{
  "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-2026-105840: reject absolute path names in restricted mode in lrz\n  (received files) and lsz (sent files), not only in PUBDIR builds\n- CVE-2026-105841: remove the pipe mode that ran received files through a\n  shell command when lrz was invoked as rzCOMMAND\n- CVE-2026-105842: allocate the received path name with strdup() instead of\n  a fixed PATH_MAX*2 buffer, and NUL-terminate the ZFILE subpacket",
        "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-2026:1792521456",
        "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1792521456"
      },
      {
        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.tuxcare.com/csaf/v2/els_os/tuxcare9.8esu/advisories/2026/clsa-2026_1792521456.json"
      }
    ],
    "tracking": {
      "current_release_date": "2026-10-20T18:38:27Z",
      "generator": {
        "date": "2026-10-20T18:38:27Z",
        "engine": {
          "name": "pyCSAF"
        }
      },
      "id": "CLSA-2026:1792521456",
      "initial_release_date": "2026-10-20T18:38:27Z",
      "revision_history": [
        {
          "date": "2026-10-20T18:38:27Z",
          "number": "1",
          "summary": "Initial version"
        }
      ],
      "status": "final",
      "version": "1"
    },
    "title": "lrzsz: Fix of 3 CVEs"
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_name",
                "name": "AlmaLinux 9.8",
                "product": {
                  "name": "AlmaLinux 9.8",
                  "product_id": "AlmaLinux-9.8",
                  "product_identification_helper": {
                    "cpe": "cpe:2.3:o:almalinux:almalinux:9.8:*:*:*:*:*:*:*"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "AlmaLinux"
          }
        ],
        "category": "vendor",
        "name": "AlmaLinux OS Foundation"
      },
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_name",
                "name": "Rocky Linux 9.8",
                "product": {
                  "name": "Rocky Linux 9.8",
                  "product_id": "Rocky Linux-9.8",
                  "product_identification_helper": {
                    "cpe": "cpe:2.3:o:resf:rocky_linux:9.8:*:*:*:*:*:*:*"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "Rocky Linux"
          }
        ],
        "category": "vendor",
        "name": "Rocky Linux"
      },
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.aarch64",
                "product": {
                  "name": "lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.aarch64",
                  "product_id": "lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.aarch64",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/tuxcare/lrzsz@0.12.20-55.el9_8.tuxcare.els1?arch=aarch64"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "aarch64"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.x86_64",
                "product": {
                  "name": "lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.x86_64",
                  "product_id": "lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.x86_64",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/tuxcare/lrzsz@0.12.20-55.el9_8.tuxcare.els1?arch=x86_64"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "x86_64"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.i686",
                "product": {
                  "name": "lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.i686",
                  "product_id": "lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.i686",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/tuxcare/lrzsz@0.12.20-55.el9_8.tuxcare.els1?arch=i686"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "i686"
          }
        ],
        "category": "vendor",
        "name": "TuxCare"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.aarch64 as a component of AlmaLinux 9.8",
          "product_id": "AlmaLinux-9.8:lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.aarch64"
        },
        "product_reference": "lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.aarch64",
        "relates_to_product_reference": "AlmaLinux-9.8"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.x86_64 as a component of AlmaLinux 9.8",
          "product_id": "AlmaLinux-9.8:lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.x86_64"
        },
        "product_reference": "lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.x86_64",
        "relates_to_product_reference": "AlmaLinux-9.8"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.i686 as a component of AlmaLinux 9.8",
          "product_id": "AlmaLinux-9.8:lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.i686"
        },
        "product_reference": "lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.i686",
        "relates_to_product_reference": "AlmaLinux-9.8"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.aarch64 as a component of Rocky Linux 9.8",
          "product_id": "Rocky Linux-9.8:lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.aarch64"
        },
        "product_reference": "lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.aarch64",
        "relates_to_product_reference": "Rocky Linux-9.8"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.x86_64 as a component of Rocky Linux 9.8",
          "product_id": "Rocky Linux-9.8:lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.x86_64"
        },
        "product_reference": "lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.x86_64",
        "relates_to_product_reference": "Rocky Linux-9.8"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.i686 as a component of Rocky Linux 9.8",
          "product_id": "Rocky Linux-9.8:lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.i686"
        },
        "product_reference": "lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.i686",
        "relates_to_product_reference": "Rocky Linux-9.8"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-105840",
      "cwe": {
        "id": "CWE-22",
        "name": "Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')"
      },
      "notes": [
        {
          "category": "description",
          "text": "lrzsz before 0.13.0 contains a path traversal vulnerability in the lrz receive utility's restricted mode that allows malicious ZMODEM senders to write files outside the current directory using absolute pathnames. Because checkpath() in src/lrz.c only rejects '../' sequences unless built with --enable-pubdir, attackers can send files named with absolute paths to overwrite any file writable by the receiving user.",
          "title": "Vulnerability description"
        }
      ],
      "product_status": {
        "fixed": [
          "AlmaLinux-9.8:lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.aarch64",
          "AlmaLinux-9.8:lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.i686",
          "AlmaLinux-9.8:lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.x86_64",
          "Rocky Linux-9.8:lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.aarch64",
          "Rocky Linux-9.8:lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.i686",
          "Rocky Linux-9.8:lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://cve.tuxcare.com/els/cve/CVE-2026-105840"
        },
        {
          "category": "external",
