{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-72280", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-09T03:40:39.916Z", "datePublished": "2026-08-15T05:55:04.969Z", "dateUpdated": "2026-08-17T05:42:15.995Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T05:42:15.995Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: arm64: nv: Drop bogus WARN for write to ZCR_EL2\n\nIt is entirely possible for a guest to write to the ZCR_EL2 sysreg alias\nwhile in a nested context, as it is expected if FEAT_NV2 is advertised\nto the L1 hypervisor.\n\nGet rid of the bogus WARN which, since the hyp vectors were installed at\nthis point, has the effect of a hyp_panic..."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H", "baseScore": 7.1, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - The flaw is reached when guest code in a nested KVM context executes an MSR/MRS to ZCR_EL2 that traps to EL2, traversing KVM_RUN \u2192 hyp fast-path kvm_hyp_handle_zcr_el2() \u2192 kvm_hyp_handle_fpsimd(); this requires local guest execution on an arm64 VHE KVM host, not remote network input.\nAC:L - On arm64 VHE hosts with nested virtualization (FEAT_NV2) and SVE enabled, a tenant guest in nested context (L1 non-hyp or L2) can deterministically issue the ZCR_EL2 access that hits the bogus WARN; the attacker controls the trap timing and FP/SVE lazy-switch preconditions without uncontrollable host races.\nPR:N - No host root or init-namespace capabilities are required\u2014exploitation needs only code execution inside an assigned KVM guest with nested virtualization and SVE enabled (typical nested-virt ARM cloud tenant), not privileged access on the physical host itself.\nUI:N - No victim user or administrator action is required beyond the attacker operating their own nested/SVE-enabled guest workload; triggering is fully automated via a single guest MSR to ZCR_EL2 that traps into the hypervisor fast path.\nS:C - A guest-triggered WARN in EL2 hypervisor code escalates to hyp_panic(), crashing the host kernel and denying all co-resident VMs\u2014crossing the guest-to-host KVM virtualization security boundary even though exploitation is denial-of-service rather than memory corruption.\nC:N - The failure mode is WARN_ON_ONCE \u2192 hyp_panic with no out-of-bounds access, use-after-free, or memory corruption; it is a deterministic hypervisor assertion panic without an information disclosure or memory-read primitive.\nI:N - No guest-controlled kernel memory write or control-flow hijack occurs; the bogus WARN aborts via hyp_panic before any exploitable state mutation beyond crashing the host, and the removed check was incorrectly rejecting a legitimate nested ZCR_EL2 write path.\nA:H - WARN_ON_ONCE in EL2 with hyp vectors installed invokes hyp_panic() and host panic(), immediately denying availability of the hypervisor and every VM on the affected arm64 KVM host; the attack is repeatable on each ZCR_EL2 trap while nested virt and SVE remain enabled."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["arch/arm64/kvm/hyp/include/hyp/switch.h"], "versions": [{"version": "0cfc85b8f5cf3b77463d61542191c75ba0cc3a5f", "lessThan": "6561597dba97e3e8479a9919bda172cf43eb902c", "status": "affected", "versionType": "git"}, {"version": "0cfc85b8f5cf3b77463d61542191c75ba0cc3a5f", "lessThan": "5000bcae71c869cba6674c326fec2d8ad659ae3a", "status": "affected", "versionType": "git"}, {"version": "0cfc85b8f5cf3b77463d61542191c75ba0cc3a5f", "lessThan": "7deadbc5dab5b8e2316364603bc6281129c8461c", "status": "affected", "versionType": "git"}, {"version": "0cfc85b8f5cf3b77463d61542191c75ba0cc3a5f", "lessThan": "9f1667098c6ae7ec81a9a56859cfdacb822aa0d0", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["arch/arm64/kvm/hyp/include/hyp/switch.h"], "versions": [{"version": "6.11", "status": "affected"}, {"version": "0", "lessThan": "6.11", "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": "6.11", "versionEndExcluding": "6.12.97"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.11", "versionEndExcluding": "6.18.40"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.11", "versionEndExcluding": "7.1.