{
  "document": {
    "aggregate_severity": {
      "text": "Critical"
    },
    "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": "* SECURITY UPDATE: --delete scope expansion by a malicious sender\n     - debian/patches/CVE-2026-53789.patch: downgrade implied-parent\n       directories to FLAG_IMPLIED_DIR on the receiver, covering synthetic and\n       legacy implied parents, so a sender cannot mark a parent as a content\n       dir and have delete_in_dir() sweep pre-existing siblings. The\n       parse_filter_file() module-dir strip that upstream bundled into the\n       same commit is not taken here: it is the CVE-2026-53786 fix per\n       upstream NEWS and ships in debian/patches/CVE-2026-53786.patch\n     - the patch's two regression tests are rewritten against this tree's shell\n       testsuite, as upstream's pytest-based ones need a harness 3.2.3 does not\n       have; debian/control gains python3 <!nocheck> in Build-Depends for them\n     - CVE-2026-53789",
        "title": "Details"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "https://tuxcare.com/contact/",
      "name": "TuxCare",
      "namespace": "https://tuxcare.com/"
    },
    "references": [
      {
        "category": "self",
        "summary": "https://cve.tuxcare.com/els/releases/CLSA-2026:1790328600",
        "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1790328600"
      },
      {
        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.tuxcare.com/csaf/v2/els_os/debian11els/advisories/2026/clsa-2026_1790328600.json"
      }
    ],
    "tracking": {
      "current_release_date": "2026-09-28T09:02:09Z",
      "generator": {
        "date": "2026-09-28T09:02:09Z",
        "engine": {
          "name": "pyCSAF"
        }
      },
      "id": "CLSA-2026:1790328600",
      "initial_release_date": "2026-09-25T09:30:45Z",
      "revision_history": [
        {
          "date": "2026-09-25T09:30:45Z",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2026-09-28T09:02:09Z",
          "number": "2",
          "summary": "Update document"
        }
      ],
      "status": "final",
      "version": "2"
    },
    "title": "Fix CVE(s): CVE-2026-53789"
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_name",
                "name": "Debian 11",
                "product": {
                  "name": "Debian 11",
                  "product_id": "Debian-11",
                  "product_identification_helper": {
                    "cpe": "cpe:2.3:o:debian:debian_linux:11:*:*:*:*:*:*:*"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "Debian"
          }
        ],
        "category": "vendor",
        "name": "Software in the Public Interest, Inc."
      },
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "rsync-0:3.2.3-4+deb11u4+tuxcare.els5.armel",
                "product": {
                  "name": "rsync-0:3.2.3-4+deb11u4+tuxcare.els5.armel",
                  "product_id": "rsync-0:3.2.3-4+deb11u4+tuxcare.els5.armel",
                  "product_identification_helper": {
                    "purl": "pkg:deb/tuxcare/rsync@3.2.3-4%2Bdeb11u4%2Btuxcare.els5?arch=armel"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "rsync-0:3.2.3-4+deb11u4+tuxcare.els4.armel",
                "product": {
                  "name": "rsync-0:3.2.3-4+deb11u4+tuxcare.els4.armel",
                  "product_id": "rsync-0:3.2.3-4+deb11u4+tuxcare.els4.armel",
                  "product_identification_helper": {
                    "purl": "pkg:deb/tuxcare/rsync@3.2.3-4%2Bdeb11u4%2Btuxcare.els4?arch=armel"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "rsync-0:3.2.3-4+deb11u4+tuxcare.els3.armel",
                "product": {
                  "name": "rsync-0:3.2.3-4+deb11u4+tuxcare.els3.armel",
                  "product_id": "rsync-0:3.2.3-4+deb11u4+tuxcare.els3.armel",
                  "product_identification_helper": {
                    "purl": "pkg:deb/tuxcare/rsync@3.2.3-4%2Bdeb11u4%2Btuxcare.els3?arch=armel"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "armel"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "rsync-0:3.2.3-4+deb11u4+tuxcare.els5.arm64",
                "product": {
                  "name": "rsync-0:3.2.3-4+deb11u4+tuxcare.els5.arm64",
                  "product_id": "rsync-0:3.2.3-4+deb11u4+tuxcare.els5.arm64",
                  "product_identification_helper": {
                    "purl": "pkg:deb/tuxcare/rsync@3.2.3-4%2Bdeb11u4%2Btuxcare.els5?arch=arm64"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "rsync-0:3.2.3-4+deb11u4+tuxcare.els4.arm64",
                "product": {
                  "name": "rsync-0:3.2.3-4+deb11u4+tuxcare.els4.arm64",
                  "product_id": "rsync-0:3.2.3-4+deb11u4+tuxcare.els4.arm64",
                  "product_identification_helper": {
                    "purl": "pkg:deb/tuxcare/rsync@3.2.3-4%2Bdeb11u4%2Btuxcare.els4?arch=arm64"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "rsync-0:3.2.3-4+deb11u4+tuxcare.els3.arm64",
                "product": {
                  "name": "rsync-0:3.2.3-4+deb11u4+tuxcare.els3.arm64",
                  "product_id": "rsync-0:3.2.3-4+deb11u4+tuxcare.els3.arm64",
                  "product_identification_helper": {
                    "purl": "pkg:deb/tuxcare/rsync@3.2.3-4%2Bdeb11u4%2Btuxcare.els3?arch=arm64"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "arm64"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "rsync-0:3.2.3-4+deb11u4+tuxcare.els5.amd64",
                "product": {
                  "name": "rsync-0:3.2.3-4+deb11u4+tuxcare.els5.amd64",
                  "product_id": "rsync-0:3.2.3-4+deb11u4+tuxcare.els5.amd64",
                  "product_identification_helper": {
                    "purl": "pkg:deb/tuxcare/rsync@3.2.3-4%2Bdeb11u4%2Btuxcare.els5?arch=amd64"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "rsync-0:3.2.3-4+deb11u4+tuxcare.els4.amd64",
                "product": {
                  "name": "rsync-0:3.2.3-4+deb11u4+tuxcare.els4.amd64",
                  "product_id": "rsync-0:3.2.3-4+deb11u4+tuxcare.els4.amd64",
                  "product_identification_helper": {
