usn-8467-2
Vulnerability from osv_ubuntu
Published
2026-07-02 06:15
Modified
2026-07-02 06:15
Summary
perl vulnerabilities
Details

USN-8467-1 fixed vulnerabilities in Perl. This update provides the corresponding fix for Perl on Ubuntu 25.10.

Original advisory details: It was discovered that Perl's Archive::Tar module incorrectly handled symlink and hardlink targets during extraction. An attacker could use this issue to read or overwrite arbitrary files outside the extraction directory. (CVE-2026-42496) It was discovered that Perl had a heap buffer overflow when compiling regular expressions with a repeated fixed string on 32-bit builds. An attacker could use this issue to cause a denial of service or possibly execute arbitrary code. (CVE-2026-8376)

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2026-8376",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "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"
                }
              ]
            },
            {
              "id": "CVE-2026-42496",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:25.10"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libperl5.40",
            "binary_version": "5.40.1-6ubuntu0.1"
          },
          {
            "binary_name": "perl",
            "binary_version": "5.40.1-6ubuntu0.1"
          },
          {
            "binary_name": "perl-base",
            "binary_version": "5.40.1-6ubuntu0.1"
          },
          {
            "binary_name": "perl-debug",
            "binary_version": "5.40.1-6ubuntu0.1"
          },
          {
            "binary_name": "perl-modules-5.40",
            "binary_version": "5.40.1-6ubuntu0.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "perl",
        "purl": "pkg:deb/ubuntu/perl@5.40.1-6ubuntu0.1?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.40.1-6ubuntu0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.40.1-2",
        "5.40.1-3",
        "5.40.1-5",
        "5.40.1-6",
        "5.40.1-6build1"
      ]
    }
  ],
  "aliases": [],
  "details": "USN-8467-1 fixed vulnerabilities in Perl. This update provides the\ncorresponding fix for Perl on Ubuntu 25.10.\n\nOriginal advisory details:\nIt was discovered that Perl\u0027s Archive::Tar module incorrectly handled\nsymlink and hardlink targets during extraction. An attacker could use this\nissue to read or overwrite arbitrary files outside the extraction\ndirectory. (CVE-2026-42496)\nIt was discovered that Perl had a heap buffer overflow when compiling\nregular expressions with a repeated fixed string on 32-bit builds. An\nattacker could use this issue to cause a denial of service or possibly\nexecute arbitrary code. (CVE-2026-8376)",
  "id": "USN-8467-2",
  "modified": "2026-07-02T06:15:19Z",
  "published": "2026-07-02T06:15:19Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8467-2"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-8376"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-42496"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "perl vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2026-8376",
    "UBUNTU-CVE-2026-42496"
  ]
}



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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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