{
  "cveId": "CVE-2023-53484",
  "url": "https://patchblox.com/security/cve/CVE-2023-53484",
  "summary": "CVE-2023-53484 is fixed in 20 products on 1 platform, first by ALAS2023-2023-228, released June 21, 2023. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  lib: cpu_rmap: Avoid use after free on rmap-\u003Eobj...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  lib: cpu_rmap: Avoid use after free on rmap-\u003Eobj array entries  When calling irq_set_affinity_notifier() with NULL at the notify argument, it will cause freeing of the glue pointer in the corresponding array entry but will leave the pointer in the array. A subsequent call to free_irq_cpu_rmap() will try to free this entry again leading to possible use after free.  Fix that by setting NULL to the array entry and checking that we have non-zero at the array entry when iterating over the array in free_irq_cpu_rmap().  The current code does not suffer from this since there are no cases where irq_set_affinity_notifier(irq, NULL) (note the NULL passed for the notify arg) is called, followed by a call to free_irq_cpu_rmap() so we don\u0027t hit and issue. Subsequent patches in this series excersize this flow, hence the required fix.",
  "published": "2023-06-21T19:11:00Z",
  "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": 0.00164,
  "epssPercentile": 0.05594,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "bpftool",
      "release": "amzn 2023",
      "fixedVersion": "6.1.34-56.100.amzn2023",
      "fix": "ALAS2023-2023-228",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-228",
      "released": "2023-06-21T19:11:00Z"
    },
    {
      "platform": "linux",
      "product": "bpftool-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "6.1.34-56.100.amzn2023",
      "fix": "ALAS2023-2023-228",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-228",
      "released": "2023-06-21T19:11:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel",
      "release": "amzn 2023",
      "fixedVersion": "6.1.34-56.100.amzn2023",
      "fix": "ALAS2023-2023-228",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-228",
      "released": "2023-06-21T19:11:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "6.1.34-56.100.amzn2023",
      "fix": "ALAS2023-2023-228",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-228",
      "released": "2023-06-21T19:11:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-debuginfo-common-aarch64",
      "release": "amzn 2023",
      "fixedVersion": "6.1.34-56.100.amzn2023",
      "fix": "ALAS2023-2023-228",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-228",
      "released": "2023-06-21T19:11:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-debuginfo-common-x86_64",
      "release": "amzn 2023",
      "fixedVersion": "6.1.34-56.100.amzn2023",
      "fix": "ALAS2023-2023-228",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-228",
      "released": "2023-06-21T19:11:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-devel",
      "release": "amzn 2023",
      "fixedVersion": "6.1.34-56.100.amzn2023",
      "fix": "ALAS2023-2023-228",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-228",
      "released": "2023-06-21T19:11:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-headers",
      "release": "amzn 2023",
      "fixedVersion": "6.1.34-56.100.amzn2023",
      "fix": "ALAS2023-2023-228",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-228",
      "released": "2023-06-21T19:11:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-libbpf",
      "release": "amzn 2023",
      "fixedVersion": "6.1.34-56.100.amzn2023",
      "fix": "ALAS2023-2023-228",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-228",
      "released": "2023-06-21T19:11:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-libbpf-devel",
      "release": "amzn 2023",
      "fixedVersion": "6.1.34-56.100.amzn2023",
      "fix": "ALAS2023-2023-228",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-228",
      "released": "2023-06-21T19:11:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-libbpf-static",
      "release": "amzn 2023",
      "fixedVersion": "6.1.34-56.100.amzn2023",
      "fix": "ALAS2023-2023-228",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-228",
      "released": "2023-06-21T19:11:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-livepatch-6.1.34-56.100",
      "release": "amzn 2023",
      "fixedVersion": "1.0-0.amzn2023",
      "fix": "ALAS2023-2023-228",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-228",
      "released": "2023-06-21T19:11:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-tools",
      "release": "amzn 2023",
      "fixedVersion": "6.1.34-56.100.amzn2023",
      "fix": "ALAS2023-2023-228",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-228",
      "released": "2023-06-21T19:11:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-tools-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "6.1.34-56.100.amzn2023",
      "fix": "ALAS2023-2023-228",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-228",
      "released": "2023-06-21T19:11:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-tools-devel",
      "release": "amzn 2023",
      "fixedVersion": "6.1.34-56.100.amzn2023",
      "fix": "ALAS2023-2023-228",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-228",
      "released": "2023-06-21T19:11:00Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.1.37-1",
      "fix": "DEBIAN-CVE-2023-53484",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-53484",
      "released": "2025-10-01T12:15:51Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.3.7-1",
      "fix": "DEBIAN-CVE-2023-53484",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-53484",
      "released": "2025-10-01T12:15:51Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.3.7-1",
      "fix": "DEBIAN-CVE-2023-53484",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-53484",
      "released": "2025-10-01T12:15:51Z"
    },
    {
      "platform": "linux",
      "product": "perf",
      "release": "amzn 2023",
      "fixedVersion": "6.1.34-56.100.amzn2023",
      "fix": "ALAS2023-2023-228",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-228",
      "released": "2023-06-21T19:11:00Z"
    },
    {
      "platform": "linux",
      "product": "perf-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "6.1.34-56.100.amzn2023",
      "fix": "ALAS2023-2023-228",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-228",
      "released": "2023-06-21T19:11:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-perf",
      "release": "amzn 2023",
      "fixedVersion": "6.1.34-56.100.amzn2023",
      "fix": "ALAS2023-2023-228",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-228",
      "released": "2023-06-21T19:11:00Z"
    },
    {
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      "product": "python3-perf-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "6.1.34-56.100.amzn2023",
      "fix": "ALAS2023-2023-228",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-228",
      "released": "2023-06-21T19:11:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T07:25:28Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}