{
  "cveId": "CVE-2026-56391",
  "url": "https://patchblox.com/security/cve/CVE-2026-56391",
  "summary": "CVE-2026-56391 is fixed in 9 products on 1 platform, first by gnu-coreutils 9.7-3ubuntu2.1, released July 24, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "coreutils: GNU coreutils uniq is vulnerable to an out\u2011of\u2011bounds read due to incorrect handling of multibyte input when the -w (-...",
  "description": "GNU coreutils uniq is vulnerable to an out\u2011of\u2011bounds read due to incorrect handling of multibyte input when the -w (--check-chars) option is used. The find_field() function miscalculates the byte length of characters by repeatedly processing a fixed pointer instead of advancing through the input, resulting in an inflated length value. \nThis incorrect length is later used in a memcmp operation, causing reads beyond the allocated buffer when processing crafted multibyte input.\nWhen running GNU coreutils uniq with attacker-provided arguments, this behavior leads to a crash and potential adjacent heap memory exposure.\nThis issue has been fixed in the commit d64e35a8a4c0e4608321433e0d84d917e4e36371.",
  "published": "2026-07-24T02:16:00Z",
  "severity": "moderate",
  "cvss": 6.1,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H",
  "epss": 0.00131,
  "epssPercentile": 0.02732,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "coreutils",
      "release": "Fedora 43",
      "fixedVersion": "9.7-10.fc43",
      "fix": "FEDORA-2026-25427610BB",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-25427610bb",
      "released": "2026-08-03T08:34:19Z"
    },
    {
      "platform": "linux",
      "product": "coreutils",
      "release": "RHEL 10",
      "fixedVersion": "9.5-8.el10_2.1",
      "fix": "RHSA-2026:67886",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-67886",
      "released": "2026-07-24T07:44:54Z"
    },
    {
      "platform": "linux",
      "product": "coreutils",
      "release": "almalinux 10",
      "fixedVersion": "9.5-8.el10_2.1",
      "fix": "ALSA-2026:67886",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-67886",
      "released": "2026-09-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "coreutils",
      "release": "ol 10",
      "fixedVersion": "0:9.5-8.0.1.el10_2.1",
      "fix": "ELSA-2026-67886",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-67886",
      "released": "2026-09-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "coreutils",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "9.6-160000.3.1",
      "fix": "OPENSUSE-SU-2026:22147-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-22147-1",
      "released": "2026-11-07T00:48:28Z"
    },
    {
      "platform": "linux",
      "product": "coreutils",
      "release": "rocky 10",
      "fixedVersion": "0:9.5-8.el10_2.1",
      "fix": "RLSA-2026:67886",
      "url": "https://patchblox.com/security/fix/linux/rlsa-2026-67886",
      "released": "2026-09-17T12:10:28Z"
    },
    {
      "platform": "linux",
      "product": "coreutils",
      "release": "sles 16.0",
      "fixedVersion": "9.6-160000.3.1",
      "fix": "SUSE-SU-2026:24268-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-24268-1",
      "released": "2026-11-07T00:45:20Z"
    },
    {
      "platform": "linux",
      "product": "coreutils-common",
      "release": "Fedora 43",
      "fixedVersion": "9.7-10.fc43",
      "fix": "FEDORA-2026-25427610BB",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-25427610bb",
      "released": "2026-08-03T08:34:19Z"
    },
    {
      "platform": "linux",
      "product": "coreutils-common",
      "release": "almalinux 10",
      "fixedVersion": "9.5-8.el10_2.1",
      "fix": "ALSA-2026:67886",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-67886",
      "released": "2026-09-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "coreutils-common",
      "release": "ol 10",
      "fixedVersion": "0:9.5-8.0.1.el10_2.1",
      "fix": "ELSA-2026-67886",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-67886",
      "released": "2026-09-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "coreutils-debuginfo",
      "release": "Fedora 43",
      "fixedVersion": "9.7-10.fc43",
      "fix": "FEDORA-2026-25427610BB",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-25427610bb",
      "released": "2026-08-03T08:34:19Z"
    },
    {
      "platform": "linux",
      "product": "coreutils-debugsource",
      "release": "Fedora 43",
      "fixedVersion": "9.7-10.fc43",
      "fix": "FEDORA-2026-25427610BB",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-25427610bb",
      "released": "2026-08-03T08:34:19Z"
    },
    {
      "platform": "linux",
      "product": "coreutils-single",
      "release": "Fedora 43",
      "fixedVersion": "9.7-10.fc43",
      "fix": "FEDORA-2026-25427610BB",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-25427610bb",
      "released": "2026-08-03T08:34:19Z"
    },
    {
      "platform": "linux",
      "product": "coreutils-single",
      "release": "almalinux 10",
      "fixedVersion": "9.5-8.el10_2.1",
      "fix": "ALSA-2026:67886",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-67886",
      "released": "2026-09-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "coreutils-single",
      "release": "ol 10",
      "fixedVersion": "0:9.5-8.0.1.el10_2.1",
      "fix": "ELSA-2026-67886",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-67886",
      "released": "2026-09-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "coreutils-single",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "9.6-160000.3.1",
      "fix": "OPENSUSE-SU-2026:22147-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-22147-1",
      "released": "2026-11-07T00:48:28Z"
    },
    {
      "platform": "linux",
      "product": "coreutils-single",
      "release": "sles 16.0",
      "fixedVersion": "9.6-160000.3.1",
      "fix": "SUSE-SU-2026:24268-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-24268-1",
      "released": "2026-11-07T00:45:20Z"
    },
    {
      "platform": "linux",
      "product": "coreutils-single-debuginfo",
      "release": "Fedora 43",
      "fixedVersion": "9.7-10.fc43",
      "fix": "FEDORA-2026-25427610BB",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-25427610bb",
      "released": "2026-08-03T08:34:19Z"
    },
    {
      "platform": "linux",
      "product": "coreutils-systemd",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "9.6-160000.3.1",
      "fix": "OPENSUSE-SU-2026:22147-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-22147-1",
      "released": "2026-11-07T00:48:28Z"
    },
    {
      "platform": "linux",
      "product": "coreutils-systemd",
      "release": "sles 16.0",
      "fixedVersion": "9.6-160000.3.1",
      "fix": "SUSE-SU-2026:24268-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-24268-1",
      "released": "2026-11-07T00:45:20Z"
    },
    {
      "platform": "linux",
      "product": "coreutils-testsuite",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "9.6-160000.3.1",
      "fix": "OPENSUSE-SU-2026:22147-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-22147-1",
      "released": "2026-11-07T00:48:28Z"
    },
    {
      "platform": "linux",
      "product": "gnu-coreutils",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "9.7-3ubuntu2.1",
      "fix": "gnu-coreutils 9.7-3ubuntu2.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-gnu-coreutils-9.7-3ubuntu2.1",
      "released": "2026-07-24T02:16:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T01:18:40Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}