{
  "document": {
    "aggregate_severity": {
      "text": "Important"
    },
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "TuxCare License Agreement",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Cloud Linux Inc. and provide a link to the original.",
        "title": "Terms of Use"
      },
      {
        "category": "details",
        "text": "CVE-2026-41579: fix /dev symlink path traversal in rootfs /dev setup",
        "title": "Details"
      }
    ],
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      "contact_details": "https://tuxcare.com/contact/",
      "name": "TuxCare",
      "namespace": "https://tuxcare.com/"
    },
    "references": [
      {
        "category": "self",
        "summary": "https://cve.tuxcare.com/els/releases/CLSA-2026:1784034091",
        "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1784034091"
      },
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        "url": "https://security.tuxcare.com/csaf/v2/els_os/almalinux9.2esu/advisories/2026/clsa-2026_1784034091.json"
      }
    ],
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      "current_release_date": "2026-07-14T13:02:22Z",
      "generator": {
        "date": "2026-07-14T13:02:22Z",
        "engine": {
          "name": "pyCSAF"
        }
      },
      "id": "CLSA-2026:1784034091",
      "initial_release_date": "2026-07-14T13:02:22Z",
      "revision_history": [
        {
          "date": "2026-07-14T13:02:22Z",
          "number": "1",
          "summary": "Initial version"
        }
      ],
      "status": "final",
      "version": "1"
    },
    "title": "runc: Fix of CVE-2026-41579"
  },
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  "vulnerabilities": [
    {
      "cve": "CVE-2026-41579",
      "cwe": {
        "id": "CWE-61",
        "name": "UNIX Symbolic Link (Symlink) Following"
      },
      "notes": [
        {
          "category": "description",
          "text": "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 symlink present in the container image — 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.",
          "title": "Vulnerability description"
        }
      ],
      "product_status": {
        "fixed": [
          "AlmaLinux-9.2:runc-4:1.2.8-1.el9_1.tuxcare.els4.x86_64"
        ],
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          "AlmaLinux-9.2:runc-4:1.1.4-1.el9_1.tuxcare.els2.x86_64",
          "AlmaLinux-9.2:runc-4:1.2.8-1.el9_1.tuxcare.els1.x86_64",
          "AlmaLinux-9.2:runc-4:1.2.8-1.el9_1.tuxcare.els2.x86_64",
          "AlmaLinux-9.2:runc-4:1.2.8-1.el9_1.tuxcare.els3.x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://cve.tuxcare.com/els/cve/CVE-2026-41579"
        },
        {
          "category": "external",
          "summary": "https://github.com/opencontainers/runc/commit/864db8042dbb",
          "url": "https://github.com/opencontainers/runc/commit/864db8042dbb"
        },
        {
          "category": "external",
          "summary": "https://github.com/opencontainers/runc/security/advisories/GHSA-xjvp-4fhw-gc47",
          "url": "https://github.com/opencontainers/runc/security/advisories/GHSA-xjvp-4fhw-gc47"
        }
      ],
      "release_date": "2026-07-01T02:17:00Z",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-07-14T13:01:34.898792Z",
          "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1784034091",
          "product_ids": [
            "AlmaLinux-9.2:runc-4:1.2.8-1.el9_1.tuxcare.els4.x86_64"
          ],
          "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1784034091"
        },
        {
          "category": "none_available",
          "date": "2026-07-01T02:17:00Z",
          "details": "Affected",
          "product_ids": [
            "AlmaLinux-9.2:runc-4:1.1.4-1.el9_1.tuxcare.els2.x86_64",
            "AlmaLinux-9.2:runc-4:1.2.8-1.el9_1.tuxcare.els1.x86_64",
            "AlmaLinux-9.2:runc-4:1.2.8-1.el9_1.tuxcare.els2.x86_64",
            "AlmaLinux-9.2:runc-4:1.2.8-1.el9_1.tuxcare.els3.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ]
    }
  ]
}