{
  "cveId": "CVE-2026-98149",
  "url": "https://patchblox.com/security/cve/CVE-2026-98149",
  "summary": "CVE-2026-98149 is fixed in linux on 1 platform by DEBIAN-CVE-2026-98149 (version 7.2.7-1), released October 2, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  bpf: Fix percpu map update indexing with sparse...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  bpf: Fix percpu map update indexing with sparse CPU IDs  Per-CPU array, hash, and cgroup storage map updates without BPF_F_CPU or BPF_F_ALL_CPUS use a value buffer whose per-CPU slots are packed in possible-CPU order. The buffer is sized as:    round_up(value_size, 8) * num_possible_cpus()  The update paths iterate over possible CPUs, but use the logical CPU ID to calculate the source offset:    value \u002B size * cpu  This only works when possible CPU IDs are contiguous starting at zero.  For example, with a possible CPU mask of 0,2-3, the buffer contains three slots corresponding to CPUs 0, 2, and 3. CPU2 is therefore expected to use slot 1 and CPU3 slot 2. Instead, the current code uses slots 2 and 3 respectively, causing incorrect per-CPU values and an out-of-bounds read from the update buffer for CPU3.  The corresponding lookup paths already use a dense offset while iterating over possible CPUs. Do the same for the array, hash, and cgroup storage update paths, advancing the source offset once for each possible CPU. BPF_F_ALL_CPUS continues to use the same value for every CPU.",
  "published": "2026-09-25T11:17:46Z",
  "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": 0.00124,
  "epssPercentile": 0.02182,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.2.7-1",
      "fix": "DEBIAN-CVE-2026-98149",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-98149",
      "released": "2026-10-02T21:04:56Z"
    }
  ],
  "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"
  }
}