{"api_version":"1","generated_at":"2026-10-03T10:14:43+00:00","cve":"CVE-2026-80765","urls":{"html":"https://cve.report/CVE-2026-80765","api":"https://cve.report/api/cve/CVE-2026-80765.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-80765","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-80765"},"summary":{"title":"HID: hyperv: validate initial device info bounds","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nHID: hyperv: validate initial device info bounds\n\nThe Hyper-V synthetic HID host supplies SYNTH_HID_INITIAL_DEVICE_INFO\nmessages that contain a HID descriptor followed by the report descriptor\nbytes. mousevsc_on_receive_device_info() trusts bLength and\nwDescriptorLength without checking that the received packet contains both\nbyte ranges.\n\nA malformed host or backend message can therefore make the guest read\npast the received VMBus packet while copying the report descriptor. Pass\nthe received initial-device-info size into the parser and reject\ndescriptor lengths that exceed the packet.\n\nImpact: A malicious Hyper-V host or backend can crash a guest by sending\na short initial device-info message with an oversized HID report\ndescriptor length.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-04 16:18:01","updated_at":"2026-09-04 16:18:01"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/608f8fd8c0f7b6268da43509447802955f210aac","name":"https://git.kernel.org/stable/c/608f8fd8c0f7b6268da43509447802955f210aac","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/390d3d9c52a710fdc9de95a537747397c0c671d1","name":"https://git.kernel.org/stable/c/390d3d9c52a710fdc9de95a537747397c0c671d1","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/c894143c508a7e063aab9f73c9e835ab40121283","name":"https://git.kernel.org/stable/c/c894143c508a7e063aab9f73c9e835ab40121283","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/934b7778aa7b7c8f6bb073d2a73ba3674885bae0","name":"https://git.kernel.org/stable/c/934b7778aa7b7c8f6bb073d2a73ba3674885bae0","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/e0d5d3e45e142b7ef7525654aaa54d3e986002a6","name":"https://git.kernel.org/stable/c/e0d5d3e45e142b7ef7525654aaa54d3e986002a6","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/f84d777574b748b1a488723ca7be9d87a301a872","name":"https://git.kernel.org/stable/c/f84d777574b748b1a488723ca7be9d87a301a872","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/334271d3812ab3197c95b4593bc6745f8d189114","name":"https://git.kernel.org/stable/c/334271d3812ab3197c95b4593bc6745f8d189114","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/8614c043b11cc35ffebd35542ab4da275f8f923d","name":"https://git.kernel.org/stable/c/8614c043b11cc35ffebd35542ab4da275f8f923d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/2529737763cb4bcfcaf397beeea2664656c865b4","name":"https://git.kernel.org/stable/c/2529737763cb4bcfcaf397beeea2664656c865b4","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-80765","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80765","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b95f5bcb811e3905b5376f87789da8d097fee682 e0d5d3e45e142b7ef7525654aaa54d3e986002a6 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b95f5bcb811e3905b5376f87789da8d097fee682 390d3d9c52a710fdc9de95a537747397c0c671d1 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b95f5bcb811e3905b5376f87789da8d097fee682 8614c043b11cc35ffebd35542ab4da275f8f923d git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b95f5bcb811e3905b5376f87789da8d097fee682 334271d3812ab3197c95b4593bc6745f8d189114 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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00:05:27"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/hid/hid-hyperv.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"e0d5d3e45e142b7ef7525654aaa54d3e986002a6","status":"affected","version":"b95f5bcb811e3905b5376f87789da8d097fee682","versionType":"git"},{"lessThan":"390d3d9c52a710fdc9de95a537747397c0c671d1","status":"affected","version":"b95f5bcb811e3905b5376f87789da8d097fee682","versionType":"git"},{"lessThan":"8614c043b11cc35ffebd35542ab4da275f8f923d","status":"affected","version":"b95f5bcb811e3905b5376f87789da8d097fee682","versionType":"git"},{"lessThan":"334271d3812ab3197c95b4593bc6745f8d189114","status":"affected","version":"b95f5bcb811e3905b5376f87789da8d097fee682","versionType":"git"},{"lessThan":"f84d777574b748b1a488723ca7be9d87a301a872","status":"affected","version":"b95f5bcb811e3905b5376f87789da8d097fee682","versionType":"git"},{"lessThan":"608f8fd8c0f7b6268da43509447802955f210aac","status":"affected","version":"b95f5bcb811e3905b5376f87789da8d097fee682","versionType":"git"},{"lessThan":"2529737763cb4bcfcaf397beeea2664656c865b4","status":"affected","version":"b95f5bcb811e3905b5376f87789da8d097fee682","versionType":"git"},{"lessThan":"c894143c508a7e063aab9f73c9e835ab40121283","status":"affected","version":"b95f5bcb811e3905b5376f87789da8d097fee682","versionType":"git"},{"lessThan":"934b7778aa7b7c8f6bb073d2a73ba3674885bae0","status":"affected","version":"b95f5bcb811e3905b5376f87789da8d097fee682","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/hid/hid-hyperv.