                    "purl": "pkg:deb/tuxcare/rsync@3.2.3-4%2Bdeb11u4%2Btuxcare.els4?arch=amd64"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "rsync-0:3.2.3-4+deb11u4+tuxcare.els3.amd64",
                "product": {
                  "name": "rsync-0:3.2.3-4+deb11u4+tuxcare.els3.amd64",
                  "product_id": "rsync-0:3.2.3-4+deb11u4+tuxcare.els3.amd64",
                  "product_identification_helper": {
                    "purl": "pkg:deb/tuxcare/rsync@3.2.3-4%2Bdeb11u4%2Btuxcare.els3?arch=amd64"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "amd64"
          }
        ],
        "category": "vendor",
        "name": "TuxCare"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "rsync-0:3.2.3-4+deb11u4+tuxcare.els5.armel as a component of Debian 11",
          "product_id": "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els5.armel"
        },
        "product_reference": "rsync-0:3.2.3-4+deb11u4+tuxcare.els5.armel",
        "relates_to_product_reference": "Debian-11"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "rsync-0:3.2.3-4+deb11u4+tuxcare.els5.arm64 as a component of Debian 11",
          "product_id": "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els5.arm64"
        },
        "product_reference": "rsync-0:3.2.3-4+deb11u4+tuxcare.els5.arm64",
        "relates_to_product_reference": "Debian-11"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "rsync-0:3.2.3-4+deb11u4+tuxcare.els5.amd64 as a component of Debian 11",
          "product_id": "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els5.amd64"
        },
        "product_reference": "rsync-0:3.2.3-4+deb11u4+tuxcare.els5.amd64",
        "relates_to_product_reference": "Debian-11"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "rsync-0:3.2.3-4+deb11u4+tuxcare.els4.arm64 as a component of Debian 11",
          "product_id": "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els4.arm64"
        },
        "product_reference": "rsync-0:3.2.3-4+deb11u4+tuxcare.els4.arm64",
        "relates_to_product_reference": "Debian-11"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "rsync-0:3.2.3-4+deb11u4+tuxcare.els4.armel as a component of Debian 11",
          "product_id": "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els4.armel"
        },
        "product_reference": "rsync-0:3.2.3-4+deb11u4+tuxcare.els4.armel",
        "relates_to_product_reference": "Debian-11"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "rsync-0:3.2.3-4+deb11u4+tuxcare.els4.amd64 as a component of Debian 11",
          "product_id": "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els4.amd64"
        },
        "product_reference": "rsync-0:3.2.3-4+deb11u4+tuxcare.els4.amd64",
        "relates_to_product_reference": "Debian-11"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "rsync-0:3.2.3-4+deb11u4+tuxcare.els3.armel as a component of Debian 11",
          "product_id": "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els3.armel"
        },
        "product_reference": "rsync-0:3.2.3-4+deb11u4+tuxcare.els3.armel",
        "relates_to_product_reference": "Debian-11"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "rsync-0:3.2.3-4+deb11u4+tuxcare.els3.amd64 as a component of Debian 11",
          "product_id": "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els3.amd64"
        },
        "product_reference": "rsync-0:3.2.3-4+deb11u4+tuxcare.els3.amd64",
        "relates_to_product_reference": "Debian-11"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "rsync-0:3.2.3-4+deb11u4+tuxcare.els3.arm64 as a component of Debian 11",
          "product_id": "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els3.arm64"
        },
        "product_reference": "rsync-0:3.2.3-4+deb11u4+tuxcare.els3.arm64",
        "relates_to_product_reference": "Debian-11"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-53789",
      "cwe": {
        "id": "CWE-807",
        "name": "Reliance on Untrusted Inputs in a Security Decision"
      },
      "notes": [
        {
          "category": "description",
          "text": "rsync before 3.5.0 contains an improper path handling vulnerability that allows a malicious sender to expand the scope of --delete operations beyond the intended destination subtree by sending a crafted file list that causes rsync to reclassify implied parent directory entries or treat synthetic paths as the transfer root. Attackers can exploit multiple variants including implied parent reclassification, synthetic root path construction, legacy protocol behavior below version 30, and non-directory root handling to cause the receiver to delete files outside the authorized destination directory.",
          "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"
        }
      ],
      "product_status": {
        "fixed": [
          "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els5.amd64",
          "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els5.arm64",
          "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els5.armel"
        ],
        "known_affected": [
          "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els3.amd64",
          "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els3.arm64",
          "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els3.armel",
          "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els4.amd64",
          "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els4.arm64",
          "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els4.armel"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://cve.tuxcare.com/els/cve/CVE-2026-53789"
        },
        {
          "category": "external",
          "summary": "https://github.com/RsyncProject/rsync/releases/tag/v3.5.0",
          "url": "https://github.com/RsyncProject/rsync/releases/tag/v3.5.0"
        },
        {
          "category": "external",
          "summary": "https://github.com/RsyncProject/rsync/security/advisories/GHSA-fxwg-7hmf-xh5q",
          "url": "https://github.com/RsyncProject/rsync/security/advisories/GHSA-fxwg-7hmf-xh5q"
        },
        {
          "category": "external",
          "summary": "https://www.vulncheck.com/advisories/rsync-arbitrary-file-deletion-via-malicious-file-list",
