{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-98930",
  "modified": "2026-10-24T04:30:01Z",
  "upstream": [
    "CVE-2026-98930"
  ],
  "published": "2026-10-23T12:06:24Z",
  "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 ]",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.47-1+rpt4"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-2712",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v6",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7l",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v8",
            "binary_version": "1:6.1.47-1+rpt4"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.1.47-1+rpt4": {
            "linux_commit": "655fc658a15ae7a6f37103754adb39ba52a9a14e",
            "upstream_version": "6.1.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": null,
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-98930"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/3bd77c59576b1d447fd56cc689ae9523a334b924"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/a379ac504fcb8c6fc2aa36203f5489b9581eb2e0"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/d0e3bf633f0585a0c2c2105ea7723777d764fae5"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/d343407b728a80b74be3c24b59f15e60289ea527"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-10-23T12:06:24Z"
  }
}