CVE-2026-98930

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-98930", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.380Z", "datePublished": "2026-10-23T12:08:17.513Z", "dateUpdated": "2026-10-23T12:08:17.513Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-23T12:08:17.513Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: s390: Fix IRQ injection with SIGP Stop and Store Status\n\nWhen __inject_sigp_stop() is called for a Stop and Store Status\noperation, if the vCPU is running, the interrupt is marked as pending\nand the status is stored by the thread performing the KVM_RUN IOCTL.\n\nIf the vCPU is already stopped, the status is stored immediately.\n\nStoring the status means writing into userspace, which might fault, and\n__inject_sigp_stop() is called from do_inject_vcpu() which in turn is\nalways called holding a spinlock, which is obviously an issue.\n\nFix this by returning -EWOULDBLOCK from __inject_sigp_stop(), and\nadding a bool flag to indicate whether a store status is needed. The\ncallers of do_inject_vcpu() are modified to pass the pointer to the\nbool flag; whenever a Store Status operation is needed, the callers can\nnow perform it outside the spinlock.\n\nOpportunistically refactor kvm_s390_set_irq_state() to use\nscoped_guard() and __free().\n\n[ Added Fixes tag while picking -- Claudio ]"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["arch/s390/kvm/interrupt.c"], "versions": [{"version": "6cddd432e3da5e25eccbc13844d03c871674a62e", "lessThan": "3bd77c59576b1d447fd56cc689ae9523a334b924", "status": "affected", "versionType": "git"}, {"version": "6cddd432e3da5e25eccbc13844d03c871674a62e", "lessThan": "a379ac504fcb8c6fc2aa36203f5489b9581eb2e0", "status": "affected", "versionType": "git"}, {"version": "6cddd432e3da5e25eccbc13844d03c871674a62e", "lessThan": "d0e3bf633f0585a0c2c2105ea7723777d764fae5", "status": "affected", "versionType": "git"}, {"version": "6cddd432e3da5e25eccbc13844d03c871674a62e", "lessThan": "d343407b728a80b74be3c24b59f15e60289ea527", "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/s390/kvm/interrupt.c"], "versions": [{"version": "4.0", "status": "affected"}, {"version": "0", "lessThan": "4.0", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.112", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.55", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.9", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "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": "4.0", "versionEndExcluding": "6.12.112"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.0", "versionEndExcluding": "6.18.55"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.0", "versionEndExcluding": "7.2.9"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.0", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/3bd77c59576b1d447fd56cc689ae9523a334b924"}, {"url": "https://git.kernel.org/stable/c/a379ac504fcb8c6fc2aa36203f5489b9581eb2e0"}, {"url": "https://git.kernel.org/stable/c/d0e3bf633f0585a0c2c2105ea7723777d764fae5"}, {"url": "https://git.kernel.org/stable/c/d343407b728a80b74be3c24b59f15e60289ea527"}], "title": "KVM: s390: Fix IRQ injection with SIGP Stop and Store Status", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["arch/s390/kvm/interrupt.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "3bd77c59576b1d447fd56cc689ae9523a334b924", "status": "affected", "version": "6cddd432e3da5e25eccbc13844d03c871674a62e", "versionType": "git"}, {"lessThan": "a379ac504fcb8c6fc2aa36203f5489b9581eb2e0", "status": "affected", "version": "6cddd432e3da5e25eccbc13844d03c871674a62e", "versionType": "git"}, {"lessThan": "d0e3bf633f0585a0c2c2105ea7723777d764fae5", "status": "affected", "version": "6cddd432e3da5e25eccbc13844d03c871674a62e", "versionType": "git"}, {"lessThan": "d343407b728a80b74be3c24b59f15e60289ea527", "status": "affected", "version": "6cddd432e3da5e25eccbc13844d03c871674a62e", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["arch/s390/kvm/interrupt.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "4.0"}, {"lessThan": "4.0", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.112", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.55", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.9", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "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: s390: Fix IRQ injection with SIGP Stop and Store Status\n\nWhen __inject_sigp_stop() is called for a Stop and Store Status\noperation, if the vCPU is running, the interrupt is marked as pending\nand the status is stored by the thread performing the KVM_RUN IOCTL.\n\nIf the vCPU is already stopped, the status is stored immediately.\n\nStoring the status means writing into userspace, which might fault, and\n__inject_sigp_stop() is called from do_inject_vcpu() which in turn is\nalways called holding a spinlock, which is obviously an issue.\n\nFix this by returning -EWOULDBLOCK from __inject_sigp_stop(), and\nadding a bool flag to indicate whether a store status is needed. The\ncallers of do_inject_vcpu() are modified to pass the pointer to the\nbool flag; whenever a Store Status operation is needed, the callers can\nnow perform it outside the spinlock.