{
  "cveId": "CVE-2026-12844",
  "url": "https://patchblox.com/security/cve/CVE-2026-12844",
  "summary": "CVE-2026-12844 is fixed in 4 products on 1 platform, first by DEBIAN-CVE-2026-12844, released June 26, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "liblist-someutils-xs-perl: List::SomeUtils::XS versions before 0.59 for Perl have a heap buffer overflow in the pairwise function",
  "description": "List::SomeUtils::XS versions before 0.59 for Perl have a heap buffer overflow in the pairwise function.  pairwise() collects the values returned by the block into a heap buffer sized to the longer input array, then grows the buffer before each copy with a single quadrupling (alloc \u003C\u003C= 2) instead of a loop. A block call that returns more than four times the current allocation in one invocation outgrows that one quadrupling, and the copy writes past the end of the buffer.  Any caller of pairwise() whose block returns, for a single pair, more than four times the longer input array\u0027s length writes past the buffer and corrupts the heap.",
  "published": "2026-06-25T16:16:33Z",
  "severity": "high",
  "cvss": 7.5,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00659,
  "epssPercentile": 0.51771,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "liblist-someutils-xs-perl",
      "release": "Debian 14",
      "fixedVersion": "0.59-1",
      "fix": "DEBIAN-CVE-2026-12844",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-12844",
      "released": "2026-06-26T17:32:29Z"
    },
    {
      "platform": "linux",
      "product": "perl-List-SomeUtils-XS",
      "release": "Fedora 43",
      "fixedVersion": "0.59-1.fc43",
      "fix": "FEDORA-2026-6217093B91",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-6217093b91",
      "released": "2026-08-10T11:13:28Z"
    },
    {
      "platform": "linux",
      "product": "perl-List-SomeUtils-XS",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "0.58-160000.3.2",
      "fix": "OPENSUSE-SU-2026:21218-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-21218-1",
      "released": "2026-07-06T20:10:17Z"
    },
    {
      "platform": "linux",
      "product": "perl-List-SomeUtils-XS",
      "release": "sles 15.6",
      "fixedVersion": "0.56-150000.3.3.1",
      "fix": "SUSE-SU-2026:2845-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-2845-1",
      "released": "2026-07-10T10:30:59Z"
    },
    {
      "platform": "linux",
      "product": "perl-List-SomeUtils-XS",
      "release": "sles 15.7",
      "fixedVersion": "0.56-150000.3.3.1",
      "fix": "SUSE-SU-2026:2845-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-2845-1",
      "released": "2026-07-10T10:30:59Z"
    },
    {
      "platform": "linux",
      "product": "perl-List-SomeUtils-XS",
      "release": "sles 16.0",
      "fixedVersion": "0.58-160000.3.2",
      "fix": "SUSE-SU-2026:22559-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-22559-1",
      "released": "2026-07-06T20:10:18Z"
    },
    {
      "platform": "linux",
      "product": "perl-List-SomeUtils-XS-debuginfo",
      "release": "Fedora 43",
      "fixedVersion": "0.59-1.fc43",
      "fix": "FEDORA-2026-6217093B91",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-6217093b91",
      "released": "2026-08-10T11:13:28Z"
    },
    {
      "platform": "linux",
      "product": "perl-List-SomeUtils-XS-debugsource",
      "release": "Fedora 43",
      "fixedVersion": "0.59-1.fc43",
      "fix": "FEDORA-2026-6217093B91",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-6217093b91",
      "released": "2026-08-10T11:13:28Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}