{
  "cveId": "CVE-2026-89926",
  "url": "https://patchblox.com/security/cve/CVE-2026-89926",
  "summary": "CVE-2026-89926 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-89926, released September 23, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  KVM: s390: Fix length check __import_wp_info()...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  KVM: s390: Fix length check __import_wp_info()  struct kvm_hw_breakpoint::len is a __u64 that is fully controlled by user space. This is then assigned to wp_info-\u003Elen, which is an int. The bounds check is done on the truncated value while the allocation uses the untruncated one:  \twp_info-\u003Elen = bp_data-\u003Elen; \t[...] \tif (wp_info-\u003Elen \u003C 0 || wp_info-\u003Elen \u003E MAX_WP_SIZE) \t\treturn -EINVAL;  \twp_info-\u003Eold_data = kmalloc(bp_data-\u003Elen, GFP_KERNEL_ACCOUNT);  Use the validated value for the allocation as intended. Without this fix userspace can trigger \u003E4GB allocations which will fail and result in a WARN due to MAX_PAGE_ORDER.",
  "published": "2026-09-16T11:17:01Z",
  "severity": "",
  "epss": 0.00217,
  "epssPercentile": 0.12239,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.1.190-1",
      "fix": "DEBIAN-CVE-2026-89926",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-89926",
      "released": "2026-09-23T19:19:02Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.12.111-1",
      "fix": "DEBIAN-CVE-2026-89926",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-89926",
      "released": "2026-09-23T19:19:02Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.2.6-1",
      "fix": "DEBIAN-CVE-2026-89926",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-89926",
      "released": "2026-09-23T19:19:02Z"
    },
    {
      "platform": "linux",
      "product": "linux-6.12",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.12.111-1~deb12u1",
      "fix": "DEBIAN-CVE-2026-89926",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-89926",
      "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"
  }
}