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"3.3"},{"lessThan":"3.3","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.267","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.218","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.185","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.154","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.106","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.47","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.11","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.1","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.267","versionStartIncluding":"3.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.218","versionStartIncluding":"3.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.185","versionStartIncluding":"3.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.154","versionStartIncluding":"3.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.106","versionStartIncluding":"3.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.47","versionStartIncluding":"3.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.11","versionStartIncluding":"3.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.1","versionStartIncluding":"3.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"3.3","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nHID: hyperv: validate initial device info bounds\n\nThe Hyper-V synthetic HID host supplies SYNTH_HID_INITIAL_DEVICE_INFO\nmessages that contain a HID descriptor followed by the report descriptor\nbytes. mousevsc_on_receive_device_info() trusts bLength and\nwDescriptorLength without checking that the received packet contains both\nbyte ranges.\n\nA malformed host or backend message can therefore make the guest read\npast the received VMBus packet while copying the report descriptor. Pass\nthe received initial-device-info size into the parser and reject\ndescriptor lengths that exceed the packet.\n\nImpact: A malicious Hyper-V host or backend can crash a guest by sending\na short initial device-info message with an oversized HID report\ndescriptor length."}],"providerMetadata":{"dateUpdated":"2026-09-04T15:12:37.639Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/e0d5d3e45e142b7ef7525654aaa54d3e986002a6"},{"url":"https://git.kernel.org/stable/c/390d3d9c52a710fdc9de95a537747397c0c671d1"},{"url":"https://git.kernel.org/stable/c/8614c043b11cc35ffebd35542ab4da275f8f923d"},{"url":"https://git.kernel.org/stable/c/334271d3812ab3197c95b4593bc6745f8d189114"},{"url":"https://git.kernel.org/stable/c/f84d777574b748b1a488723ca7be9d87a301a872"},{"url":"https://git.kernel.org/stable/c/608f8fd8c0f7b6268da43509447802955f210aac"},{"url":"https://git.kernel.org/stable/c/2529737763cb4bcfcaf397beeea2664656c865b4"},{"url":"https://git.kernel.org/stable/c/c894143c508a7e063aab9f73c9e835ab40121283"},{"url":"https://git.kernel.org/stable/c/934b7778aa7b7c8f6bb073d2a73ba3674885bae0"}],"title":"HID: hyperv: validate initial device info bounds","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-80765","datePublished":"2026-09-04T15:12:37.639Z","dateReserved":"2026-08-26T14:34:25.791Z","dateUpdated":"2026-09-04T15:12:37.639Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-04 16:18:01","lastModifiedDate":"2026-09-04 16:18:01","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"80765","Ordinal":"1","Title":"HID: hyperv: validate initial device info bounds","CVE":"CVE-2026-80765","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"80765","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nHID: hyperv: validate initial device info bounds\n\nThe Hyper-V synthetic HID host supplies SYNTH_HID_INITIAL_DEVICE_INFO\nmessages that contain a HID descriptor followed by the report descriptor\nbytes. mousevsc_on_receive_device_info() trusts bLength and\nwDescriptorLength without checking that the received packet contains both\nbyte ranges.\n\nA malformed host or backend message can therefore make the guest read\npast the received VMBus packet while copying the report descriptor. Pass\nthe received initial-device-info size into the parser and reject\ndescriptor lengths that exceed the packet.\n\nImpact: A malicious Hyper-V host or backend can crash a guest by sending\na short initial device-info message with an oversized HID report\ndescriptor length.","Type":"Description","Title":"HID: hyperv: validate initial device info bounds"}]}}}