{
  "cveId": "CVE-2026-41991",
  "url": "https://patchblox.com/security/cve/CVE-2026-41991",
  "summary": "CVE-2026-41991 is fixed in 2 products on 1 platform, first by gzip 1.6-5ubuntu1.2\u002Besm1, released June 29, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "gzip: GNU gzip contains a vulnerability in the gzexe utility related to insecure temporary file handling",
  "description": "GNU gzip contains a vulnerability in the gzexe utility related to insecure temporary file handling. When the mktemp utility is not available in the user\u2019s PATH, gzexe falls back to constructing a temporary file path based solely on the process ID (PID). This predictable filename is created without exclusive access or existence checks. A local attacker can pre\u2011create the predicted temporary file path as a symbolic link pointing to an arbitrary file writable by the victim. When gzexe runs, it follows the symlink and overwrites the target file, resulting in a time\u2011of\u2011check to time\u2011of\u2011use (TOCTOU) condition that allows arbitrary file overwrite.  This issue has been fixed in the commit 4e6f8b24ab823146ab8776f0b7fe486ab34d4269",
  "published": "2026-06-29T05:16:00Z",
  "severity": "medium",
  "cvss": 6,
  "cvssVector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N",
  "epss": 0.00117,
  "epssPercentile": 0.01674,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "gzip",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "1.13-1\u002Bdeb13u1",
      "fix": "DEBIAN-CVE-2026-41991",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-41991",
      "released": "2026-06-29T12:16:29Z"
    },
    {
      "platform": "linux",
      "product": "gzip",
      "release": "Debian 14",
      "fixedVersion": "1.14-1",
      "fix": "DEBIAN-CVE-2026-41991",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-41991",
      "released": "2026-06-29T12:16:29Z"
    },
    {
      "platform": "linux",
      "product": "gzip",
      "release": "RHEL 10",
      "fixedVersion": "1.13-4.el10_2",
      "fix": "RHSA-2026:61625",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-61625",
      "released": "2026-06-29T10:15:57Z"
    },
    {
      "platform": "linux",
      "product": "gzip",
      "release": "RHEL 8",
      "fixedVersion": "0:1.9-15.el8_10",
      "fix": "RHSA-2026:65998",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-65998",
      "released": "2026-09-13T12:46:35Z"
    },
    {
      "platform": "linux",
      "product": "gzip",
      "release": "RHEL 9",
      "fixedVersion": "0:1.12-2.el9_8",
      "fix": "RHSA-2026:61623",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-61623",
      "released": "2026-09-13T12:47:53Z"
    },
    {
      "platform": "linux",
      "product": "gzip",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1.6-5ubuntu1.2\u002Besm1",
      "fix": "gzip 1.6-5ubuntu1.2\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-gzip-1.6-5ubuntu1.2-esm1",
      "released": "2026-06-29T05:16:00Z"
    },
    {
      "platform": "linux",
      "product": "gzip",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "1.10-0ubuntu4.1\u002Besm1",
      "fix": "gzip 1.10-0ubuntu4.1\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-gzip-1.10-0ubuntu4.1-esm1",
      "released": "2026-06-29T05:16:00Z"
    },
    {
      "platform": "linux",
      "product": "gzip",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "1.10-4ubuntu4.2",
      "fix": "gzip 1.10-4ubuntu4.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-gzip-1.10-4ubuntu4.2",
      "released": "2026-07-07T15:29:03Z"
    },
    {
      "platform": "linux",
      "product": "gzip",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "1.12-1ubuntu3.2",
      "fix": "gzip 1.12-1ubuntu3.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-gzip-1.12-1ubuntu3.2",
      "released": "2026-07-07T15:29:06Z"
    },
    {
      "platform": "linux",
      "product": "gzip",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "1.14-1~exp2ubuntu1.1",
      "fix": "gzip 1.14-1~exp2ubuntu1.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-gzip-1.14-1-exp2ubuntu1.1",
      "released": "2026-06-29T05:16:00Z"
    },
    {
      "platform": "linux",
      "product": "gzip",
      "release": "almalinux 10",
      "fixedVersion": "1.13-4.el10_2",
      "fix": "ALSA-2026:61625",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-61625",
      "released": "2026-08-31T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "gzip",
