{
  "document": {
    "aggregate_severity": {
      "text": "High"
    },
    "category": "csaf_vex",
    "csaf_version": "2.0",
    "distribution": {
      "text": "TuxCare License Agreement",
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        "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"
      }
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      "contact_details": "https://tuxcare.com/contact/",
      "name": "TuxCare",
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        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.tuxcare.com/csaf/v2/els_os/debian11els/vex/2026/cve-2026-29518-els_os-debian11els.json"
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      "generator": {
        "date": "2026-09-18T13:36:39Z",
        "engine": {
          "name": "pyCSAF"
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      },
      "id": "CVE-2026-29518-ELS_OS-DEBIAN11ELS",
      "initial_release_date": "2026-05-20T12:48:07Z",
      "revision_history": [
        {
          "date": "2026-05-20T12:48:07Z",
          "number": "1",
          "summary": "Initial version"
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        {
          "date": "2026-09-17T12:45:34Z",
          "number": "2",
          "summary": "Official Publication"
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        {
          "date": "2026-09-18T13:36:39Z",
          "number": "3",
          "summary": "Update document"
        }
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      "status": "final",
      "version": "3"
    },
    "title": "Security update on CVE-2026-29518"
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  "vulnerabilities": [
    {
      "cve": "CVE-2026-29518",
      "cwe": {
        "id": "CWE-367",
        "name": "Time-of-check Time-of-use (TOCTOU) Race Condition"
      },
      "notes": [
        {
          "category": "description",
          "text": "Rsync versions before 3.4.3 contain a time-of-check to time-of-use (TOCTOU) race condition in daemon file handling that allows attackers to redirect file writes outside intended directories by replacing parent directory components with symbolic links. Attackers with write access to a module path can exploit this race condition to create or overwrite arbitrary files, potentially modifying sensitive system files and achieving privilege escalation when the daemon runs with elevated privileges. This vulnerability can only be triggered if the chroot setting is false.",
          "title": "Vulnerability description"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
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          "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els4.arm64",
          "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els4.armel"
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          "Debian-11:rsync-0:3.2.3-4+deb11u4.arm64",
          "Debian-11:rsync-0:3.2.3-4+deb11u4.armel"
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        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://cve.tuxcare.com/els/cve/CVE-2026-29518"
        },
        {
          "category": "external",
          "summary": "https://github.com/RsyncProject/rsync/pull/895/changes/8471fdd1561049ef5f58df44a1811a50bd9a531d",
          "url": "https://github.com/RsyncProject/rsync/pull/895/changes/8471fdd1561049ef5f58df44a1811a50bd9a531d"
        },
        {
          "category": "external",
          "summary": "https://github.com/RsyncProject/rsync/releases/tag/v3.4.3",
          "url": "https://github.com/RsyncProject/rsync/releases/tag/v3.4.3"
        },
        {
          "category": "external",
          "summary": "https://michael.stapelberg.ch/posts/2026-05-24-minimal-memory-safe-go-rsync-vulns/",
          "url": "https://michael.stapelberg.ch/posts/2026-05-24-minimal-memory-safe-go-rsync-vulns/"
        },
        {
          "category": "external",
          "summary": "https://www.vulncheck.com/advisories/rsync-toctou-race-condition-allows-symlink-based-arbitrary-file-write",
          "url": "https://www.vulncheck.com/advisories/rsync-toctou-race-condition-allows-symlink-based-arbitrary-file-write"
        },
        {
          "category": "external",
          "summary": "https://access.redhat.com/errata/RHSA-2026:26332",
          "url": "https://access.redhat.com/errata/RHSA-2026:26332"
        },
        {
          "category": "external",
          "summary": "https://access.redhat.com/errata/RHSA-2026:26408",
          "url": "https://access.redhat.com/errata/RHSA-2026:26408"
        },
        {
          "category": "external",
          "summary": "https://access.redhat.com/errata/RHSA-2026:26410",
          "url": "https://access.redhat.com/errata/RHSA-2026:26410"
        },
        {
          "category": "external",
          "summary": "https://access.redhat.com/errata/RHSA-2026:29197",
          "url": "https://access.redhat.com/errata/RHSA-2026:29197"
        },
        {
          "category": "external",
          "summary": "https://access.redhat.com/errata/RHSA-2026:54769",
          "url": "https://access.redhat.com/errata/RHSA-2026:54769"
        },
        {
          "category": "external",
          "summary": "https://access.redhat.com/security/cve/CVE-2026-29518",
          "url": "https://access.redhat.com/security/cve/CVE-2026-29518"
        },
        {
          "category": "external",
          "summary": "https://bugzilla.redhat.com/show_bug.cgi?id=2469055",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2469055"
        },
        {
          "category": "external",
          "summary": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-29518.json",
          "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-29518.json"
        }
      ],
      "release_date": "2026-05-20T12:48:07Z",
      "remediations": [
        {
          "category": "none_available",
          "date": "2026-09-04T11:45:21.391626Z",
          "details": "Affected",
          "product_ids": [
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            "Debian-11:rsync-0:3.2.3-4+deb11u4.arm64",
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        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.0,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
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          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ]
    }
  ]
}