usn-8168-2
Vulnerability from osv_ubuntu
Published
2026-04-14 18:01
Modified
2026-06-29 10:54
Summary
rustc, rustc-1.76, rustc-1.77, rustc-1.78, rustc-1.79, rustc-1.80 vulnerability
Details

USN-8168-1 fixed a vulnerability in Rust. This update provides the corresponding update to Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS and Ubuntu 20.04 LTS.

Original advisory details:

It was discovered that tar-rs embedded in rustc incorrectly handled symlinks when unpacking a tar archive. If a user or automated system were tricked into processing a specially crafted tar archive, a remote attacker could use this issue to modify permissions of arbitrary directories outside the extraction root, and possibly escalate privileges.

References
To clipboard 

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        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "rustc-1.79",
        "purl": "pkg:deb/ubuntu/rustc-1.79@1.79.0+dfsg1ubuntu1~bpo0-0ubuntu0.20.04.3?arch=source\u0026distro=esm-infra/focal"
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            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.79.0+dfsg1ubuntu1~bpo0-0ubuntu0.20.04.1"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [],
          "ecosystem": "Ubuntu:Pro:20.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "cargo-1.80",
            "binary_version": "1.80.1+dfsg0ubuntu1~bpo0-0ubuntu0.20.04.1"
          },
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            "binary_name": "libstd-rust-1.80",
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            "binary_name": "rust-1.80-all",
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            "binary_name": "rust-1.80-clippy",
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            "binary_version": "1.80.1+dfsg0ubuntu1~bpo0-0ubuntu0.20.04.1"
          },
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            "binary_version": "1.80.1+dfsg0ubuntu1~bpo0-0ubuntu0.20.04.1"
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        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "rustc-1.80",
        "purl": "pkg:deb/ubuntu/rustc-1.80@1.80.1+dfsg0ubuntu1~bpo0-0ubuntu0.20.04.1?arch=source\u0026distro=esm-infra/focal"
      },
      "ranges": [
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            },
            {
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            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.80.1+dfsg0ubuntu1~bpo0-0ubuntu0.20.04"
      ]
    }
  ],
  "aliases": [],
  "details": "USN-8168-1 fixed a vulnerability in Rust. This update provides the\ncorresponding update to Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04\nLTS and Ubuntu 20.04 LTS.\n\nOriginal advisory details:\n\n It was discovered that tar-rs embedded in rustc incorrectly handled\n symlinks when unpacking a tar archive. If a user or automated system were\n tricked into processing a specially crafted tar archive, a remote attacker\n could use this issue to modify permissions of arbitrary directories\n outside the extraction root, and possibly escalate privileges.",
  "id": "USN-8168-2",
  "modified": "2026-06-29T10:54:17Z",
  "published": "2026-04-14T18:01:04Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8168-2"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-33056"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "rustc, rustc-1.76, rustc-1.77, rustc-1.78, rustc-1.79, rustc-1.80\nvulnerability",
  "upstream": [
    "UBUNTU-CVE-2026-33056"
  ]
}



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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.