SUSE-SU-2026:23355-1

Vulnerability from csaf_suse - Published: 2026-08-28 11:00 - Updated: 2026-09-17 16:19
Summary
Security update for cpio
Severity
Moderate
Notes
Title of the patch: Security update for cpio
Description of the patch: This update for cpio fixes the following issues: - CVE-2026-66484: improper sanitization in the tar archive extraction functionality allows for the creation of hard links outside intended directory via malicious tar archives (bsc#1274856). - CVE-2026-66485: improper memory management in the `make_path` function when allocating memory allows for denial of service via crafted archives (bsc#1274857). - CVE-2026-66486: improper encoding or escaping of output in the archive member listing functionality allows for terminal control sequence injection via crafted archive member names (bsc#1274858).
Patchnames: SUSE-SLE-Micro-6.1-694
Terms of use: CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
CVE-2026-66484
3.3 (Low)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Affected products
Product Identifier Version Remediation
Unresolved product id: SUSE Linux Micro 6.1:cpio-0:2.15-slfo.1.1_3.1.aarch64 —
Vendor Fix
Unresolved product id: SUSE Linux Micro 6.1:cpio-0:2.15-slfo.1.1_3.1.ppc64le —
Vendor Fix
Unresolved product id: SUSE Linux Micro 6.1:cpio-0:2.15-slfo.1.1_3.1.s390x —
Vendor Fix
Unresolved product id: SUSE Linux Micro 6.1:cpio-0:2.15-slfo.1.1_3.1.x86_64 —
Vendor Fix
Threats
Impact moderate
CVE-2026-66485
5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H
Affected products
Recommended 4 products, the same list as for CVE-2026-66484
Threats
Impact moderate
CVE-2026-66486
3.3 (Low)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Affected products
Recommended 4 products, the same list as for CVE-2026-66484
Threats
Impact moderate
References
To clipboard 

{
  "document": {
    "aggregate_severity": {
      "namespace": "https://www.suse.com/support/security/rating/",
      "text": "moderate"
    },
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Copyright 2024 SUSE LLC. All rights reserved.",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en",
    "notes": [
      {
        "category": "summary",
        "text": "Security update for cpio",
        "title": "Title of the patch"
      },
      {
        "category": "description",
        "text": "This update for cpio fixes the following issues:\n\n- CVE-2026-66484: improper sanitization in the tar archive extraction functionality allows for the creation of hard\n  links outside intended directory via malicious tar archives (bsc#1274856).\n- CVE-2026-66485: improper memory management in the `make_path` function when allocating memory allows for denial of\n  service via crafted archives (bsc#1274857).\n- CVE-2026-66486: improper encoding or escaping of output in the archive member listing functionality allows for\n  terminal control sequence injection via crafted archive member names (bsc#1274858).\n",
        "title": "Description of the patch"
      },
      {
        "category": "details",
        "text": "SUSE-SLE-Micro-6.1-694",
        "title": "Patchnames"
      },
      {
        "category": "legal_disclaimer",
        "text": "CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).",
        "title": "Terms of use"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "https://www.suse.com/support/security/contact/",
      "name": "SUSE Product Security Team",
      "namespace": "https://www.suse.com/"
    },
    "references": [
      {
        "category": "external",
        "summary": "SUSE ratings",
        "url": "https://www.suse.com/support/security/rating/"
      },
      {
        "category": "self",
        "summary": "URL of this CSAF notice",
        "url": "https://ftp.suse.com/pub/projects/security/csaf/suse-su-2026_23355-1.json"
      },
      {
        "category": "self",
        "summary": "URL for SUSE-SU-2026:23355-1",
        "url": "https://www.suse.com/support/update/announcement/2026/suse-su-202623355-1/"
      },
      {
        "category": "self",
        "summary": "E-Mail link for SUSE-SU-2026:23355-1",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-August/028705.html"
      },
      {
        "category": "self",
        "summary": "SUSE Bug 1274856",
        "url": "https://bugzilla.suse.com/1274856"
      },
      {
        "category": "self",
        "summary": "SUSE Bug 1274857",