          "url": "https://www.vulncheck.com/advisories/rsync-arbitrary-file-deletion-via-malicious-file-list"
        }
      ],
      "release_date": "2026-08-13T15:19:00Z",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-09-25T09:30:02.677607Z",
          "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1790328600",
          "product_ids": [
            "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els5.amd64",
            "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els5.arm64",
            "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els5.armel"
          ],
          "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1790328600"
        },
        {
          "category": "none_available",
          "date": "2026-08-13T15:19:00Z",
          "details": "Affected",
          "product_ids": [
            "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els3.amd64",
            "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els3.arm64",
            "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els3.armel",
            "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els4.amd64",
            "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els4.arm64",
            "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els4.armel"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els3.amd64",
            "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els3.arm64",
            "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els3.armel",
            "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els4.amd64",
            "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els4.arm64",
            "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els4.armel"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ]
    },
    {
      "cve": "CVE-2026-70457",
      "cwe": {
        "id": "CWE-131",
        "name": "Incorrect Calculation of Buffer Size"
      },
      "notes": [
        {
          "category": "description",
          "text": "rsync 3.2.3 before 3.5.0 contains an out-of-bounds write in parse_size_arg() where the return value of snprintf() is used directly as an index into a .bss-segment array without bounds checking. When snprintf truncates the formatted size string, the return value equals the number of characters that would have been written including the truncated portion, and this value may exceed the array length. The subsequent indexed write targets memory outside the intended array bounds, corrupting .bss memory.",
          "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"
        }
      ],
      "product_status": {
        "fixed": [
          "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els5.amd64",
          "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els5.arm64",
          "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els5.armel"
        ],
        "known_affected": [
          "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els3.amd64",
          "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els3.arm64",
          "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els3.armel",
          "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els4.amd64",
          "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els4.arm64",
          "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els4.armel"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://cve.tuxcare.com/els/cve/CVE-2026-70457"
        },
        {
          "category": "external",
          "summary": "https://github.com/RsyncProject/rsync/releases/tag/v3.5.0",
          "url": "https://github.com/RsyncProject/rsync/releases/tag/v3.5.0"
        },
        {
          "category": "external",
          "summary": "https://github.com/RsyncProject/rsync/security/advisories/GHSA-pg7g-xqmr-xpfh",
          "url": "https://github.com/RsyncProject/rsync/security/advisories/GHSA-pg7g-xqmr-xpfh"
        },
        {
          "category": "external",
          "summary": "https://www.vulncheck.com/advisories/rsync-out-of-bounds-write-via-parse-size-arg",
          "url": "https://www.vulncheck.com/advisories/rsync-out-of-bounds-write-via-parse-size-arg"
        }
      ],
      "release_date": "2026-08-13T15:19:00Z",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-09-25T09:30:02.677607Z",
          "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1790328600",
          "product_ids": [
            "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els5.amd64",
            "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els5.arm64",
            "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els5.armel"
          ],
          "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1790328600"
        },
        {
          "category": "none_available",
          "date": "2026-08-13T15:19:00Z",
          "details": "Affected",
          "product_ids": [
            "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els3.amd64",
            "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els3.arm64",
            "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els3.armel",
            "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els4.amd64",
            "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els4.arm64",
            "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els4.armel"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.2,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H",
            "version": "3.1"
          },
          "products": [
            "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els3.amd64",
            "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els3.arm64",
            "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els3.armel",
            "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els4.amd64",
            "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els4.arm64",
            "Debian-11:rsync-0:3.2.3-4+deb11u4+tuxcare.els4.armel"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ]
    }
  ]
}