmites de la matriz. Para evitar que el bucle for de pin_assignment_show acceda a valores no v\u00e1lidos en las asignaciones de pines, agregue el valor DP_PIN_ASSIGN_MAX en typec_dp.h y use i \u0026lt; DP_PIN_ASSIGN_MAX como condici\u00f3n de bucle."
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  "id": "CVE-2025-38391",
  "lastModified": "2025-12-23T19:28:22.660",
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  "published": "2025-07-25T13:15:28.487",
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