{"schema":"threatline.record/2","record":{"id":"CVE-2026-98930","aliases":[],"summary":"KVM: s390: Fix IRQ injection with SIGP Stop and Store Status","details":"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 ]","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98930","source_modified_at":"2026-10-23T12:08:17.513Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Linux","vendor":"Linux","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"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98930","source_modified_at":"2026-10-23T12:08:17.513Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Linux","vendor":"Linux","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"}],"defaultStatus":"affected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98930","source_modified_at":"2026-10-23T12:08:17.513Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Linux","ecosystem":null},"version":"3bd77c59576b1d447fd56cc689ae9523a334b924","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":null,"percentile":null,"score_date":null},"published_at":"2026-10-23T12:08:17.513Z","modified_at":"2026-10-23T12:08:17.513Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-98930","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23T12:08:17.513Z"}],"sources":["CVE List"],"references":[{"source":"CVE List","url":"https://git.kernel.org/stable/c/3bd77c59576b1d447fd56cc689ae9523a334b924"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/a379ac504fcb8c6fc2aa36203f5489b9581eb2e0"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/d0e3bf633f0585a0c2c2105ea7723777d764fae5"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/d343407b728a80b74be3c24b59f15e60289ea527"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-23T12:08:17.513Z","content_hash":"6ef42c771a5a03a7fb3a4d76ef30080380f409a15ea97314ae2470796dc4bd3f"}}