CVE-2026-46073 (GCVE-0-2026-46073)
Vulnerability from cvelistv5
Published
2026-05-27 12:58
Modified
2026-06-14 17:52
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: hwmon: (powerz) Fix missing usb_kill_urb() on signal interrupt wait_for_completion_interruptible_timeout() returns -ERESTARTSYS when interrupted. This needs to abort the URB and return an error. No data has been received from the device so any reads from the transfer buffer are invalid. The original code tests !ret, which only catches the timeout case (0). On signal delivery (-ERESTARTSYS), !ret is false so the function skips usb_kill_urb() and falls through to read from the unfilled transfer buffer. Fix by capturing the return value into a long (matching the function return type) and handling signal (negative) and timeout (zero) cases with separate checks that both call usb_kill_urb() before returning.
References
Impacted products
Vendor Product Version
Linux Linux Version: 4381a36abdf1c5c0323c1c51f869dc000115eb20
Version: 4381a36abdf1c5c0323c1c51f869dc000115eb20
Version: 4381a36abdf1c5c0323c1c51f869dc000115eb20
Version: 4381a36abdf1c5c0323c1c51f869dc000115eb20
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/hwmon/powerz.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "lessThan": "8b51277eec433d4e724b273a5a5c64e8acfbe405",
              "status": "affected",
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        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.7"
            },
            {
              "lessThan": "6.7",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.86",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.27",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.4",
              "versionType": "semver"
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              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
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        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.86",
                  "versionStartIncluding": "6.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.27",
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                },
                {
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                {
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              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: (powerz) Fix missing usb_kill_urb() on signal interrupt\n\nwait_for_completion_interruptible_timeout() returns -ERESTARTSYS when\ninterrupted. This needs to abort the URB and return an error. No data\nhas been received from the device so any reads from the transfer\nbuffer are invalid.\n\nThe original code tests !ret, which only catches the timeout case (0).\nOn signal delivery (-ERESTARTSYS), !ret is false so the function skips\nusb_kill_urb() and falls through to read from the unfilled transfer\nbuffer.\n\nFix by capturing the return value into a long (matching the function\nreturn type) and handling signal (negative) and timeout (zero) cases\nwith separate checks that both call usb_kill_urb() before returning."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-14T17:52:19.817Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/8b51277eec433d4e724b273a5a5c64e8acfbe405"
        },
        {
          "url": "https://git.kernel.org/stable/c/b6cb07f02253bdefd2339e57eaa1428a7b28cd0f"
        },
        {
          "url": "https://git.kernel.org/stable/c/d64458784036f5818e22781254b6be299d52a19c"
        },
        {
          "url": "https://git.kernel.org/stable/c/b66437cb20a2d9ef201f40b675569f8ea7787c9f"
        }
      ],
      "title": "hwmon: (powerz) Fix missing usb_kill_urb() on signal interrupt",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-46073",
    "datePublished": "2026-05-27T12:58:01.478Z",
    "dateReserved": "2026-05-13T15:03:33.095Z",
    "dateUpdated": "2026-06-14T17:52:19.817Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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