{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "6cddd432e3da5e25eccbc13844d03c871674a62e"
            },
            {
              "fixed": "3bd77c59576b1d447fd56cc689ae9523a334b924"
            },
            {
              "fixed": "a379ac504fcb8c6fc2aa36203f5489b9581eb2e0"
            },
            {
              "fixed": "d0e3bf633f0585a0c2c2105ea7723777d764fae5"
            },
            {
              "fixed": "d343407b728a80b74be3c24b59f15e60289ea527"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.0.0"
            },
            {
              "fixed": "6.12.112"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.55"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98930.json"
  },
  "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 ]",
  "id": "CVE-2026-98930",
  "modified": "2026-10-28T02:30:52.956858075Z",
  "published": "2026-10-23T12:08:17.513Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3bd77c59576b1d447fd56cc689ae9523a334b924"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a379ac504fcb8c6fc2aa36203f5489b9581eb2e0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d0e3bf633f0585a0c2c2105ea7723777d764fae5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d343407b728a80b74be3c24b59f15e60289ea527"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98930.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98930"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.2",
  "summary": "KVM: s390: Fix IRQ injection with SIGP Stop and Store Status"
}