{
  "cveId": "CVE-2023-52639",
  "url": "https://patchblox.com/security/cve/CVE-2023-52639",
  "summary": "CVE-2023-52639 is fixed in linux on 1 platform, first by DEBIAN-CVE-2023-52639, released April 3, 2024. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  KVM: s390: vsie: fix race during shadow creation...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  KVM: s390: vsie: fix race during shadow creation  Right now it is possible to see gmap-\u003Eprivate being zero in kvm_s390_vsie_gmap_notifier resulting in a crash.  This is due to the fact that we add gmap-\u003Eprivate == kvm after creation:  static int acquire_gmap_shadow(struct kvm_vcpu *vcpu,                                struct vsie_page *vsie_page) { [...]         gmap = gmap_shadow(vcpu-\u003Earch.gmap, asce, edat);         if (IS_ERR(gmap))                 return PTR_ERR(gmap);         gmap-\u003Eprivate = vcpu-\u003Ekvm;  Let children inherit the private field of the parent.",
  "published": "2024-04-03T15:15:51Z",
  "severity": "medium",
  "cvss": 4.7,
  "cvssVector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00175,
  "epssPercentile": 0.06968,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.1.82-1",
      "fix": "DEBIAN-CVE-2023-52639",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-52639",
      "released": "2024-04-03T15:15:51Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.7.7-1",
      "fix": "DEBIAN-CVE-2023-52639",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-52639",
      "released": "2024-04-03T15:15:51Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.7.7-1",
      "fix": "DEBIAN-CVE-2023-52639",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-52639",
      "released": "2024-04-03T15:15:51Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T19:12:23Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}