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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
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
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)
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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. 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.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/usb/typec/altmodes/displayport.c\",\"include/linux/usb/typec_dp.h\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"0e3bb7d6894d9b6e67d6382bb03a46a1dc989588\",\"lessThan\":\"c93bc959788ed9a1af7df57cb539837bdf790cee\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0e3bb7d6894d9b6e67d6382bb03a46a1dc989588\",\"lessThan\":\"114a977e0f6bf278e05eade055e13fc271f69cf7\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0e3bb7d6894d9b6e67d6382bb03a46a1dc989588\",\"lessThan\":\"621d5a3ef0231ab242f2d31eecec40c38ca609c5\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0e3bb7d6894d9b6e67d6382bb03a46a1dc989588\",\"lessThan\":\"2f535517b5611b7221ed478527e4b58e29536ddf\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0e3bb7d6894d9b6e67d6382bb03a46a1dc989588\",\"lessThan\":\"45e9444b3b97eaf51a5024f1fea92f44f39b50c6\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0e3bb7d6894d9b6e67d6382bb03a46a1dc989588\",\"lessThan\":\"5581e694d3a1c2f32c5a51d745c55b107644e1f8\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0e3bb7d6894d9b6e67d6382bb03a46a1dc989588\",\"lessThan\":\"47cb5d26f61d80c805d7de4106451153779297a1\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0e3bb7d6894d9b6e67d6382bb03a46a1dc989588\",\"lessThan\":\"af4db5a35a4ef7a68046883bfd12468007db38f1\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/usb/typec/altmodes/displayport.c\",\"include/linux/usb/typec_dp.h\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"4.19\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"4.19\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.4.296\",\"lessThanOrEqual\":\"5.4.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.240\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.187\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.144\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.97\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.37\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.15.6\",\"lessThanOrEqual\":\"6.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.16\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-125\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.19\",\"versionEndExcluding\":\"5.4.296\",\"matchCriteriaId\":\"CFCB6FC6-B0DD-47C5-AA25-D1B2BFD03E5C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.240\",\"matchCriteriaId\":\"0E73A49A-F9B2-470F-91B2-6FAB6239BDB6\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.187\",\"matchCriteriaId\":\"4BD28D29-423C-4173-9DB8-3BA14E9F665D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.144\",\"matchCriteriaId\":\"81CF08DB-B7A2-4556-8AE3-ED9144F50E31\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.97\",\"matchCriteriaId\":\"EB1BB991-B903-4718-966C-07C803CBEABC\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.12.37\",\"matchCriteriaId\":\"6B4159AA-C70D-4DE5-9EE2-8F2728F13C5D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.13\",\"versionEndExcluding\":\"6.15.6\",\"matchCriteriaId\":\"6E0BB4E0-44BC-4645-83A8-6EA232CE624C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.16:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"6D4894DB-CCFE-4602-B1BF-3960B2E19A01\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.16:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"09709862-E348-4378-8632-5A7813EDDC86\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.16:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"415BF58A-8197-43F5-B3D7-D1D63057A26E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.16:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"A0517869-312D-4429-80C2-561086E1421C\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"FA6FEEC2-9F11-4643-8827-749718254FED\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/114a977e0f6bf278e05eade055e13fc271f69cf7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/2f535517b5611b7221ed478527e4b58e29536ddf\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/45e9444b3b97eaf51a5024f1fea92f44f39b50c6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/47cb5d26f61d80c805d7de4106451153779297a1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/5581e694d3a1c2f32c5a51d745c55b107644e1f8\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/621d5a3ef0231ab242f2d31eecec40c38ca609c5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/af4db5a35a4ef7a68046883bfd12468007db38f1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/c93bc959788ed9a1af7df57cb539837bdf790cee\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-30T01:05:14+00:00",
      "cve": "CVE-2025-38391",
      "id": "CVE-2025-38391",
      "initial_release_date": "2025-07-25T00:00:00+00:00",
      "product_status:known_affected": "260",
      "product_status:known_not_affected": "14",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: usb: typec: altmodes/displayport: do not index invalid pin_assignments",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-38391.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-12T16:48:59Z",
      "cve": "CVE-2025-38391",
      "id": "CVE-2025-38391",
      "initial_release_date": "2025-07-29T23:24:03Z",
      "product_status:first_fixed": "2",
      "product_status:known_affected": "643",
      "product_status:known_not_affected": "139",
      "product_status:recommended": "495",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2025-38391",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2025-38391.json",
      "version": "42"
    }
  }
}



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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.

Sightings

Author Source Type Date Other

Nomenclature

  • 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.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • 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.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.