CVE-2026-80676

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-80676", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-26T14:34:25.783Z", "datePublished": "2026-08-28T06:49:14.747Z", "dateUpdated": "2026-10-21T12:46:51.475Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-21T12:46:51.475Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nDrivers: hv: vmbus: use generic driver_override infrastructure\n\nWhen a driver is probed through __driver_attach(), the bus' match()\ncallback is called without the device lock held, thus accessing the\ndriver_override field without a lock, which can cause a UAF.\n\nFix this by using the driver-core driver_override infrastructure taking\ncare of proper locking internally.\n\nNote that calling match() from __driver_attach() without the device lock\nheld is intentional. [1]"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/hv/vmbus_drv.c", "include/linux/hyperv.h"], "versions": [{"version": "d765edbb301c0e196015a59b17420558088ea33f", "lessThan": "a1656234a4a2dc6e975546867887c5f63e4a90f0", "status": "affected", "versionType": "git"}, {"version": "d765edbb301c0e196015a59b17420558088ea33f", "lessThan": "d1cb12ae81d2f7a58b0b1cfb51862afca98e6058", "status": "affected", "versionType": "git"}, {"version": "d765edbb301c0e196015a59b17420558088ea33f", "lessThan": "0e2f0833556c8c5269deb457b89d538644a3b747", "status": "affected", "versionType": "git"}, {"version": "d765edbb301c0e196015a59b17420558088ea33f", "lessThan": "2fb010ea7ca98cd09a6d365260b769f627e73a76", "status": "affected", "versionType": "git"}, {"version": "d765edbb301c0e196015a59b17420558088ea33f", "lessThan": "331d8900121a1d74ecd45cd2db742ddcb5a0a565", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/hv/vmbus_drv.c", "include/linux/hyperv.h"], "versions": [{"version": "4.20", "status": "affected"}, {"version": "0", "lessThan": "4.20", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.160", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.97", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.40", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.5", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "6.6.160"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "6.12.97"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "6.18.40"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "7.1.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/a1656234a4a2dc6e975546867887c5f63e4a90f0"}, {"url": "https://git.kernel.org/stable/c/d1cb12ae81d2f7a58b0b1cfb51862afca98e6058"}, {"url": "https://git.kernel.org/stable/c/0e2f0833556c8c5269deb457b89d538644a3b747"}, {"url": "https://git.kernel.org/stable/c/2fb010ea7ca98cd09a6d365260b769f627e73a76"}, {"url": "https://git.kernel.org/stable/c/331d8900121a1d74ecd45cd2db742ddcb5a0a565"}], "title": "Drivers: hv: vmbus: use generic driver_override infrastructure", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/hv/vmbus_drv.c", "include/linux/hyperv.h"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "a1656234a4a2dc6e975546867887c5f63e4a90f0", "status": "affected", "version": "d765edbb301c0e196015a59b17420558088ea33f", "versionType": "git"}, {"lessThan": "d1cb12ae81d2f7a58b0b1cfb51862afca98e6058", "status": "affected", "version": "d765edbb301c0e196015a59b17420558088ea33f", "versionType": "git"}, {"lessThan": "0e2f0833556c8c5269deb457b89d538644a3b747", "status": "affected", "version": "d765edbb301c0e196015a59b17420558088ea33f", "versionType": "git"}, {"lessThan": "2fb010ea7ca98cd09a6d365260b769f627e73a76", "status": "affected", "version": "d765edbb301c0e196015a59b17420558088ea33f", "versionType": "git"}, {"lessThan": "331d8900121a1d74ecd45cd2db742ddcb5a0a565", "status": "affected", "version": "d765edbb301c0e196015a59b17420558088ea33f", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/hv/vmbus_drv.c", "include/linux/hyperv.h"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "4.20"}, {"lessThan": "4.20", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.160", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.97", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.40", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.5", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nDrivers: hv: vmbus: use generic driver_override infrastructure\n\nWhen a driver is probed through __driver_attach(), the bus' match()\ncallback is called without the device lock held, thus accessing the\ndriver_override field without a lock, which can cause a UAF.\n\nFix this by using the driver-core driver_override infrastructure taking\ncare of proper locking internally.\n\nNote that calling match() from __driver_attach() without the device lock\nheld is intentional. [1]"}], "id": "CVE-2026-80676", "lastModified": "2026-10-21T13:19:57.933", "metrics": {}, "published": "2026-08-28T08:16:52.883", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0e2f0833556c8c5269deb457b89d538644a3b747"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2fb010ea7ca98cd09a6d365260b769f627e73a76"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/331d8900121a1d74ecd45cd2db742ddcb5a0a565"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a1656234a4a2dc6e975546867887c5f63e4a90f0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d1cb12ae81d2f7a58b0b1cfb51862afca98e6058"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: Drivers: hv: vmbus: use generic driver_override infrastructure", "id": "2525398", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2525398"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-413", "details": ["A flaw was found in the Linux kernel's Hyper-V (hv) VMBus driver. When a driver is being initialized, a specific callback function attempts to access a memory region (`driver_override`) without proper synchronization. This oversight can lead to a Use-After-Free (UAF) vulnerability, where a local attacker could potentially exploit this to cause a system crash (denial of service) or execute unauthorized code."], "name": "CVE-2026-80676", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-08-28T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-80676\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-80676\nhttps://lore.kernel.org/linux-cve-announce/2026082849-CVE-2026-80676-5684@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[d765edbb301c0e196015a59b17420558088ea33f,d1cb12ae81d2f7a58b0b1cfb51862afca98e6058)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[d765edbb301c0e196015a59b17420558088ea33f,0e2f0833556c8c5269deb457b89d538644a3b747)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[d765edbb301c0e196015a59b17420558088ea33f,2fb010ea7ca98cd09a6d365260b769f627e73a76)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[d765edbb301c0e196015a59b17420558088ea33f,331d8900121a1d74ecd45cd2db742ddcb5a0a565)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "4.20"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,4.20)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.97,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.40,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.5,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-08-28T10:00:06.818853+00:00", "updated": "2026-08-31T15:30:04.507128+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}