          "summary": "https://ohse.de/uwe/software/lrzsz.html",
          "url": "https://ohse.de/uwe/software/lrzsz.html"
        },
        {
          "category": "external",
          "summary": "https://ohse.de/uwe/software/lrzsz/NEWS-0.13.0.html",
          "url": "https://ohse.de/uwe/software/lrzsz/NEWS-0.13.0.html"
        },
        {
          "category": "external",
          "summary": "https://www.vulncheck.com/advisories/lrzsz-before-0.13.0-path-traversal-via-lrz-restricted-mode-checkpath",
          "url": "https://www.vulncheck.com/advisories/lrzsz-before-0.13.0-path-traversal-via-lrz-restricted-mode-checkpath"
        }
      ],
      "release_date": "2026-10-06T14:17:00Z",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-10-20T18:37:38.091420Z",
          "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1792521456",
          "product_ids": [
            "AlmaLinux-9.8:lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.aarch64",
            "AlmaLinux-9.8:lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.i686",
            "AlmaLinux-9.8:lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.x86_64",
            "Rocky Linux-9.8:lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.aarch64",
            "Rocky Linux-9.8:lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.i686",
            "Rocky Linux-9.8:lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.x86_64"
          ],
          "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1792521456"
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ]
    },
    {
      "cve": "CVE-2026-105841",
      "cwe": {
        "id": "CWE-78",
        "name": "Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')"
      },
      "notes": [
        {
          "category": "description",
          "text": "lrzsz before 0.13.0 contains an OS command injection vulnerability in the lrz receive utility's pipe mode that allows remote senders to execute commands by supplying crafted filenames. When lrz runs under a suffixed name such as lrztar, procheader() in src/lrz.c passes the unescaped ZMODEM/YMODEM filename to popen(), so shell metacharacters execute as the receiving user.",
          "title": "Vulnerability description"
        }
      ],
      "product_status": {
        "fixed": [
          "AlmaLinux-9.8:lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.aarch64",
          "AlmaLinux-9.8:lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.i686",
          "AlmaLinux-9.8:lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.x86_64",
          "Rocky Linux-9.8:lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.aarch64",
          "Rocky Linux-9.8:lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.i686",
          "Rocky Linux-9.8:lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://cve.tuxcare.com/els/cve/CVE-2026-105841"
        },
        {
          "category": "external",
          "summary": "https://ohse.de/uwe/software/lrzsz.html",
          "url": "https://ohse.de/uwe/software/lrzsz.html"
        },
        {
          "category": "external",
          "summary": "https://ohse.de/uwe/software/lrzsz/NEWS-0.13.0.html",
          "url": "https://ohse.de/uwe/software/lrzsz/NEWS-0.13.0.html"
        },
        {
          "category": "external",
          "summary": "https://www.vulncheck.com/advisories/lrzsz-before-0.13.0-os-command-injection-via-lrz-pipe-mode",
          "url": "https://www.vulncheck.com/advisories/lrzsz-before-0.13.0-os-command-injection-via-lrz-pipe-mode"
        }
      ],
      "release_date": "2026-10-06T14:17:00Z",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-10-20T18:37:38.091420Z",
          "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1792521456",
          "product_ids": [
            "AlmaLinux-9.8:lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.aarch64",
            "AlmaLinux-9.8:lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.i686",
            "AlmaLinux-9.8:lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.x86_64",
            "Rocky Linux-9.8:lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.aarch64",
            "Rocky Linux-9.8:lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.i686",
            "Rocky Linux-9.8:lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.x86_64"
          ],
          "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1792521456"
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ]
    },
    {
      "cve": "CVE-2026-105842",
      "cwe": {
        "id": "CWE-122",
        "name": "Heap-based Buffer Overflow"
      },
      "notes": [
        {
          "category": "description",
          "text": "lrzsz before 0.13.0 contains a heap-based buffer overflow vulnerability in procheader() of the lrz receive utility when copying overlong sender-supplied filenames into Pathname. Malicious ZMODEM senders can supply filenames up to 8192 bytes, overflowing the buffer via sprintf() in pipe mode or strcpy() to corrupt heap memory and crash lrz.",
          "title": "Vulnerability description"
        }
      ],
      "product_status": {
        "fixed": [
          "AlmaLinux-9.8:lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.aarch64",
          "AlmaLinux-9.8:lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.i686",
          "AlmaLinux-9.8:lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.x86_64",
          "Rocky Linux-9.8:lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.aarch64",
          "Rocky Linux-9.8:lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.i686",
          "Rocky Linux-9.8:lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://cve.tuxcare.com/els/cve/CVE-2026-105842"
        },
        {
          "category": "external",
          "summary": "https://ohse.de/uwe/software/lrzsz.html",
          "url": "https://ohse.de/uwe/software/lrzsz.html"
        },
        {
          "category": "external",
          "summary": "https://ohse.de/uwe/software/lrzsz/NEWS-0.13.0.html",
          "url": "https://ohse.de/uwe/software/lrzsz/NEWS-0.13.0.html"
        },
        {
          "category": "external",
          "summary": "https://www.vulncheck.com/advisories/lrzsz-before-0.13.0-heap-buffer-overflow-via-lrz-procheader-pathname",
          "url": "https://www.vulncheck.com/advisories/lrzsz-before-0.13.0-heap-buffer-overflow-via-lrz-procheader-pathname"
        }
      ],
      "release_date": "2026-10-06T14:17:00Z",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-10-20T18:37:38.091420Z",
          "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1792521456",
          "product_ids": [
            "AlmaLinux-9.8:lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.aarch64",
            "AlmaLinux-9.8:lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.i686",
            "AlmaLinux-9.8:lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.x86_64",
            "Rocky Linux-9.8:lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.aarch64",
            "Rocky Linux-9.8:lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.i686",
            "Rocky Linux-9.8:lrzsz-0:0.12.20-55.el9_8.tuxcare.els1.x86_64"
          ],
          "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1792521456"
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ]
    }
  ]
}