{
  "cveId": "CVE-2026-98719",
  "url": "https://patchblox.com/security/cve/CVE-2026-98719",
  "summary": "CVE-2026-98719 is fixed in linux on 1 platform by DEBIAN-CVE-2026-98719 (version 7.2.10-1), released October 19, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  KVM: SEV: Nullify \u0022have run CPUs\u0022 mask pointer w...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  KVM: SEV: Nullify \u0022have run CPUs\u0022 mask pointer when freeing it  Nullify have_run_cpus when freeing the mask, particularly in the error path of __sev_guest_init(), so that KVM doesn\u0027t have to subtly use sev-\u003Eactive to track whether or not the mask has been freed.  As pointed out by Sashiko, blindly freeing the mask in sev_vm_destroy() results in a double-free if the mask is freed if __sev_guest_init() fails.  Throw the logic in a helper as nullifying the pointer is frustratingly difficult and weird due to have_run_cpus being a single-entry array when CPUMASK_OFFSTACK=n.  Deliberately don\u0027t use CPUMASK_VAR_NULL, as it\u0027s not directly assignable when the cpumask is on-stack, e.g. requires using a local variable and a memcpy(), which is beyond ridiculous.  Furthermore, while clearing the on-stack bitmask is an unnecessary and arguably unwanted side effect, KVM absolutely relies on \u00270\u0027 being the \u0022null\u0022 value given that the struct is zero-allocated.  Opportunistically add an alloc() helper to pair with free(); there are just enough call sites to make doing so worthwhile.",
  "published": "2026-10-18T16:17:25Z",
  "severity": "",
  "epss": 0.00166,
  "epssPercentile": 0.05887,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.2.10-1",
      "fix": "DEBIAN-CVE-2026-98719",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-98719",
      "released": "2026-10-19T16:27:52Z"
    }
  ],
  "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"
  }
}