        "url": "https://bugzilla.suse.com/1274857"
      },
      {
        "category": "self",
        "summary": "SUSE Bug 1274858",
        "url": "https://bugzilla.suse.com/1274858"
      },
      {
        "category": "self",
        "summary": "SUSE CVE CVE-2026-66484 page",
        "url": "https://www.suse.com/security/cve/CVE-2026-66484/"
      },
      {
        "category": "self",
        "summary": "SUSE CVE CVE-2026-66485 page",
        "url": "https://www.suse.com/security/cve/CVE-2026-66485/"
      },
      {
        "category": "self",
        "summary": "SUSE CVE CVE-2026-66486 page",
        "url": "https://www.suse.com/security/cve/CVE-2026-66486/"
      }
    ],
    "title": "Security update for cpio",
    "tracking": {
      "current_release_date": "2026-09-17T16:19:31Z",
      "generator": {
        "date": "2026-08-28T11:00:05Z",
        "engine": {
          "name": "cve-database.git:bin/generate-csaf.pl",
          "version": "1"
        }
      },
      "id": "SUSE-SU-2026:23355-1",
      "initial_release_date": "2026-08-28T11:00:05Z",
      "revision_history": [
        {
          "date": "2026-08-28T11:00:05Z",
          "number": "1",
          "summary": "Current version"
        },
        {
          "date": "2026-09-16T19:27:31Z",
          "number": "2",
          "summary": "unknown changes"
        },
        {
          "date": "2026-09-16T20:14:52Z",
          "number": "3",
          "summary": "unknown changes"
        },
        {
          "date": "2026-09-17T16:19:31Z",
          "number": "4",
          "summary": "unknown changes"
        }
      ],
      "status": "final",
      "version": "4"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "cpio-0:2.15-slfo.1.1_3.1.aarch64",
                "product": {
                  "name": "cpio-0:2.15-slfo.1.1_3.1.aarch64",
                  "product_id": "cpio-0:2.15-slfo.1.1_3.1.aarch64",
                  "product_identification_helper": {
                    "cpe": "cpe:2.3:a:gnu:cpio:2.15:*:*:*:*:*:*:*",
                    "purl": "pkg:rpm/suse/cpio@2.15-slfo.1.1_3.1?arch=aarch64\u0026upstream=cpio-0:2.15-slfo.1.1_3.1.src.rpm"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "aarch64"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "cpio-0:2.15-slfo.1.1_3.1.ppc64le",
                "product": {
                  "name": "cpio-0:2.15-slfo.1.1_3.1.ppc64le",
                  "product_id": "cpio-0:2.15-slfo.1.1_3.1.ppc64le",
                  "product_identification_helper": {
                    "cpe": "cpe:2.3:a:gnu:cpio:2.15:*:*:*:*:*:*:*",
                    "purl": "pkg:rpm/suse/cpio@2.15-slfo.1.1_3.1?arch=ppc64le\u0026upstream=cpio-0:2.15-slfo.1.1_3.1.src.rpm"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "ppc64le"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "cpio-0:2.15-slfo.1.1_3.1.s390x",
                "product": {
                  "name": "cpio-0:2.15-slfo.1.1_3.1.s390x",
                  "product_id": "cpio-0:2.15-slfo.1.1_3.1.s390x",
                  "product_identification_helper": {
                    "cpe": "cpe:2.3:a:gnu:cpio:2.15:*:*:*:*:*:*:*",
                    "purl": "pkg:rpm/suse/cpio@2.15-slfo.1.1_3.1?arch=s390x\u0026upstream=cpio-0:2.15-slfo.1.1_3.1.src.rpm"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "s390x"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "cpio-0:2.15-slfo.1.1_3.1.x86_64",
                "product": {
                  "name": "cpio-0:2.15-slfo.1.1_3.1.x86_64",
                  "product_id": "cpio-0:2.15-slfo.1.1_3.1.x86_64",
                  "product_identification_helper": {
                    "cpe": "cpe:2.3:a:gnu:cpio:2.15:*:*:*:*:*:*:*",
                    "purl": "pkg:rpm/suse/cpio@2.15-slfo.1.1_3.1?arch=x86_64\u0026upstream=cpio-0:2.15-slfo.1.1_3.1.src.rpm"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "x86_64"
          },
          {
            "branches": [
              {
                "category": "product_name",
                "name": "SUSE Linux Micro 6.1",
                "product": {
                  "name": "SUSE Linux Micro 6.1",
                  "product_id": "SUSE Linux Micro 6.1",
                  "product_identification_helper": {
                    "cpe": "cpe:/o:suse:sl-micro:6.1"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "SUSE Linux Enterprise"
          }
        ],
        "category": "vendor",
