{
  "cveId": "CVE-2026-45971",
  "url": "https://patchblox.com/security/cve/CVE-2026-45971",
  "summary": "CVE-2026-45971 is fixed in 23 products on 1 platform, first by ALAS2023-2026-1514, released March 30, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  bpf: Limit bpf program signature size  Practical...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  bpf: Limit bpf program signature size  Practical BPF signatures are significantly smaller than KMALLOC_MAX_CACHE_SIZE  Allowing larger sizes opens the door for abuse by passing excessive size values and forcing the kernel into expensive allocation paths (via kmalloc_large or vmalloc).",
  "published": "2026-03-30T09:00:00Z",
  "severity": "medium",
  "cvss": 5.5,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00121,
  "epssPercentile": 0.01902,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "bpftool6.18",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.15-14.217.amzn2023",
      "fix": "ALAS2023-2026-1514",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1514",
      "released": "2026-03-30T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "bpftool6.18-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.15-14.217.amzn2023",
      "fix": "ALAS2023-2026-1514",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1514",
      "released": "2026-03-30T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-livepatch-6.18.15-14.217",
      "release": "amzn 2023",
      "fixedVersion": "1:1.0-0.amzn2023",
      "fix": "ALAS2023-2026-1514",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1514",
      "released": "2026-03-30T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.15-14.217.amzn2023",
      "fix": "ALAS2023-2026-1514",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1514",
      "released": "2026-03-30T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.15-14.217.amzn2023",
      "fix": "ALAS2023-2026-1514",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1514",
      "released": "2026-03-30T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-debuginfo-common-aarch64",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.15-14.217.amzn2023",
      "fix": "ALAS2023-2026-1514",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1514",
      "released": "2026-03-30T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-debuginfo-common-x86_64",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.15-14.217.amzn2023",
      "fix": "ALAS2023-2026-1514",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1514",
      "released": "2026-03-30T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-devel",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.15-14.217.amzn2023",
      "fix": "ALAS2023-2026-1514",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1514",
      "released": "2026-03-30T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-headers",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.15-14.217.amzn2023",
      "fix": "ALAS2023-2026-1514",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1514",
      "released": "2026-03-30T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-libbpf",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.15-14.217.amzn2023",
      "fix": "ALAS2023-2026-1514",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1514",
      "released": "2026-03-30T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-libbpf-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.15-14.217.amzn2023",
      "fix": "ALAS2023-2026-1514",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1514",
      "released": "2026-03-30T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-libbpf-devel",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.15-14.217.amzn2023",
      "fix": "ALAS2023-2026-1514",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1514",
      "released": "2026-03-30T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-libbpf-static",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.15-14.217.amzn2023",
      "fix": "ALAS2023-2026-1514",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1514",
      "released": "2026-03-30T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-modules-extra",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.15-14.217.amzn2023",
      "fix": "ALAS2023-2026-1514",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1514",
      "released": "2026-03-30T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-modules-extra-common",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.15-14.217.amzn2023",
      "fix": "ALAS2023-2026-1514",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1514",
      "released": "2026-03-30T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-tools",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.15-14.217.amzn2023",
      "fix": "ALAS2023-2026-1514",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1514",
      "released": "2026-03-30T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-tools-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.15-14.217.amzn2023",
      "fix": "ALAS2023-2026-1514",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1514",
      "released": "2026-03-30T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-tools-devel",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.15-14.217.amzn2023",
      "fix": "ALAS2023-2026-1514",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1514",
      "released": "2026-03-30T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.18.14-1",
      "fix": "DEBIAN-CVE-2026-45971",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-45971",
      "released": "2026-05-27T17:38:13Z"
    },
    {
      "platform": "linux",
      "product": "perf6.18",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.15-14.217.amzn2023",
      "fix": "ALAS2023-2026-1514",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1514",
      "released": "2026-03-30T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "perf6.18-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.15-14.217.amzn2023",
      "fix": "ALAS2023-2026-1514",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1514",
      "released": "2026-03-30T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-perf6.18",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.15-14.217.amzn2023",
      "fix": "ALAS2023-2026-1514",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1514",
      "released": "2026-03-30T09:00:00Z"
    },
    {
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      "release": "amzn 2023",
      "fixedVersion": "1:6.18.15-14.217.amzn2023",
      "fix": "ALAS2023-2026-1514",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1514",
      "released": "2026-03-30T09:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T00:53:09Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}