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.11", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/6561597dba97e3e8479a9919bda172cf43eb902c"}, {"url": "https://git.kernel.org/stable/c/5000bcae71c869cba6674c326fec2d8ad659ae3a"}, {"url": "https://git.kernel.org/stable/c/7deadbc5dab5b8e2316364603bc6281129c8461c"}, {"url": "https://git.kernel.org/stable/c/9f1667098c6ae7ec81a9a56859cfdacb822aa0d0"}], "title": "KVM: arm64: nv: Drop bogus WARN for write to ZCR_EL2", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["arch/arm64/kvm/hyp/include/hyp/switch.h"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "6561597dba97e3e8479a9919bda172cf43eb902c", "status": "affected", "version": "0cfc85b8f5cf3b77463d61542191c75ba0cc3a5f", "versionType": "git"}, {"lessThan": "5000bcae71c869cba6674c326fec2d8ad659ae3a", "status": "affected", "version": "0cfc85b8f5cf3b77463d61542191c75ba0cc3a5f", "versionType": "git"}, {"lessThan": "7deadbc5dab5b8e2316364603bc6281129c8461c", "status": "affected", "version": "0cfc85b8f5cf3b77463d61542191c75ba0cc3a5f", "versionType": "git"}, {"lessThan": "9f1667098c6ae7ec81a9a56859cfdacb822aa0d0", "status": "affected", "version": "0cfc85b8f5cf3b77463d61542191c75ba0cc3a5f", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["arch/arm64/kvm/hyp/include/hyp/switch.h"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.11"}, {"lessThan": "6.11", "status": "unaffected", "version": "0", "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\nKVM: arm64: nv: Drop bogus WARN for write to ZCR_EL2\n\nIt is entirely possible for a guest to write to the ZCR_EL2 sysreg alias\nwhile in a nested context, as it is expected if FEAT_NV2 is advertised\nto the L1 hypervisor.\n\nGet rid of the bogus WARN which, since the hyp vectors were installed at\nthis point, has the effect of a hyp_panic..."}], "id": "CVE-2026-72280", "lastModified": "2026-08-17T06:18:30.593", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.5, "impactScore": 4.0, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}]}, "published": "2026-08-15T06:21:58.270", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5000bcae71c869cba6674c326fec2d8ad659ae3a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6561597dba97e3e8479a9919bda172cf43eb902c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7deadbc5dab5b8e2316364603bc6281129c8461c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9f1667098c6ae7ec81a9a56859cfdacb822aa0d0"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: KVM: arm64: nv: Drop bogus WARN for write to ZCR_EL2", "id": "2516304", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2516304"}, "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-617", "details": ["A flaw was found in the Linux kernel's KVM (Kernel-based Virtual Machine) for ARM64 architectures. A guest operating system, when operating in a nested virtualization environment, could trigger a hypervisor panic (hyp_panic) by writing to the ZCR_EL2 system register alias. This issue leads to a denial of service for the virtual machine, potentially affecting the stability of the host system."], "name": "CVE-2026-72280", "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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "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": "2026-08-15T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-72280\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-72280\nhttps://lore.kernel.org/linux-cve-announce/2026081558-CVE-2026-72280-0233@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[0cfc85b8f5cf3b77463d61542191c75ba0cc3a5f,6561597dba97e3e8479a9919bda172cf43eb902c)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[0cfc85b8f5cf3b77463d61542191c75ba0cc3a5f,5000bcae71c869cba6674c326fec2d8ad659ae3a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[0cfc85b8f5cf3b77463d61542191c75ba0cc3a5f,7deadbc5dab5b8e2316364603bc6281129c8461c)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[0cfc85b8f5cf3b77463d61542191c75ba0cc3a5f,9f1667098c6ae7ec81a9a56859cfdacb822aa0d0)"}}], "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": "[6.11,6.11]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,6.11)"}}, {"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": "semver", "value": "[7.2-rc4,*)"}}], "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": "2026-08-15T10:00:06.526116+00:00", "updated": "2026-08-18T15:00:06.122287+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}