CVE-2026-46073 (GCVE-0-2026-46073)

Vulnerability from cvelistv5 – Published: 2026-05-27 12:58 – Updated: 2026-05-27 12:58
VLAI
Title
hwmon: (powerz) Fix missing usb_kill_urb() on signal interrupt
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.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 4381a36abdf1c5c0323c1c51f869dc000115eb20 , < 8b51277eec433d4e724b273a5a5c64e8acfbe405 (git)
Affected: 4381a36abdf1c5c0323c1c51f869dc000115eb20 , < b6cb07f02253bdefd2339e57eaa1428a7b28cd0f (git)
Affected: 4381a36abdf1c5c0323c1c51f869dc000115eb20 , < d64458784036f5818e22781254b6be299d52a19c (git)
Affected: 4381a36abdf1c5c0323c1c51f869dc000115eb20 , < b66437cb20a2d9ef201f40b675569f8ea7787c9f (git)
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Linux Linux Affected: 6.7
Unaffected: 0 , < 6.7 (semver)
Unaffected: 6.12.86 , ≤ 6.12.* (semver)
Unaffected: 6.18.27 , ≤ 6.18.* (semver)
Unaffected: 7.0.4 , ≤ 7.0.* (semver)
Unaffected: 7.1-rc1 , ≤ * (original_commit_for_fix)
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{
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          "programFiles": [
            "drivers/hwmon/powerz.c"
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          "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."
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        "dateUpdated": "2026-05-27T12:58:01.478Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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    "cveId": "CVE-2026-46073",
    "datePublished": "2026-05-27T12:58:01.478Z",
    "dateReserved": "2026-05-13T15:03:33.095Z",
    "dateUpdated": "2026-05-27T12:58:01.478Z",
    "state": "PUBLISHED"
  },
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  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-46073",
      "date": "2026-05-29",
      "epss": "0.00018",
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    "nvd": "{\"cve\":{\"id\":\"CVE-2026-46073\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-05-27T14:17:28.607\",\"lastModified\":\"2026-05-27T14:48:03.013\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"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.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/8b51277eec433d4e724b273a5a5c64e8acfbe405\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b66437cb20a2d9ef201f40b675569f8ea7787c9f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b6cb07f02253bdefd2339e57eaa1428a7b28cd0f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/d64458784036f5818e22781254b6be299d52a19c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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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

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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.