{
  "cveId": "CVE-2026-43274",
  "url": "https://patchblox.com/security/cve/CVE-2026-43274",
  "summary": "CVE-2026-43274 is fixed in linux on 1 platform by DEBIAN-CVE-2026-43274 (version 6.19.6-1), released May 15, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "mailbox: mchp-ipc-sbi: fix out-of-bounds access in mchp_ipc_get_cluster_aggr_irq()",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  mailbox: mchp-ipc-sbi: fix out-of-bounds access in mchp_ipc_get_cluster_aggr_irq()  The cluster_cfg array is dynamically allocated to hold per-CPU configuration structures, with its size based on the number of online CPUs. Previously, this array was indexed using hartid, which may be non-contiguous or exceed the bounds of the array, leading to out-of-bounds access. Switch to using cpuid as the index, as it is guaranteed to be within the valid range provided by for_each_online_cpu().",
  "published": "2026-05-06T12:16:48Z",
  "severity": "Moderate",
  "cvss": 8.4,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00131,
  "epssPercentile": 0.02695,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-43274",
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.19.6-1",
      "fix": "DEBIAN-CVE-2026-43274",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-43274",
      "released": "2026-05-15T16:01:09Z"
    }
  ],
  "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"
  }
}