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HID: hyperv: validate initial device info bounds

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: HID: hyperv: validate initial device info bounds The Hyper-V synthetic HID host supplies SYNTH_HID_INITIAL_DEVICE_INFO messages that contain a HID descriptor followed by the report descriptor bytes. mousevsc_on_receive_device_info() trusts bLength and wDescriptorLength without checking that the received packet contains both byte ranges. A malformed host or backend message can therefore make the guest read past the received VMBus packet while copying the report descriptor. Pass the received initial-device-info size into the parser and reject descriptor lengths that exceed the packet. Impact: A malicious Hyper-V host or backend can crash a guest by sending a short initial device-info message with an oversized HID report descriptor length.

Announced Group revision 1
Original source ↗

CVE-2026-80765

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-80765

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "b95f5bcb811e3905b5376f87789da8d097fee682",
        "lessThan": "e0d5d3e45e142b7ef7525654aaa54d3e986002a6",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "b95f5bcb811e3905b5376f87789da8d097fee682",
        "lessThan": "390d3d9c52a710fdc9de95a537747397c0c671d1",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "b95f5bcb811e3905b5376f87789da8d097fee682",
        "lessThan": "8614c043b11cc35ffebd35542ab4da275f8f923d",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "b95f5bcb811e3905b5376f87789da8d097fee682",
        "lessThan": "334271d3812ab3197c95b4593bc6745f8d189114",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "b95f5bcb811e3905b5376f87789da8d097fee682",
        "lessThan": "f84d777574b748b1a488723ca7be9d87a301a872",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "b95f5bcb811e3905b5376f87789da8d097fee682",
        "lessThan": "608f8fd8c0f7b6268da43509447802955f210aac",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "b95f5bcb811e3905b5376f87789da8d097fee682",
        "lessThan": "2529737763cb4bcfcaf397beeea2664656c865b4",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "b95f5bcb811e3905b5376f87789da8d097fee682",
        "lessThan": "c894143c508a7e063aab9f73c9e835ab40121283",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "b95f5bcb811e3905b5376f87789da8d097fee682",
        "lessThan": "934b7778aa7b7c8f6bb073d2a73ba3674885bae0",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/hid/hid-hyperv.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "3.3"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "3.3",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.267",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.218",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.185",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.154",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.106",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.47",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.1.11",
        "versionType": "semver",
        "lessThanOrEqual": "7.1.*"
      },
      {
        "status": "unaffected",
        "version": "7.2.1",
        "versionType": "semver",
        "lessThanOrEqual": "7.2.*"
      },
      {
        "status": "unaffected",
        "version": "7.3",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/hid/hid-hyperv.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-80765

Source reference: /cveMetadata/cveId

Publisher severity

No explicit severity was provided.

Event
#34783 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement

Revision history

  1. CVE-2026-80765 · Revision 1Source updated