CVE-2026-72294

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-72294", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-09T03:40:39.917Z", "datePublished": "2026-08-15T05:55:14.553Z", "dateUpdated": "2026-08-17T05:42:26.951Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T05:42:26.951Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nLoongArch: KVM: Check irq validity in kvm_vcpu_ioctl_interrupt()\n\nFunction kvm_vcpu_ioctl_interrupt() can be called from userspace, here\nadd irq validility cheking in kvm_vcpu_ioctl_interrupt()."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - The flaw is reached only through local KVM ioctls on /dev/kvm (KVM_CREATE_VM, KVM_CREATE_VCPU, KVM_INTERRUPT on the vCPU fd); kvm_arch_vcpu_unlocked_ioctl() passes attacker-controlled irq values into kvm_vcpu_ioctl_interrupt() with no network, adjacent, or physical entry path.\nAC:L - One KVM_INTERRUPT ioctl with irq >= 15 or irq=0x80000000 deterministically calls kvm_queue_irq()/kvm_dequeue_irq(), which invoke set_bit()/clear_bit() far past the 15-bit irq_pending/irq_clear fields; no race, timing window, or attacker-uncontrollable memory layout is required.\nPR:L - Exploitation needs only permission to open /dev/kvm and manage a VM/vCPU (commonly kvm group membership or CAP_SYS_ADMIN obtainable inside a user namespace); it does not require init-namespace root or capabilities unavailable to an unprivileged local tenant.\nUI:N - No victim or operator interaction beyond the attacker's own KVM setup is required; once /dev/kvm access exists, a single malicious KVM_INTERRUPT ioctl on a controlled vCPU fd triggers the out-of-bounds bit manipulation.\nS:C - A KVM VM operator can corrupt host kernel memory in kvm_vcpu_arch from the KVM userspace interface, crossing the guest/VM-to-host virtualization boundary rather than confining impact to the attacker's own VM security scope.\nC:H - Unvalidated irq indices make set_bit()/clear_bit() operate many words beyond irq_pending/irq_clear, corrupting adjacent host vcpu->arch fields and potentially neighboring slab objects; per kernel guidance this out-of-bounds memory corruption is leverageable for host kernel information disclosure.\nI:H - The attacker fully controls the bit index via the irq argument, yielding controlled out-of-bounds set_bit()/clear_bit() writes across the vCPU kmem_cache allocation that can be steered toward host kernel privilege escalation or code execution.\nA:H - Corrupting irq_pending-adjacent kvm_vcpu_arch state or memory beyond the vCPU object can immediately oops or panic the host kernel when the vCPU runs or on subsequent KVM operations, constituting high availability impact."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["arch/loongarch/kvm/vcpu.c"], "versions": [{"version": "f45ad5b8aa9335bc6b30331b739e778f2f730b35", "lessThan": "15469ba0284c7cc01c38493391e9e73b918833c4", "status": "affected", "versionType": "git"}, {"version": "f45ad5b8aa9335bc6b30331b739e778f2f730b35", "lessThan": "efe27b19a15c384cad7c80de399f3107ab070e6d", "status": "affected", "versionType": "git"}, {"version": "f45ad5b8aa9335bc6b30331b739e778f2f730b35", "lessThan": "d4574547e04a47ad498149576f65b84475ea6f4c", "status": "affected", "versionType": "git"}, {"version": "f45ad5b8aa9335bc6b30331b739e778f2f730b35", "lessThan": "09b318ab77b7a4fc9987fd98d1525fc55ddc2617", "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/loongarch/kvm/vcpu.c"], "versions": [{"version": "6.7", "status": "affected"}, {"version": "0", "lessThan": "6.7", "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": "6.7", "versionEndExcluding": "6.12.97"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.7", "versionEndExcluding": "6.18.40"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.7", "versionEndExcluding": "7.1.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.7", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/15469ba0284c7cc01c38493391e9e73b918833c4"}, {"url": "https://git.kernel.org/stable/c/efe27b19a15c384cad7c80de399f3107ab070e6d"}, {"url": "https://git.kernel.org/stable/c/d4574547e04a47ad498149576f65b84475ea6f4c"}, {"url": "https://git.kernel.org/stable/c/09b318ab77b7a4fc9987fd98d1525fc55ddc2617"}], "title": "LoongArch: KVM: Check irq validity in kvm_vcpu_ioctl_interrupt()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["arch/loongarch/kvm/vcpu.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "15469ba0284c7cc01c38493391e9e73b918833c4", "status": "affected", "version": "f45ad5b8aa9335bc6b30331b739e778f2f730b35", "versionType": "git"}, {"lessThan": "efe27b19a15c384cad7c80de399f3107ab070e6d", "status": "affected", "version": "f45ad5b8aa9335bc6b30331b739e778f2f730b35", "versionType": "git"}, {"lessThan": "d4574547e04a47ad498149576f65b84475ea6f4c", "status": "affected", "version": "f45ad5b8aa9335bc6b30331b739e778f2f730b35", "versionType": "git"}, {"lessThan": "09b318ab77b7a4fc9987fd98d1525fc55ddc2617", "status": "affected", "version": "f45ad5b8aa9335bc6b30331b739e778f2f730b35", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["arch/loongarch/kvm/vcpu.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.7"}, {"lessThan": "6.7", "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\nLoongArch: KVM: Check irq validity in kvm_vcpu_ioctl_interrupt()\n\nFunction kvm_vcpu_ioctl_interrupt() can be called from userspace, here\nadd irq validility cheking in kvm_vcpu_ioctl_interrupt()."}], "id": "CVE-2026-72294", "lastModified": "2026-08-17T06:18:32.193", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.0, "impactScore": 6.0, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}]}, "published": "2026-08-15T06:22:01.783", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/09b318ab77b7a4fc9987fd98d1525fc55ddc2617"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/15469ba0284c7cc01c38493391e9e73b918833c4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d4574547e04a47ad498149576f65b84475ea6f4c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/efe27b19a15c384cad7c80de399f3107ab070e6d"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: LoongArch: KVM: Check irq validity in kvm_vcpu_ioctl_interrupt()", "id": "2516544", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2516544"}, "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-1287", "details": ["A flaw was found in the Linux kernel's Kernel-based Virtual Machine (KVM) component, specifically within the LoongArch architecture. The `kvm_vcpu_ioctl_interrupt()` function, which can be invoked from userspace, lacks proper validation of interrupt requests. This missing validity check could allow a local attacker to trigger an invalid interrupt, potentially leading to a denial of service."], "name": "CVE-2026-72294", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "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-2026-72294\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-72294\nhttps://lore.kernel.org/linux-cve-announce/2026081501-CVE-2026-72294-ef9a@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f45ad5b8aa9335bc6b30331b739e778f2f730b35,15469ba0284c7cc01c38493391e9e73b918833c4)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f45ad5b8aa9335bc6b30331b739e778f2f730b35,efe27b19a15c384cad7c80de399f3107ab070e6d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f45ad5b8aa9335bc6b30331b739e778f2f730b35,d4574547e04a47ad498149576f65b84475ea6f4c)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f45ad5b8aa9335bc6b30331b739e778f2f730b35,09b318ab77b7a4fc9987fd98d1525fc55ddc2617)"}}], "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": "6.7"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.7)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.12.97,6.12.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.18.40,6.18.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.1.5,7.1.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2-rc1,*]"}}], "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": "2026-08-15T10:45:06.978730+00:00", "updated": "2026-08-22T09:00:10.775291+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}