{
  "cveId": "CVE-2026-89919",
  "url": "https://patchblox.com/security/cve/CVE-2026-89919",
  "summary": "CVE-2026-89919 is fixed in linux on 1 platform by DEBIAN-CVE-2026-89919 (version 7.2.6-1), released September 23, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  KVM: s390: keyop: use mmu_lock to read gmap-\u003Easc...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  KVM: s390: keyop: use mmu_lock to read gmap-\u003Easce  Every other dat_* consumer in this file (kvm_s390_get_skeys, set_skeys, get_cmma_bits, set_cmma_bits, MEM_CLR_CMMA, kvm_s390_fixup_prefix, kvm_test_age_gfn, kvm_age_gfn) reads kvm-\u003Earch.gmap-\u003Easce *inside* the mmu_lock read-side. keyop is the only outlier.  gmap-\u003Easce is mutated under write_lock(mmu_lock) by gmap_set_limit() and keyop might use a stale asce value for walking as KVM_S390_KEYOP and KVM_S390_VM_MEM_LIMIT_SIZE can run concurrently. This can result in memory corruption.",
  "published": "2026-09-16T11:17:00Z",
  "severity": "high",
  "cvss": 7.8,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00165,
  "epssPercentile": 0.05763,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.2.6-1",
      "fix": "DEBIAN-CVE-2026-89919",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-89919",
      "released": "2026-09-23T19:19:02Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}