        "name": "SUSE"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "cpio-0:2.15-slfo.1.1_3.1.aarch64 as component of SUSE Linux Micro 6.1",
          "product_id": "SUSE Linux Micro 6.1:cpio-0:2.15-slfo.1.1_3.1.aarch64"
        },
        "product_reference": "cpio-0:2.15-slfo.1.1_3.1.aarch64",
        "relates_to_product_reference": "SUSE Linux Micro 6.1"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "cpio-0:2.15-slfo.1.1_3.1.ppc64le as component of SUSE Linux Micro 6.1",
          "product_id": "SUSE Linux Micro 6.1:cpio-0:2.15-slfo.1.1_3.1.ppc64le"
        },
        "product_reference": "cpio-0:2.15-slfo.1.1_3.1.ppc64le",
        "relates_to_product_reference": "SUSE Linux Micro 6.1"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "cpio-0:2.15-slfo.1.1_3.1.s390x as component of SUSE Linux Micro 6.1",
          "product_id": "SUSE Linux Micro 6.1:cpio-0:2.15-slfo.1.1_3.1.s390x"
        },
        "product_reference": "cpio-0:2.15-slfo.1.1_3.1.s390x",
        "relates_to_product_reference": "SUSE Linux Micro 6.1"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "cpio-0:2.15-slfo.1.1_3.1.x86_64 as component of SUSE Linux Micro 6.1",
          "product_id": "SUSE Linux Micro 6.1:cpio-0:2.15-slfo.1.1_3.1.x86_64"
        },
        "product_reference": "cpio-0:2.15-slfo.1.1_3.1.x86_64",
        "relates_to_product_reference": "SUSE Linux Micro 6.1"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-66484",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2026-66484"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "GNU cpio contains a Path Traversal vulnerability in its tar archive extraction functionality. When extracting a tar archive in copy-in mode with the --no-absolute-filenames option, the extracted file name is normalized but the tar hard-link target is passed to the link_to_name function without equivalent sanitization before calling link function. A tar archive provided by an attacker, containing a hard-link entry whose linkname is set to an absolute path outside the extraction directory, can cause cpio to create a hard link to an existing file outside the intended extraction directory, breaking the expected guarantee of --no-absolute-filenames and allowing archive-controlled linkage to external files.\n\nThis issue has been fixed in commit e2b9cbdd3354d2b1569b7390d1bc15c1930559ad",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "recommended": [
          "SUSE Linux Micro 6.1:cpio-0:2.15-slfo.1.1_3.1.aarch64",
          "SUSE Linux Micro 6.1:cpio-0:2.15-slfo.1.1_3.1.ppc64le",
          "SUSE Linux Micro 6.1:cpio-0:2.15-slfo.1.1_3.1.s390x",
          "SUSE Linux Micro 6.1:cpio-0:2.15-slfo.1.1_3.1.x86_64"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2026-66484",
          "url": "https://www.suse.com/security/cve/CVE-2026-66484"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1274856 for CVE-2026-66484",
          "url": "https://bugzilla.suse.com/1274856"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1274857 for CVE-2026-66484",
          "url": "https://bugzilla.suse.com/1274857"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1274858 for CVE-2026-66484",
          "url": "https://bugzilla.suse.com/1274858"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
          "product_ids": [
            "SUSE Linux Micro 6.1:cpio-0:2.15-slfo.1.1_3.1.aarch64",
            "SUSE Linux Micro 6.1:cpio-0:2.15-slfo.1.1_3.1.ppc64le",
            "SUSE Linux Micro 6.1:cpio-0:2.15-slfo.1.1_3.1.s390x",
            "SUSE Linux Micro 6.1:cpio-0:2.15-slfo.1.1_3.1.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 3.3,
            "baseSeverity": "LOW",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N",
            "version": "3.1"
          },
          "products": [
            "SUSE Linux Micro 6.1:cpio-0:2.15-slfo.1.1_3.1.aarch64",
            "SUSE Linux Micro 6.1:cpio-0:2.15-slfo.1.1_3.1.ppc64le",
            "SUSE Linux Micro 6.1:cpio-0:2.15-slfo.1.1_3.1.s390x",
            "SUSE Linux Micro 6.1:cpio-0:2.15-slfo.1.1_3.1.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2026-08-28T11:00:05Z",
          "details": "moderate"
        }
      ],
      "title": "CVE-2026-66484"
    },
    {
