{
  "cveId": "CVE-2026-41579",
  "url": "https://patchblox.com/security/cve/CVE-2026-41579",
  "summary": "CVE-2026-41579 is fixed in 4 products on 1 platform, first by DEBIAN-CVE-2026-41579, released July 1, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "runc: Malicious image with /dev symlink can trigger limited host filesystem integrity violations",
  "description": "runc is a CLI tool for spawning and running containers according to the OCI specification. In versions prior to 1.3.6, 1.4.0-rc.1, 1.4.0-rc.12, 1.5.0-rc.1, and 1.5.0-rc.1, when setting up the container rootfs, setupPtmx and setupDevSymlinks call os.Remove and os.Symlink with a filepath.Join string which allow an image with /dev as a symlink to trick runc into deleting files called ptmx on the host or creating a hardcoded set of symlinks with specific names and targets in an arbitrary pre-existing host directory. This issue is not exploitable under Docker, because Docker creates a top-level read-only layer that masks any malicious /dev\u00A0symlink present in the container image \u2014 unlike some other Linux container tooling, whose higher-level runtimes built on runc remain exposed to exploitation via a malicious image. This issue has been fixed in versions 1.3.6, 1.4.3 and 1.5.0.",
  "published": "2026-07-01T02:17:00Z",
  "severity": "Low",
  "cvss": 3.3,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N",
  "cwe": "UNIX Symbolic Link (Symlink) Following",
  "epss": 0.00186,
  "epssPercentile": 0.08275,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-41579",
  "fixes": [
    {
      "platform": "linux",
      "product": "govulncheck-vulndb",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "0.0.20260723T184607-160000.1.1",
      "fix": "OPENSUSE-SU-2026:21483-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-21483-1",
      "released": "2026-07-30T09:09:47Z"
    },
    {
      "platform": "linux",
      "product": "runc",
      "release": "Debian 14",
      "fixedVersion": "1.3.6\u002Bds1-1",
      "fix": "DEBIAN-CVE-2026-41579",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-41579",
      "released": "2026-07-01T02:17:00Z"
    },
    {
      "platform": "linux",
      "product": "runc",
      "release": "amzn 2023",
      "fixedVersion": "1.3.6-1.amzn2023.0.1",
      "fix": "ALAS2023-2026-2138",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2138",
      "released": "2026-09-14T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "runc",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "1.3.6-160000.1.1",
      "fix": "OPENSUSE-SU-2026:21431-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-21431-1",
      "released": "2026-07-23T13:29:15Z"
    },
    {
      "platform": "linux",
      "product": "runc",
      "release": "sles 15.6",
      "fixedVersion": "1.3.6-150000.101.1",
      "fix": "SUSE-SU-2026:3433-2",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-3433-2",
      "released": "2026-08-10T16:55:23Z"
    },
    {
      "platform": "linux",
      "product": "runc",
      "release": "sles 15.7",
      "fixedVersion": "1.3.6-150000.101.1",
      "fix": "SUSE-SU-2026:3433-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-3433-1",
      "released": "2026-07-30T18:54:39Z"
    },
    {
      "platform": "linux",
      "product": "runc",
      "release": "sles 16.0",
      "fixedVersion": "1.3.6-160000.1.1",
      "fix": "SUSE-SU-2026:22942-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-22942-1",
      "released": "2026-07-23T13:27:44Z"
    },
    {
      "platform": "linux",
      "product": "runc-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1.3.6-1.amzn2023.0.1",
      "fix": "ALAS2023-2026-2138",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2138",
      "released": "2026-09-14T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "runc-debugsource",
      "release": "amzn 2023",
      "fixedVersion": "1.3.6-1.amzn2023.0.1",
      "fix": "ALAS2023-2026-2138",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2138",
      "released": "2026-09-14T09:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T00:53:09Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}