{
  "cveId": "CVE-2023-34324",
  "url": "https://patchblox.com/security/cve/CVE-2023-34324",
  "summary": "CVE-2023-34324 is fixed in 21 products on 1 platform, first by ALAS2023-2023-422, released October 30, 2023. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: Closing of an event channel in the Linux kernel can result in a deadlock",
  "description": "Closing of an event channel in the Linux kernel can result in a deadlock. This happens when the close is being performed in parallel to an unrelated Xen console action and the handling of a Xen console interrupt in an unprivileged guest.  The closing of an event channel is e.g. triggered by removal of a paravirtual device on the other side. As this action will cause console messages to be issued on the other side quite often, the chance of triggering the deadlock is not neglectable.  Note that 32-bit Arm-guests are not affected, as the 32-bit Linux kernel on Arm doesn\u0027t use queued-RW-locks, which are required to trigger the issue (on Arm32 a waiting writer doesn\u0027t block further readers to get the lock).",
  "published": "2023-10-30T23:44:00Z",
  "severity": "medium",
  "cvss": 4.9,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.01152,
  "epssPercentile": 0.67167,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "bpftool",
      "release": "amzn 2023",
      "fixedVersion": "6.1.59-84.139.amzn2023",
      "fix": "ALAS2023-2023-422",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-422",
      "released": "2023-10-30T23:44:00Z"
    },
    {
      "platform": "linux",
      "product": "bpftool-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "6.1.59-84.139.amzn2023",
      "fix": "ALAS2023-2023-422",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-422",
      "released": "2023-10-30T23:44:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel",
      "release": "amzn 2023",
      "fixedVersion": "6.1.59-84.139.amzn2023",
      "fix": "ALAS2023-2023-422",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-422",
      "released": "2023-10-30T23:44:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "6.1.59-84.139.amzn2023",
      "fix": "ALAS2023-2023-422",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-422",
      "released": "2023-10-30T23:44:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-debuginfo-common-aarch64",
      "release": "amzn 2023",
      "fixedVersion": "6.1.59-84.139.amzn2023",
      "fix": "ALAS2023-2023-422",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-422",
      "released": "2023-10-30T23:44:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-debuginfo-common-x86_64",
      "release": "amzn 2023",
      "fixedVersion": "6.1.59-84.139.amzn2023",
      "fix": "ALAS2023-2023-422",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-422",
      "released": "2023-10-30T23:44:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-devel",
      "release": "amzn 2023",
      "fixedVersion": "6.1.59-84.139.amzn2023",
      "fix": "ALAS2023-2023-422",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-422",
      "released": "2023-10-30T23:44:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-headers",
      "release": "amzn 2023",
      "fixedVersion": "6.1.59-84.139.amzn2023",
      "fix": "ALAS2023-2023-422",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-422",
      "released": "2023-10-30T23:44:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-libbpf",
      "release": "amzn 2023",
      "fixedVersion": "6.1.59-84.139.amzn2023",
      "fix": "ALAS2023-2023-422",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-422",
      "released": "2023-10-30T23:44:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-libbpf-devel",
      "release": "amzn 2023",
      "fixedVersion": "6.1.59-84.139.amzn2023",
      "fix": "ALAS2023-2023-422",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-422",
      "released": "2023-10-30T23:44:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-libbpf-static",
      "release": "amzn 2023",
      "fixedVersion": "6.1.59-84.139.amzn2023",
      "fix": "ALAS2023-2023-422",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-422",
      "released": "2023-10-30T23:44:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-livepatch-6.1.59-84.139",
      "release": "amzn 2023",
      "fixedVersion": "1.0-0.amzn2023",
      "fix": "ALAS2023-2023-422",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-422",
      "released": "2023-10-30T23:44:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-modules-extra",
      "release": "amzn 2023",
      "fixedVersion": "6.1.59-84.139.amzn2023",
      "fix": "ALAS2023-2023-422",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-422",
      "released": "2023-10-30T23:44:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-tools",
      "release": "amzn 2023",
      "fixedVersion": "6.1.59-84.139.amzn2023",
      "fix": "ALAS2023-2023-422",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-422",
      "released": "2023-10-30T23:44:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-tools-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "6.1.59-84.139.amzn2023",
      "fix": "ALAS2023-2023-422",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-422",
      "released": "2023-10-30T23:44:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-tools-devel",
      "release": "amzn 2023",
      "fixedVersion": "6.1.59-84.139.amzn2023",
      "fix": "ALAS2023-2023-422",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-422",
      "released": "2023-10-30T23:44:00Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.1.64-1",
      "fix": "DEBIAN-CVE-2023-34324",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-34324",
      "released": "2024-01-05T17:15:08Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.5.8-1",
      "fix": "DEBIAN-CVE-2023-34324",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-34324",
      "released": "2024-01-05T17:15:08Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.5.8-1",
      "fix": "DEBIAN-CVE-2023-34324",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-34324",
      "released": "2024-01-05T17:15:08Z"
    },
    {
      "platform": "linux",
      "product": "perf",
      "release": "amzn 2023",
      "fixedVersion": "6.1.59-84.139.amzn2023",
      "fix": "ALAS2023-2023-422",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-422",
      "released": "2023-10-30T23:44:00Z"
    },
    {
      "platform": "linux",
      "product": "perf-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "6.1.59-84.139.amzn2023",
      "fix": "ALAS2023-2023-422",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-422",
      "released": "2023-10-30T23:44:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-perf",
      "release": "amzn 2023",
      "fixedVersion": "6.1.59-84.139.amzn2023",
      "fix": "ALAS2023-2023-422",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-422",
      "released": "2023-10-30T23:44:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-perf-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "6.1.59-84.139.amzn2023",
      "fix": "ALAS2023-2023-422",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-422",
      "released": "2023-10-30T23:44:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T19:12:23Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}