\n\nOpportunistically refactor kvm_s390_set_irq_state() to use\nscoped_guard() and __free().\n\n[ Added Fixes tag while picking -- Claudio ]"}], "id": "CVE-2026-98930", "lastModified": "2026-10-23T13:17:13.783", "metrics": {}, "published": "2026-10-23T13:17:13.783", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3bd77c59576b1d447fd56cc689ae9523a334b924"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a379ac504fcb8c6fc2aa36203f5489b9581eb2e0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d0e3bf633f0585a0c2c2105ea7723777d764fae5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d343407b728a80b74be3c24b59f15e60289ea527"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: KVM: s390: Fix IRQ injection with SIGP Stop and Store Status", "id": "2559640", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2559640"}, "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": ["In the Linux kernel, the following vulnerability has been resolved:\nKVM: s390: Fix IRQ injection with SIGP Stop and Store Status\nWhen __inject_sigp_stop() is called for a Stop and Store Status\noperation, if the vCPU is running, the interrupt is marked as pending\nand the status is stored by the thread performing the KVM_RUN IOCTL.\nIf the vCPU is already stopped, the status is stored immediately.\nStoring the status means writing into userspace, which might fault, and\n__inject_sigp_stop() is called from do_inject_vcpu() which in turn is\nalways called holding a spinlock, which is obviously an issue.\nFix this by returning -EWOULDBLOCK from __inject_sigp_stop(), and\nadding a bool flag to indicate whether a store status is needed. The\ncallers of do_inject_vcpu() are modified to pass the pointer to the\nbool flag; whenever a Store Status operation is needed, the callers can\nnow perform it outside the spinlock.\nOpportunistically refactor kvm_s390_set_irq_state() to use\nscoped_guard() and __free().\n[ Added Fixes tag while picking -- Claudio ]", "A flaw was found in the Linux kernel's KVM (Kernel-based Virtual Machine) subsystem for the s390 architecture. A local user with access to the KVM interface can trigger a Denial of Service (DoS) by injecting a stop and store status signal into an already stopped virtual CPU (vCPU). In this scenario, the kernel attempts to write to user-space memory while holding an exclusive lock, potentially causing an improper sleep in an atomic context that leads to a host kernel crash."], "name": "CVE-2026-98930", "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": "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": "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"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-10-23T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-98930\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-98930\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98930.mbox"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6cddd432e3da5e25eccbc13844d03c871674a62e,3bd77c59576b1d447fd56cc689ae9523a334b924)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6cddd432e3da5e25eccbc13844d03c871674a62e,a379ac504fcb8c6fc2aa36203f5489b9581eb2e0)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6cddd432e3da5e25eccbc13844d03c871674a62e,d0e3bf633f0585a0c2c2105ea7723777d764fae5)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6cddd432e3da5e25eccbc13844d03c871674a62e,d343407b728a80b74be3c24b59f15e60289ea527)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "4.0"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,4.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.112,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.55,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.9,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3,*]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6cddd432e3da5e25eccbc13844d03c871674a62e,3bd77c59576b1d447fd56cc689ae9523a334b924)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6cddd432e3da5e25eccbc13844d03c871674a62e,a379ac504fcb8c6fc2aa36203f5489b9581eb2e0)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6cddd432e3da5e25eccbc13844d03c871674a62e,d0e3bf633f0585a0c2c2105ea7723777d764fae5)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6cddd432e3da5e25eccbc13844d03c871674a62e,d343407b728a80b74be3c24b59f15e60289ea527)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"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": "4.0"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,4.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.112,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.55,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.9,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3,*]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-10-23T14:45:17.884883+00:00", "updated": "2026-10-29T23:00:06.206147+00:00", "vendors": ["linux", "linux$PRODUCT$linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-413"]}