CVE-2023-54299 (GCVE-0-2023-54299)
Vulnerability from cvelistv5
Published
2025-12-30 12:23
Modified
2025-12-30 12:23
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: usb: typec: bus: verify partner exists in typec_altmode_attention Some usb hubs will negotiate DisplayPort Alt mode with the device but will then negotiate a data role swap after entering the alt mode. The data role swap causes the device to unregister all alt modes, however the usb hub will still send Attention messages even after failing to reregister the Alt Mode. type_altmode_attention currently does not verify whether or not a device's altmode partner exists, which results in a NULL pointer error when dereferencing the typec_altmode and typec_altmode_ops belonging to the altmode partner. Verify the presence of a device's altmode partner before sending the Attention message to the Alt Mode driver.
References
Impacted products
Vendor Product Version
Linux Linux Version: 8a37d87d72f0c69f837229c04d2fcd7117ea57e7
Version: 8a37d87d72f0c69f837229c04d2fcd7117ea57e7
Version: 8a37d87d72f0c69f837229c04d2fcd7117ea57e7
Version: 8a37d87d72f0c69f837229c04d2fcd7117ea57e7
Version: 8a37d87d72f0c69f837229c04d2fcd7117ea57e7
Version: 8a37d87d72f0c69f837229c04d2fcd7117ea57e7
Version: 8a37d87d72f0c69f837229c04d2fcd7117ea57e7
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/usb/typec/bus.c",
            "drivers/usb/typec/tcpm/tcpm.c",
            "include/linux/usb/typec_altmode.h"
          ],
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          "programFiles": [
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            "drivers/usb/typec/tcpm/tcpm.c",
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "version": "0",
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              "version": "6.5.3",
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              "version": "6.6",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
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          "nodes": [
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              "negate": false,
              "operator": "OR"
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: typec: bus: verify partner exists in typec_altmode_attention\n\nSome usb hubs will negotiate DisplayPort Alt mode with the device\nbut will then negotiate a data role swap after entering the alt\nmode. The data role swap causes the device to unregister all alt\nmodes, however the usb hub will still send Attention messages\neven after failing to reregister the Alt Mode. type_altmode_attention\ncurrently does not verify whether or not a device\u0027s altmode partner\nexists, which results in a NULL pointer error when dereferencing\nthe typec_altmode and typec_altmode_ops belonging to the altmode\npartner.\n\nVerify the presence of a device\u0027s altmode partner before sending\nthe Attention message to the Alt Mode driver."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-30T12:23:35.146Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/5f71716772b88cbe0e1788f6a38d7871aff2120b"
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        {
          "url": "https://git.kernel.org/stable/c/38e1f2ee82bacbbfded8f1c06794a443d038d054"
        },
        {
          "url": "https://git.kernel.org/stable/c/0ad6bad31da692f8d7acacab07eabe7586239ae0"
        },
        {
          "url": "https://git.kernel.org/stable/c/0d3b5fe47938e9c451466845304a2bd74e967a80"
        },
        {
          "url": "https://git.kernel.org/stable/c/d49547950bf7f3480d6ca05fe055978e5f0d9e5b"
        },
        {
          "url": "https://git.kernel.org/stable/c/1101867a1711c27d8bbe0e83136bec47f8c1ca2a"
        },
        {
          "url": "https://git.kernel.org/stable/c/f23643306430f86e2f413ee2b986e0773e79da31"
        }
      ],
      "title": "usb: typec: bus: verify partner exists in typec_altmode_attention",
      "x_generator": {
        "engine": "bippy-1.2.0"
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  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-54299",
    "datePublished": "2025-12-30T12:23:35.146Z",
    "dateReserved": "2025-12-30T12:06:44.528Z",
    "dateUpdated": "2025-12-30T12:23:35.146Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2023-54299\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-12-30T13:16:19.010\",\"lastModified\":\"2025-12-31T20:42:43.210\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nusb: typec: bus: verify partner exists in typec_altmode_attention\\n\\nSome usb hubs will negotiate DisplayPort Alt mode with the device\\nbut will then negotiate a data role swap after entering the alt\\nmode. The data role swap causes the device to unregister all alt\\nmodes, however the usb hub will still send Attention messages\\neven after failing to reregister the Alt Mode. type_altmode_attention\\ncurrently does not verify whether or not a device\u0027s altmode partner\\nexists, which results in a NULL pointer error when dereferencing\\nthe typec_altmode and typec_altmode_ops belonging to the altmode\\npartner.\\n\\nVerify the presence of a device\u0027s altmode partner before sending\\nthe Attention message to the Alt Mode driver.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0ad6bad31da692f8d7acacab07eabe7586239ae0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/0d3b5fe47938e9c451466845304a2bd74e967a80\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/1101867a1711c27d8bbe0e83136bec47f8c1ca2a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/38e1f2ee82bacbbfded8f1c06794a443d038d054\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/5f71716772b88cbe0e1788f6a38d7871aff2120b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/d49547950bf7f3480d6ca05fe055978e5f0d9e5b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f23643306430f86e2f413ee2b986e0773e79da31\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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