In the Linux kernel, the following vulnerability has been resolved: HID: hyperv: validate...
🔗 CVE IDs covered (1)
📋 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.
🔗 References (11)
- https://nvd.nist.gov/vuln/detail/CVE-2026-80765
- https://git.kernel.org/stable/c/2529737763cb4bcfcaf397beeea2664656c865b4
- https://git.kernel.org/stable/c/334271d3812ab3197c95b4593bc6745f8d189114
- https://git.kernel.org/stable/c/390d3d9c52a710fdc9de95a537747397c0c671d1
- https://git.kernel.org/stable/c/608f8fd8c0f7b6268da43509447802955f210aac
- https://git.kernel.org/stable/c/8614c043b11cc35ffebd35542ab4da275f8f923d
- https://git.kernel.org/stable/c/934b7778aa7b7c8f6bb073d2a73ba3674885bae0
- https://git.kernel.org/stable/c/c894143c508a7e063aab9f73c9e835ab40121283
- https://git.kernel.org/stable/c/e0d5d3e45e142b7ef7525654aaa54d3e986002a6
- https://git.kernel.org/stable/c/f84d777574b748b1a488723ca7be9d87a301a872
- https://github.com/advisories/GHSA-cj68-x55r-245c