{
  "cveId": "CVE-2023-53820",
  "url": "https://patchblox.com/security/cve/CVE-2023-53820",
  "summary": "CVE-2023-53820 is fixed in 20 products on 1 platform, first by ALAS2023-2023-138, released March 20, 2023. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  loop: loop_set_status_from_info() check before a...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  loop: loop_set_status_from_info() check before assignment  In loop_set_status_from_info(), lo-\u003Elo_offset and lo-\u003Elo_sizelimit should be checked before reassignment, because if an overflow error occurs, the original correct value will be changed to the wrong value, and it will not be changed back.  More, the original patch did not solve the problem, the value was set and ioctl returned an error, but the subsequent io used the value in the loop driver, which still caused an alarm:  loop_handle_cmd  do_req_filebacked   loff_t pos = ((loff_t) blk_rq_pos(rq) \u003C\u003C 9) \u002B lo-\u003Elo_offset;   lo_rw_aio    cmd-\u003Eiocb.ki_pos = pos",
  "published": "2023-03-20T18:27:00Z",
  "severity": "important",
  "epss": 0.00276,
  "epssPercentile": 0.20178,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "bpftool",
      "release": "amzn 2023",
      "fixedVersion": "6.1.19-30.43.amzn2023",
      "fix": "ALAS2023-2023-138",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-138",
      "released": "2023-03-20T18:27:00Z"
    },
    {
      "platform": "linux",
      "product": "bpftool-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "6.1.19-30.43.amzn2023",
      "fix": "ALAS2023-2023-138",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-138",
      "released": "2023-03-20T18:27:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel",
      "release": "amzn 2023",
      "fixedVersion": "6.1.19-30.43.amzn2023",
      "fix": "ALAS2023-2023-138",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-138",
      "released": "2023-03-20T18:27:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "6.1.19-30.43.amzn2023",
      "fix": "ALAS2023-2023-138",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-138",
      "released": "2023-03-20T18:27:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-debuginfo-common-aarch64",
      "release": "amzn 2023",
      "fixedVersion": "6.1.19-30.43.amzn2023",
      "fix": "ALAS2023-2023-138",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-138",
      "released": "2023-03-20T18:27:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-debuginfo-common-x86_64",
      "release": "amzn 2023",
      "fixedVersion": "6.1.19-30.43.amzn2023",
      "fix": "ALAS2023-2023-138",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-138",
      "released": "2023-03-20T18:27:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-devel",
      "release": "amzn 2023",
      "fixedVersion": "6.1.19-30.43.amzn2023",
      "fix": "ALAS2023-2023-138",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-138",
      "released": "2023-03-20T18:27:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-headers",
      "release": "amzn 2023",
      "fixedVersion": "6.1.19-30.43.amzn2023",
      "fix": "ALAS2023-2023-138",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-138",
      "released": "2023-03-20T18:27:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-libbpf",
      "release": "amzn 2023",
      "fixedVersion": "6.1.19-30.43.amzn2023",
      "fix": "ALAS2023-2023-138",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-138",
      "released": "2023-03-20T18:27:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-libbpf-devel",
      "release": "amzn 2023",
      "fixedVersion": "6.1.19-30.43.amzn2023",
      "fix": "ALAS2023-2023-138",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-138",
      "released": "2023-03-20T18:27:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-libbpf-static",
      "release": "amzn 2023",
      "fixedVersion": "6.1.19-30.43.amzn2023",
      "fix": "ALAS2023-2023-138",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-138",
      "released": "2023-03-20T18:27:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-livepatch-6.1.19-30.43",
      "release": "amzn 2023",
      "fixedVersion": "1.0-0.amzn2023",
      "fix": "ALAS2023-2023-138",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-138",
      "released": "2023-03-20T18:27:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-tools",
      "release": "amzn 2023",
      "fixedVersion": "6.1.19-30.43.amzn2023",
      "fix": "ALAS2023-2023-138",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-138",
      "released": "2023-03-20T18:27:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-tools-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "6.1.19-30.43.amzn2023",
      "fix": "ALAS2023-2023-138",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-138",
      "released": "2023-03-20T18:27:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-tools-devel",
      "release": "amzn 2023",
      "fixedVersion": "6.1.19-30.43.amzn2023",
      "fix": "ALAS2023-2023-138",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-138",
      "released": "2023-03-20T18:27:00Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.1.20-1",
      "fix": "DEBIAN-CVE-2023-53820",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-53820",
      "released": "2025-12-09T16:17:20Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.1.20-1",
      "fix": "DEBIAN-CVE-2023-53820",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-53820",
      "released": "2025-12-09T16:17:20Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.1.20-1",
      "fix": "DEBIAN-CVE-2023-53820",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-53820",
      "released": "2025-12-09T16:17:20Z"
    },
    {
      "platform": "linux",
      "product": "perf",
      "release": "amzn 2023",
      "fixedVersion": "6.1.19-30.43.amzn2023",
      "fix": "ALAS2023-2023-138",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-138",
      "released": "2023-03-20T18:27:00Z"
    },
    {
      "platform": "linux",
      "product": "perf-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "6.1.19-30.43.amzn2023",
      "fix": "ALAS2023-2023-138",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-138",
      "released": "2023-03-20T18:27:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-perf",
      "release": "amzn 2023",
      "fixedVersion": "6.1.19-30.43.amzn2023",
      "fix": "ALAS2023-2023-138",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-138",
      "released": "2023-03-20T18:27:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-perf-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "6.1.19-30.43.amzn2023",
      "fix": "ALAS2023-2023-138",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-138",
      "released": "2023-03-20T18:27:00Z"
    }
  ],
  "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"
  }
}