CVE-2026-80765

CVE CVE-2026-80765EUVD EUVD-2026-71408Published 2026-09-04T15:12:37.000Z

What the advisory describes

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.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux patch: 5.15.218; b95f5bcb811e3905b5376f87789da8d097fee682 <334271d3812ab3197c95b4593bc6745f8d189114; b95f5bcb811e3905b5376f87789da8d097fee682 <c894143c508a7e063aab9f73c9e835ab40121283; b95f5bcb811e3905b5376f87789da8d097fee682 <934b7778aa7b7c8f6bb073d2a73ba3674885bae0; b95f5bcb811e3905b5376f87789da8d097fee682 <e0d5d3e45e142b7ef7525654aaa54d3e986002a6; b95f5bcb811e3905b5376f87789da8d097fee682 <f84d777574b748b1a488723ca7be9d87a301a872; 3.3; patch: 6.18.47; patch: 6.6.154; patch: 7.3-rc1; patch: 6.12.106; patch: 7.2.1; patch: 6.1.185; b95f5bcb811e3905b5376f87789da8d097fee682 <390d3d9c52a710fdc9de95a537747397c0c671d1; patch: 7.1.11; b95f5bcb811e3905b5376f87789da8d097fee682 <8614c043b11cc35ffebd35542ab4da275f8f923d; b95f5bcb811e3905b5376f87789da8d097fee682 <2529737763cb4bcfcaf397beeea2664656c865b4; b95f5bcb811e3905b5376f87789da8d097fee682 <608f8fd8c0f7b6268da43509447802955f210aac; patch: 5.10.267; patch: 0

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.

Linux — Linux

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