ubuntu-cve-2026-48961
Vulnerability from osv_ubuntu
Published
2026-05-27 04:16
Modified
2026-07-01 11:47
Summary
Details

IO::Compress versions from 2.207 before 2.220 for Perl ship a zipdetails CLI tool that crashes with undefined subroutine on Info-ZIP Unix Extra Field with 8-byte UID or GID. When decode_ux() in bin/zipdetails handles an Info-ZIP Unix Extra Field (tag 0x7875) with UID Size or GID Size set to 8, causing zipdetails to decode an 8-byte UID or GID value, it dispatches through decodeLitteEndian(), which calls a misnamed helper unpackValueQ. The actual function defined in the same file is unpackValue_Q (with underscore); the call raises 'Undefined subroutine &main::unpackValueQ' and the script exits with status 255. Library callers of IO::Compress and IO::Uncompress are not affected; the defect is in the bundled CLI tool.

Severity
7.3 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
N/A (UNKNOWN)
medium
References
To clipboard 

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            "binary_version": "5.40.1-7ubuntu0.1"
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            "binary_version": "5.40.1-7ubuntu0.1"
          },
          {
            "binary_name": "perl-base",
            "binary_version": "5.40.1-7ubuntu0.1"
          },
          {
            "binary_name": "perl-debug",
            "binary_version": "5.40.1-7ubuntu0.1"
          },
          {
            "binary_name": "perl-modules-5.40",
            "binary_version": "5.40.1-7ubuntu0.1"
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        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "perl",
        "purl": "pkg:deb/ubuntu/perl@5.40.1-7ubuntu0.1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
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          ],
          "type": "ECOSYSTEM"
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      ],
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        "5.40.1-6build1",
        "5.40.1-7build1",
        "5.40.1-7ubuntu0.1"
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  ],
  "aliases": [],
  "details": "IO::Compress versions from 2.207 before 2.220 for Perl ship a zipdetails CLI tool that crashes with undefined subroutine on Info-ZIP Unix Extra Field with 8-byte UID or GID. When decode_ux() in bin/zipdetails handles an Info-ZIP Unix Extra Field (tag 0x7875) with UID Size or GID Size set to 8, causing zipdetails to decode an 8-byte UID or GID value, it dispatches through decodeLitteEndian(), which calls a misnamed helper unpackValueQ. The actual function defined in the same file is unpackValue_Q (with underscore); the call raises \u0027Undefined subroutine \u0026main::unpackValueQ\u0027 and the script exits with status 255. Library callers of IO::Compress and IO::Uncompress are not affected; the defect is in the bundled CLI tool.",
  "id": "UBUNTU-CVE-2026-48961",
  "modified": "2026-07-01T11:47:43Z",
  "published": "2026-05-27T04:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-48961"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-48961"
    },
    {
      "type": "REPORT",
      "url": "https://lists.security.metacpan.org/cve-announce/msg/40434383/"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/pmqs/IO-Compress/commit/33c89d03d6e746ed2ead4f2f6570d47864c61bc7.patch"
    },
    {
      "type": "REPORT",
      "url": "https://metacpan.org/release/PMQS/IO-Compress-2.220/changes"
    },
    {
      "type": "REPORT",
      "url": "http://www.openwall.com/lists/oss-security/2026/05/27/3"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-48961"
  ]
}



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