      "cve": "CVE-2026-66485",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2026-66485"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "GNU cpio is vulnerable to an uncontrolled memory allocation in the make_path function at src/makepath.c. The function uses alloca to allocate stack memory based on the length of argpath, which is derived from an archive-controlled pathname during extraction. A malicious cpio archive containing a sufficiently long nested pathname causes an unbounded stack allocation, resulting in a stack overflow and crash of the cpio process. An attacker who can supply a crafted cpio archive to a victim who extracts it can cause a denial of service.\n\nThis issue has been fixed in commit 3cd514031371d8aeeaf2048aa10103e02831aaa9",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "recommended": [
          "SUSE Linux Micro 6.1:cpio-0:2.15-slfo.1.1_3.1.aarch64",
          "SUSE Linux Micro 6.1:cpio-0:2.15-slfo.1.1_3.1.ppc64le",
          "SUSE Linux Micro 6.1:cpio-0:2.15-slfo.1.1_3.1.s390x",
          "SUSE Linux Micro 6.1:cpio-0:2.15-slfo.1.1_3.1.x86_64"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2026-66485",
          "url": "https://www.suse.com/security/cve/CVE-2026-66485"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1274857 for CVE-2026-66485",
          "url": "https://bugzilla.suse.com/1274857"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
          "product_ids": [
            "SUSE Linux Micro 6.1:cpio-0:2.15-slfo.1.1_3.1.aarch64",
            "SUSE Linux Micro 6.1:cpio-0:2.15-slfo.1.1_3.1.ppc64le",
            "SUSE Linux Micro 6.1:cpio-0:2.15-slfo.1.1_3.1.s390x",
            "SUSE Linux Micro 6.1:cpio-0:2.15-slfo.1.1_3.1.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 5,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "SUSE Linux Micro 6.1:cpio-0:2.15-slfo.1.1_3.1.aarch64",
            "SUSE Linux Micro 6.1:cpio-0:2.15-slfo.1.1_3.1.ppc64le",
            "SUSE Linux Micro 6.1:cpio-0:2.15-slfo.1.1_3.1.s390x",
            "SUSE Linux Micro 6.1:cpio-0:2.15-slfo.1.1_3.1.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2026-08-28T11:00:05Z",
          "details": "moderate"
        }
      ],
      "title": "CVE-2026-66485"
    },
    {
      "cve": "CVE-2026-66486",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2026-66486"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "GNU cpio is vulnerable to improper encoding or escaping of output in its archive member listing functionality. When listing archive members via cpio -it, member names are printed directly to output without quoting or escaping. An attacker can craft a cpio archive containing member names with embedded newline characters or ANSI escape sequences, causing forged listing entries or terminal control sequence injection when the listing is displayed.\n\n\n\n\nThis issue has been fixed in commit 2ff9600c9ef32e88759843cdbde74c8db5ae9b30",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "recommended": [
          "SUSE Linux Micro 6.1:cpio-0:2.15-slfo.1.1_3.1.aarch64",
          "SUSE Linux Micro 6.1:cpio-0:2.15-slfo.1.1_3.1.ppc64le",
          "SUSE Linux Micro 6.1:cpio-0:2.15-slfo.1.1_3.1.s390x",
          "SUSE Linux Micro 6.1:cpio-0:2.15-slfo.1.1_3.1.x86_64"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2026-66486",
          "url": "https://www.suse.com/security/cve/CVE-2026-66486"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1274858 for CVE-2026-66486",
          "url": "https://bugzilla.suse.com/1274858"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
          "product_ids": [
            "SUSE Linux Micro 6.1:cpio-0:2.15-slfo.1.1_3.1.aarch64",
            "SUSE Linux Micro 6.1:cpio-0:2.15-slfo.1.1_3.1.ppc64le",
            "SUSE Linux Micro 6.1:cpio-0:2.15-slfo.1.1_3.1.s390x",
            "SUSE Linux Micro 6.1:cpio-0:2.15-slfo.1.1_3.1.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 3.3,
            "baseSeverity": "LOW",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N",
            "version": "3.1"
          },
          "products": [
            "SUSE Linux Micro 6.1:cpio-0:2.15-slfo.1.1_3.1.aarch64",
            "SUSE Linux Micro 6.1:cpio-0:2.15-slfo.1.1_3.1.ppc64le",
            "SUSE Linux Micro 6.1:cpio-0:2.15-slfo.1.1_3.1.s390x",
            "SUSE Linux Micro 6.1:cpio-0:2.15-slfo.1.1_3.1.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2026-08-28T11:00:05Z",
          "details": "moderate"
        }
      ],
      "title": "CVE-2026-66486"
    }
  ]
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.