{"id":"CVE-2026-98930","revision":"79539cd8a63c491e9aed8adc6996aee4","records":[{"revision":"79539cd8a63c491e9aed8adc6996aee4","observedAt":"2026-10-23T16:01:20.601+00:00","statement":{"source":"cve-program","id":"CVE-2026-98930","aliases":[],"title":"KVM: s390: Fix IRQ injection with SIGP Stop and Store Status","description":"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 ]","state":0,"publishedAt":"2026-10-23T12:08:17.513+00:00","modifiedAt":"2026-10-23T12:08:17.513+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"arch/s390/kvm/interrupt.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6cddd432e3da5e25eccbc13844d03c871674a62e\",\n                            \"lessThan\": \"3bd77c59576b1d447fd56cc689ae9523a334b924\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"6cddd432e3da5e25eccbc13844d03c871674a62e\",\n                            \"lessThan\": \"a379ac504fcb8c6fc2aa36203f5489b9581eb2e0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"6cddd432e3da5e25eccbc13844d03c871674a62e\",\n                            \"lessThan\": \"d0e3bf633f0585a0c2c2105ea7723777d764fae5\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"6cddd432e3da5e25eccbc13844d03c871674a62e\",\n                            \"lessThan\": \"d343407b728a80b74be3c24b59f15e60289ea527\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"arch/s390/kvm/interrupt.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"4.0\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"4.0\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.112\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.55\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.9\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/3bd77c59576b1d447fd56cc689ae9523a334b924","https://git.kernel.org/stable/c/a379ac504fcb8c6fc2aa36203f5489b9581eb2e0","https://git.kernel.org/stable/c/d0e3bf633f0585a0c2c2105ea7723777d764fae5","https://git.kernel.org/stable/c/d343407b728a80b74be3c24b59f15e60289ea527"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-98930","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-98930","identifiers":["CVE-2026-98930"]},"retained":false,"historicalAffected":[]}],"coverage":[]}