{
  "cveId": "CVE-2023-52942",
  "url": "https://patchblox.com/security/cve/CVE-2023-52942",
  "summary": "CVE-2023-52942 is fixed in 20 products on 1 platform, first by ALAS2023-2023-132, released March 11, 2023. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  cgroup/cpuset: Fix wrong check in update_parent_...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  cgroup/cpuset: Fix wrong check in update_parent_subparts_cpumask()  It was found that the check to see if a partition could use up all the cpus from the parent cpuset in update_parent_subparts_cpumask() was incorrect. As a result, it is possible to leave parent with no effective cpu left even if there are tasks in the parent cpuset. This can lead to system panic as reported in [1].  Fix this probem by updating the check to fail the enabling the partition if parent\u0027s effective_cpus is a subset of the child\u0027s cpus_allowed.  Also record the error code when an error happens in update_prstate() and add a test case where parent partition and child have the same cpu list and parent has task. Enabling partition in the child will fail in this case.  [1] https://www.spinics.net/lists/cgroups/msg36254.html",
  "published": "2023-03-11T01:10:00Z",
  "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": 0.00228,
  "epssPercentile": 0.13698,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "bpftool",
      "release": "amzn 2023",
      "fixedVersion": "6.1.12-17.42.amzn2023",
      "fix": "ALAS2023-2023-132",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-132",
      "released": "2023-03-11T01:10:00Z"
    },
    {
      "platform": "linux",
      "product": "bpftool-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "6.1.12-17.42.amzn2023",
      "fix": "ALAS2023-2023-132",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-132",
      "released": "2023-03-11T01:10:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel",
      "release": "amzn 2023",
      "fixedVersion": "6.1.12-17.42.amzn2023",
      "fix": "ALAS2023-2023-132",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-132",
      "released": "2023-03-11T01:10:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "6.1.12-17.42.amzn2023",
      "fix": "ALAS2023-2023-132",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-132",
      "released": "2023-03-11T01:10:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-debuginfo-common-aarch64",
      "release": "amzn 2023",
      "fixedVersion": "6.1.12-17.42.amzn2023",
      "fix": "ALAS2023-2023-132",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-132",
      "released": "2023-03-11T01:10:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-debuginfo-common-x86_64",
      "release": "amzn 2023",
      "fixedVersion": "6.1.12-17.42.amzn2023",
      "fix": "ALAS2023-2023-132",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-132",
      "released": "2023-03-11T01:10:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-devel",
      "release": "amzn 2023",
      "fixedVersion": "6.1.12-17.42.amzn2023",
      "fix": "ALAS2023-2023-132",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-132",
      "released": "2023-03-11T01:10:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-headers",
      "release": "amzn 2023",
      "fixedVersion": "6.1.12-17.42.amzn2023",
      "fix": "ALAS2023-2023-132",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-132",
      "released": "2023-03-11T01:10:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-libbpf",
      "release": "amzn 2023",
      "fixedVersion": "6.1.12-17.42.amzn2023",
      "fix": "ALAS2023-2023-132",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-132",
      "released": "2023-03-11T01:10:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-libbpf-devel",
      "release": "amzn 2023",
      "fixedVersion": "6.1.12-17.42.amzn2023",
      "fix": "ALAS2023-2023-132",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-132",
      "released": "2023-03-11T01:10:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-libbpf-static",
      "release": "amzn 2023",
      "fixedVersion": "6.1.12-17.42.amzn2023",
      "fix": "ALAS2023-2023-132",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-132",
      "released": "2023-03-11T01:10:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-livepatch-6.1.12-17.42",
      "release": "amzn 2023",
      "fixedVersion": "1.0-0.amzn2023",
      "fix": "ALAS2023-2023-132",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-132",
      "released": "2023-03-11T01:10:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-tools",
      "release": "amzn 2023",
      "fixedVersion": "6.1.12-17.42.amzn2023",
      "fix": "ALAS2023-2023-132",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-132",
      "released": "2023-03-11T01:10:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-tools-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "6.1.12-17.42.amzn2023",
      "fix": "ALAS2023-2023-132",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-132",
      "released": "2023-03-11T01:10:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-tools-devel",
      "release": "amzn 2023",
      "fixedVersion": "6.1.12-17.42.amzn2023",
      "fix": "ALAS2023-2023-132",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-132",
      "released": "2023-03-11T01:10:00Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.1.11-1",
      "fix": "DEBIAN-CVE-2023-52942",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-52942",
      "released": "2025-03-27T17:15:44Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.1.11-1",
      "fix": "DEBIAN-CVE-2023-52942",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-52942",
      "released": "2025-03-27T17:15:44Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.1.11-1",
      "fix": "DEBIAN-CVE-2023-52942",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-52942",
      "released": "2025-03-27T17:15:44Z"
    },
    {
      "platform": "linux",
      "product": "perf",
      "release": "amzn 2023",
      "fixedVersion": "6.1.12-17.42.amzn2023",
      "fix": "ALAS2023-2023-132",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-132",
      "released": "2023-03-11T01:10:00Z"
    },
    {
      "platform": "linux",
      "product": "perf-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "6.1.12-17.42.amzn2023",
      "fix": "ALAS2023-2023-132",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-132",
      "released": "2023-03-11T01:10:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-perf",
      "release": "amzn 2023",
      "fixedVersion": "6.1.12-17.42.amzn2023",
      "fix": "ALAS2023-2023-132",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-132",
      "released": "2023-03-11T01:10:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-perf-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "6.1.12-17.42.amzn2023",
      "fix": "ALAS2023-2023-132",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-132",
      "released": "2023-03-11T01:10:00Z"
    }
  ],
  "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"
  }
}