{
  "schema_version": "1.7.0",
  "id": "MGASA-2026-0380",
  "published": "2026-09-07T18:46:11Z",
  "modified": "2026-09-07T17:42:00Z",
  "summary": "Updated python-pyasn1 packages fix security vulnerabilities",
  "details": "The BER decoder (shared by the CER and DER codecs) parses long-form tags\nby accumulating continuation octets in a loop with no upper bound on the\nsize of the tag ID. A crafted input can force the decoder to build an\narbitrarily large integer, with CPU cost growing quadratically in input\nsize — a ~1 MB input consumes over a minute of CPU. On Python 3.11+, the\noversized tag ID can also trigger an unhandled ValueError (integer\nstring conversion limit) while the decoder formats error messages,\nviolating the documented PyAsn1Error contract and potentially bypassing\ncaller error handling.\n",
  "upstream": [
    "CVE-2026-59884",
    "CVE-2026-59885",
    "CVE-2026-59886"
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://advisories.mageia.org/MGASA-2026-0380.html"
    },
    {
      "type": "REPORT",
      "url": "https://bugs.mageia.org/show_bug.cgi?id=36249"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8712-1"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/pyasn1/pyasn1/security/advisories/GHSA-m4p7-r5rc-7g4j"
    }
  ],
  "affected": [
    {
      "package": {
        "ecosystem": "Mageia:10",
        "name": "python-pyasn1",
        "purl": "pkg:rpm/mageia/python-pyasn1?arch=source&distro=mageia-10"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.6.4-1.mga10"
            }
          ]
        }
      ],
      "ecosystem_specific": {
        "section": "core"
      }
    }
  ],
  "credits": [
    {
      "name": "Mageia",
      "type": "COORDINATOR",
      "contact": [
        "https://wiki.mageia.org/en/Packages_Security_Team"
      ]
    }
  ]
}