CVE-2026-43428 (GCVE-0-2026-43428)
Vulnerability from cvelistv5
Published
2026-05-08 14:22
Modified
2026-05-11 22:24
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: USB: core: Limit the length of unkillable synchronous timeouts The usb_control_msg(), usb_bulk_msg(), and usb_interrupt_msg() APIs in usbcore allow unlimited timeout durations. And since they use uninterruptible waits, this leaves open the possibility of hanging a task for an indefinitely long time, with no way to kill it short of unplugging the target device. To prevent this sort of problem, enforce a maximum limit on the length of these unkillable timeouts. The limit chosen here, somewhat arbitrarily, is 60 seconds. On many systems (although not all) this is short enough to avoid triggering the kernel's hung-task detector. In addition, clear up the ambiguity of negative timeout values by treating them the same as 0, i.e., using the maximum allowed timeout.
References
Impacted products
Vendor Product Version
Linux Linux Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/usb/core/message.c",
            "include/linux/usb.h"
          ],
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          "vendor": "Linux",
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        },
        {
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          "product": "Linux",
          "programFiles": [
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            "include/linux/usb.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.12"
            },
            {
              "lessThan": "2.6.12",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.253",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.203",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.167",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
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              "versionType": "semver"
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              "versionType": "semver"
            },
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              "lessThanOrEqual": "6.18.*",
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              "version": "6.19.9",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "versionEndExcluding": "7.0",
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                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nUSB: core: Limit the length of unkillable synchronous timeouts\n\nThe usb_control_msg(), usb_bulk_msg(), and usb_interrupt_msg() APIs in\nusbcore allow unlimited timeout durations.  And since they use\nuninterruptible waits, this leaves open the possibility of hanging a\ntask for an indefinitely long time, with no way to kill it short of\nunplugging the target device.\n\nTo prevent this sort of problem, enforce a maximum limit on the length\nof these unkillable timeouts.  The limit chosen here, somewhat\narbitrarily, is 60 seconds.  On many systems (although not all) this\nis short enough to avoid triggering the kernel\u0027s hung-task detector.\n\nIn addition, clear up the ambiguity of negative timeout values by\ntreating them the same as 0, i.e., using the maximum allowed timeout."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T22:24:24.020Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/4e86f5b79e62ded7e3c3ebd688cf5775e618148a"
        },
        {
          "url": "https://git.kernel.org/stable/c/06d2bbc4c66c6b0e8a43728c4949026026a5be67"
        },
        {
          "url": "https://git.kernel.org/stable/c/6c62935670acdbb7687ced20494923b66fbb0367"
        },
        {
          "url": "https://git.kernel.org/stable/c/659c0c7d50a4b0f6aa197c4c098cfd91daf63862"
        },
        {
          "url": "https://git.kernel.org/stable/c/24b31a227f679a942d820840a4dea7f0c09a387f"
        },
        {
          "url": "https://git.kernel.org/stable/c/64f3d75633aedc12bdff220e9a4337177430bd9d"
        },
        {
          "url": "https://git.kernel.org/stable/c/2d34cb4d1d6283b4be9c78f4a83ed6956d3069ec"
        },
        {
          "url": "https://git.kernel.org/stable/c/1015c27a5e1a63efae2b18a9901494474b4d1dc3"
        }
      ],
      "title": "USB: core: Limit the length of unkillable synchronous timeouts",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-43428",
    "datePublished": "2026-05-08T14:22:01.027Z",
    "dateReserved": "2026-05-01T14:12:56.009Z",
    "dateUpdated": "2026-05-11T22:24:24.020Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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