USN-8139-1

It was discovered that tar-rs embedded in cargo-c 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

Affected packages

Ubuntu:25.10 / rust-cargo-c

Package

Name: rust-cargo-c
Purl: pkg:deb/ubuntu/rust-cargo-c@0.10.11-1ubuntu1.1?arch=source&distro=questing

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

0.10.11-1ubuntu1.1

Affected versions

0.*

0.10.11-1ubuntu1

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "0.10.11-1ubuntu1.1",
            "binary_name": "cargo-c"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8139-1.json"

cves_map

{
    "ecosystem": "Ubuntu:25.10",
    "cves": [
        {
            "id": "CVE-2026-33056",
            "severity": [
                {
                    "type": "CVSS_V4",
                    "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N"
                },
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ]
}