CVE-2025-38391 (GCVE-0-2025-38391)

Vulnerability from cvelistv5 – Published: 2025-07-25 12:53 – Updated: 2026-05-11 21:27
VLAI?
Title
usb: typec: altmodes/displayport: do not index invalid pin_assignments
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 0e3bb7d6894d9b6e67d6382bb03a46a1dc989588 , < c93bc959788ed9a1af7df57cb539837bdf790cee (git)
Affected: 0e3bb7d6894d9b6e67d6382bb03a46a1dc989588 , < 114a977e0f6bf278e05eade055e13fc271f69cf7 (git)
Affected: 0e3bb7d6894d9b6e67d6382bb03a46a1dc989588 , < 621d5a3ef0231ab242f2d31eecec40c38ca609c5 (git)
Affected: 0e3bb7d6894d9b6e67d6382bb03a46a1dc989588 , < 2f535517b5611b7221ed478527e4b58e29536ddf (git)
Affected: 0e3bb7d6894d9b6e67d6382bb03a46a1dc989588 , < 45e9444b3b97eaf51a5024f1fea92f44f39b50c6 (git)
Affected: 0e3bb7d6894d9b6e67d6382bb03a46a1dc989588 , < 5581e694d3a1c2f32c5a51d745c55b107644e1f8 (git)
Affected: 0e3bb7d6894d9b6e67d6382bb03a46a1dc989588 , < 47cb5d26f61d80c805d7de4106451153779297a1 (git)
Affected: 0e3bb7d6894d9b6e67d6382bb03a46a1dc989588 , < af4db5a35a4ef7a68046883bfd12468007db38f1 (git)
Create a notification for this product.
Linux Linux Affected: 4.19
Unaffected: 0 , < 4.19 (semver)
Unaffected: 5.4.296 , ≤ 5.4.* (semver)
Unaffected: 5.10.240 , ≤ 5.10.* (semver)
Unaffected: 5.15.187 , ≤ 5.15.* (semver)
Unaffected: 6.1.144 , ≤ 6.1.* (semver)
Unaffected: 6.6.97 , ≤ 6.6.* (semver)
Unaffected: 6.12.37 , ≤ 6.12.* (semver)
Unaffected: 6.15.6 , ≤ 6.15.* (semver)
Unaffected: 6.16 , ≤ * (original_commit_for_fix)
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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.\"},{\"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. 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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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