HID: hyperv: validate initial device info bounds
Summary
| CVE | CVE-2026-80765 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-09-04 16:18:01 UTC |
| Updated | 2026-09-04 16:18:01 UTC |
| Description | 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. |
Risk And Classification
EPSS: 0.001950000 probability, percentile 0.092790000 (date 2026-09-07)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected b95f5bcb811e3905b5376f87789da8d097fee682 e0d5d3e45e142b7ef7525654aaa54d3e986002a6 git | Not specified |
| CNA | Linux | Linux | affected b95f5bcb811e3905b5376f87789da8d097fee682 390d3d9c52a710fdc9de95a537747397c0c671d1 git | Not specified |
| CNA | Linux | Linux | affected b95f5bcb811e3905b5376f87789da8d097fee682 8614c043b11cc35ffebd35542ab4da275f8f923d git | Not specified |
| CNA | Linux | Linux | affected b95f5bcb811e3905b5376f87789da8d097fee682 334271d3812ab3197c95b4593bc6745f8d189114 git | Not specified |
| CNA | Linux | Linux | affected b95f5bcb811e3905b5376f87789da8d097fee682 f84d777574b748b1a488723ca7be9d87a301a872 git | Not specified |
| CNA | Linux | Linux | affected b95f5bcb811e3905b5376f87789da8d097fee682 608f8fd8c0f7b6268da43509447802955f210aac git | Not specified |
| CNA | Linux | Linux | affected b95f5bcb811e3905b5376f87789da8d097fee682 2529737763cb4bcfcaf397beeea2664656c865b4 git | Not specified |
| CNA | Linux | Linux | affected b95f5bcb811e3905b5376f87789da8d097fee682 c894143c508a7e063aab9f73c9e835ab40121283 git | Not specified |
| CNA | Linux | Linux | affected b95f5bcb811e3905b5376f87789da8d097fee682 934b7778aa7b7c8f6bb073d2a73ba3674885bae0 git | Not specified |
| CNA | Linux | Linux | affected 3.3 | Not specified |
| CNA | Linux | Linux | unaffected 3.3 semver | Not specified |
| CNA | Linux | Linux | unaffected 5.10.267 5.10.* semver | Not specified |
| CNA | Linux | Linux | unaffected 5.15.218 5.15.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.185 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.154 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.106 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.47 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.1.11 7.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.2.1 7.2.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.3-rc1 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/608f8fd8c0f7b6268da43509447802955f210aac | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/390d3d9c52a710fdc9de95a537747397c0c671d1 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/c894143c508a7e063aab9f73c9e835ab40121283 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/934b7778aa7b7c8f6bb073d2a73ba3674885bae0 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/e0d5d3e45e142b7ef7525654aaa54d3e986002a6 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/f84d777574b748b1a488723ca7be9d87a301a872 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/334271d3812ab3197c95b4593bc6745f8d189114 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/8614c043b11cc35ffebd35542ab4da275f8f923d | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/2529737763cb4bcfcaf397beeea2664656c865b4 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.