      "release": "almalinux 8",
      "fixedVersion": "1.9-15.el8_10",
      "fix": "ALSA-2026:65998",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-65998",
      "released": "2026-09-09T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "gzip",
      "release": "almalinux 9",
      "fixedVersion": "1.12-2.el9_8",
      "fix": "ALSA-2026:61623",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-61623",
      "released": "2026-08-31T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "gzip",
      "release": "ol 10",
      "fixedVersion": "0:1.13-4.el10_2",
      "fix": "ELSA-2026-61625-0",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-61625-0",
      "released": "2026-09-01T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "gzip",
      "release": "ol 8",
      "fixedVersion": "0:1.9-15.el8_10",
      "fix": "ELSA-2026-65998-0",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-65998-0",
      "released": "2026-09-10T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "gzip",
      "release": "ol 9",
      "fixedVersion": "0:1.12-2.el9_8",
      "fix": "ELSA-2026-61623-0",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-61623-0",
      "released": "2026-09-01T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "gzip",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "1.13-160000.3.1",
      "fix": "OPENSUSE-SU-2026:21371-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-21371-1",
      "released": "2026-07-18T08:12:44Z"
    },
    {
      "platform": "linux",
      "product": "gzip",
      "release": "rocky 10",
      "fixedVersion": "0:1.13-4.el10_2",
      "fix": "RLSA-2026:61625",
      "url": "https://patchblox.com/security/fix/linux/rlsa-2026-61625",
      "released": "2026-09-01T12:09:39Z"
    },
    {
      "platform": "linux",
      "product": "gzip",
      "release": "rocky 8",
      "fixedVersion": "0:1.9-15.el8_10",
      "fix": "RLSA-2026:65998",
      "url": "https://patchblox.com/security/fix/linux/rlsa-2026-65998",
      "released": "2026-09-10T06:01:10Z"
    },
    {
      "platform": "linux",
      "product": "gzip",
      "release": "rocky 9",
      "fixedVersion": "0:1.12-2.el9_8",
      "fix": "RLSA-2026:61623",
      "url": "https://patchblox.com/security/fix/linux/rlsa-2026-61623",
      "released": "2026-09-01T06:05:33Z"
    },
    {
      "platform": "linux",
      "product": "gzip",
      "release": "sles 15.6",
      "fixedVersion": "1.10-150200.13.1",
      "fix": "SUSE-SU-2026:3269-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-3269-1",
      "released": "2026-07-27T11:00:57Z"
    },
    {
      "platform": "linux",
      "product": "gzip",
      "release": "sles 15.7",
      "fixedVersion": "1.10-150200.13.1",
      "fix": "SUSE-SU-2026:3269-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-3269-1",
      "released": "2026-07-27T11:00:57Z"
    },
    {
      "platform": "linux",
      "product": "gzip",
      "release": "sles 16.0",
      "fixedVersion": "1.13-160000.3.1",
      "fix": "SUSE-SU-2026:22818-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-22818-1",
      "released": "2026-07-18T08:14:12Z"
    },
    {
      "platform": "linux",
      "product": "gzip-win32",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1.6-5ubuntu1.2\u002Besm1",
      "fix": "gzip-win32 1.6-5ubuntu1.2\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-gzip-win32-1.6-5ubuntu1.2-esm1",
      "released": "2026-06-29T05:16:00Z"
    },
    {
      "platform": "linux",
      "product": "gzip-win32",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "1.10-0ubuntu4.1\u002Besm1",
      "fix": "gzip-win32 1.10-0ubuntu4.1\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-gzip-win32-1.10-0ubuntu4.1-esm1",
      "released": "2026-06-29T05:16:00Z"
    },
    {
      "platform": "linux",
      "product": "gzip-win32",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "1.10-4ubuntu4.2",
      "fix": "gzip-win32 1.10-4ubuntu4.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-gzip-win32-1.10-4ubuntu4.2",
      "released": "2026-07-07T15:29:03Z"
    },
    {
      "platform": "linux",
      "product": "gzip-win32",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "1.12-1ubuntu3.2",
      "fix": "gzip-win32 1.12-1ubuntu3.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-gzip-win32-1.12-1ubuntu3.2",
      "released": "2026-07-07T15:29:06Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T13:31:49Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}