CVE-2026-80765HID: hyperv: validate initial device info bounds
- —Not scoredno CVSS score yet
- 0.19%Exploitation in 30 daysEPSS · top 91% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By Linux
- 9 days later
· 9 days later
Published
- 2 months later
· 2 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Received.
- EPSS (exploitation in 30 days)
- 0.19% · top 91% of all CVEs (13 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected b95f5bcb811e3905b5376f87789da8d097fee682 – < e0d5d3e45e142b7ef7525654aaa54d3e986002a6
- affected b95f5bcb811e3905b5376f87789da8d097fee682 – < 390d3d9c52a710fdc9de95a537747397c0c671d1
- affected b95f5bcb811e3905b5376f87789da8d097fee682 – < 8614c043b11cc35ffebd35542ab4da275f8f923d
- affected b95f5bcb811e3905b5376f87789da8d097fee682 – < 334271d3812ab3197c95b4593bc6745f8d189114
- affected b95f5bcb811e3905b5376f87789da8d097fee682 – < f84d777574b748b1a488723ca7be9d87a301a872
- affected b95f5bcb811e3905b5376f87789da8d097fee682 – < 608f8fd8c0f7b6268da43509447802955f210aac
- affected b95f5bcb811e3905b5376f87789da8d097fee682 – < 2529737763cb4bcfcaf397beeea2664656c865b4
- affected b95f5bcb811e3905b5376f87789da8d097fee682 – < c894143c508a7e063aab9f73c9e835ab40121283
- affected b95f5bcb811e3905b5376f87789da8d097fee682 – < 934b7778aa7b7c8f6bb073d2a73ba3674885bae0
- affected 3.3
- unaffected < 3.3
- unaffected 5.10.267 – ≤ 5.10.*
- unaffected 5.15.218 – ≤ 5.15.*
- unaffected 6.1.185 – ≤ 6.1.*
- unaffected 6.6.154 – ≤ 6.6.*
- unaffected 6.12.106 – ≤ 6.12.*
- unaffected 6.18.47 – ≤ 6.18.*
- unaffected 7.1.11 – ≤ 7.1.*
- unaffected 7.2.1 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References9
- https://git.kernel.org/stable/c/e0d5d3e45e142b7ef7525654aaa54d3e986002a6 (opens in a new tab)
- https://git.kernel.org/stable/c/390d3d9c52a710fdc9de95a537747397c0c671d1 (opens in a new tab)
- https://git.kernel.org/stable/c/8614c043b11cc35ffebd35542ab4da275f8f923d (opens in a new tab)
- https://git.kernel.org/stable/c/334271d3812ab3197c95b4593bc6745f8d189114 (opens in a new tab)
- https://git.kernel.org/stable/c/f84d777574b748b1a488723ca7be9d87a301a872 (opens in a new tab)
- https://git.kernel.org/stable/c/608f8fd8c0f7b6268da43509447802955f210aac (opens in a new tab)
- https://git.kernel.org/stable/c/2529737763cb4bcfcaf397beeea2664656c865b4 (opens in a new tab)
- https://git.kernel.org/stable/c/c894143c508a7e063aab9f73c9e835ab40121283 (opens in a new tab)
- https://git.kernel.org/stable/c/934b7778aa7b7c8f6bb073d2a73ba3674885bae0 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-71408 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-80765)Record last updated .