{
  "cveId": "CVE-2023-52576",
  "url": "https://patchblox.com/security/cve/CVE-2023-52576",
  "summary": "CVE-2023-52576 is fixed in 21 products on 1 platform, first by ALAS2023-2023-385, released October 12, 2023. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  x86/mm, kexec, ima: Use memblock_free_late() fro...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  x86/mm, kexec, ima: Use memblock_free_late() from ima_free_kexec_buffer()  The code calling ima_free_kexec_buffer() runs long after the memblock allocator has already been torn down, potentially resulting in a use after free in memblock_isolate_range().  With KASAN or KFENCE, this use after free will result in a BUG from the idle task, and a subsequent kernel panic.  Switch ima_free_kexec_buffer() over to memblock_free_late() to avoid that bug.",
  "published": "2023-10-12T16:11:00Z",
  "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": 0.00221,
  "epssPercentile": 0.12693,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "bpftool",
      "release": "amzn 2023",
      "fixedVersion": "6.1.56-82.125.amzn2023",
      "fix": "ALAS2023-2023-385",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-385",
      "released": "2023-10-12T16:11:00Z"
    },
    {
      "platform": "linux",
      "product": "bpftool-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "6.1.56-82.125.amzn2023",
      "fix": "ALAS2023-2023-385",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-385",
      "released": "2023-10-12T16:11:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel",
      "release": "amzn 2023",
      "fixedVersion": "6.1.56-82.125.amzn2023",
      "fix": "ALAS2023-2023-385",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-385",
      "released": "2023-10-12T16:11:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "6.1.56-82.125.amzn2023",
      "fix": "ALAS2023-2023-385",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-385",
      "released": "2023-10-12T16:11:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-debuginfo-common-aarch64",
      "release": "amzn 2023",
      "fixedVersion": "6.1.56-82.125.amzn2023",
      "fix": "ALAS2023-2023-385",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-385",
      "released": "2023-10-12T16:11:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-debuginfo-common-x86_64",
      "release": "amzn 2023",
      "fixedVersion": "6.1.56-82.125.amzn2023",
      "fix": "ALAS2023-2023-385",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-385",
      "released": "2023-10-12T16:11:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-devel",
      "release": "amzn 2023",
      "fixedVersion": "6.1.56-82.125.amzn2023",
      "fix": "ALAS2023-2023-385",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-385",
      "released": "2023-10-12T16:11:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-headers",
      "release": "amzn 2023",
      "fixedVersion": "6.1.56-82.125.amzn2023",
      "fix": "ALAS2023-2023-385",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-385",
      "released": "2023-10-12T16:11:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-libbpf",
      "release": "amzn 2023",
      "fixedVersion": "6.1.56-82.125.amzn2023",
      "fix": "ALAS2023-2023-385",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-385",
      "released": "2023-10-12T16:11:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-libbpf-devel",
      "release": "amzn 2023",
      "fixedVersion": "6.1.56-82.125.amzn2023",
      "fix": "ALAS2023-2023-385",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-385",
      "released": "2023-10-12T16:11:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-libbpf-static",
      "release": "amzn 2023",
      "fixedVersion": "6.1.56-82.125.amzn2023",
      "fix": "ALAS2023-2023-385",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-385",
      "released": "2023-10-12T16:11:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-livepatch-6.1.56-82.125",
      "release": "amzn 2023",
      "fixedVersion": "1.0-0.amzn2023",
      "fix": "ALAS2023-2023-385",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-385",
      "released": "2023-10-12T16:11:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-modules-extra",
      "release": "amzn 2023",
      "fixedVersion": "6.1.56-82.125.amzn2023",
      "fix": "ALAS2023-2023-385",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-385",
      "released": "2023-10-12T16:11:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-tools",
      "release": "amzn 2023",
      "fixedVersion": "6.1.56-82.125.amzn2023",
      "fix": "ALAS2023-2023-385",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-385",
      "released": "2023-10-12T16:11:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-tools-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "6.1.56-82.125.amzn2023",
      "fix": "ALAS2023-2023-385",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-385",
      "released": "2023-10-12T16:11:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-tools-devel",
      "release": "amzn 2023",
      "fixedVersion": "6.1.56-82.125.amzn2023",
      "fix": "ALAS2023-2023-385",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-385",
      "released": "2023-10-12T16:11:00Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.1.64-1",
      "fix": "DEBIAN-CVE-2023-52576",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-52576",
      "released": "2024-03-02T22:15:49Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.5.6-1",
      "fix": "DEBIAN-CVE-2023-52576",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-52576",
      "released": "2024-03-02T22:15:49Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.5.6-1",
      "fix": "DEBIAN-CVE-2023-52576",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-52576",
      "released": "2024-03-02T22:15:49Z"
    },
    {
      "platform": "linux",
      "product": "perf",
      "release": "amzn 2023",
      "fixedVersion": "6.1.56-82.125.amzn2023",
      "fix": "ALAS2023-2023-385",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-385",
      "released": "2023-10-12T16:11:00Z"
    },
    {
      "platform": "linux",
      "product": "perf-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "6.1.56-82.125.amzn2023",
      "fix": "ALAS2023-2023-385",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-385",
      "released": "2023-10-12T16:11:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-perf",
      "release": "amzn 2023",
      "fixedVersion": "6.1.56-82.125.amzn2023",
      "fix": "ALAS2023-2023-385",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-385",
      "released": "2023-10-12T16:11:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-perf-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "6.1.56-82.125.amzn2023",
      "fix": "ALAS2023-2023-385",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-385",
      "released": "2023-10-12T16:11:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T01:18:40Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}