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CVE-2026-9669 bz2.BZ2Decompressor reuse after error can cause a stack buffer overflow

🗓️ 08 Jun 2026 22:01:15Reported by PSFType 
cvelist
 cvelist
🔗 www.cve.org👁 73 Views

BZ2Decompressor reuse after OSError may cause stack buffer overflow on retry with crafted input.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-9669
8 Jun 202622:01
attackerkb
Tenable Nessus
Amazon Linux 2023 : python3.13, python3.13-devel, python3.13-freethreading (ALAS2023-2026-1910)
16 Jul 202600:00
nessus
Tenable Nessus
Ubuntu 22.04 LTS / 24.04 LTS / 26.04 LTS : Python vulnerabilities (USN-8509-1)
7 Jul 202600:00
nessus
Tenable Nessus
Linux Distros Unpatched Vulnerability : CVE-2026-9669
9 Jun 202600:00
nessus
Amazon
Important: python3.13
7 Jul 202600:00
amazon
Amazon
Important: python3.14
7 Jul 202600:00
amazon
Amazon
Important: python3.11
20 Jul 202600:00
amazon
Amazon
Important: python3.12
20 Jul 202600:00
amazon
Amazon
Important: python3.9
20 Jul 202600:00
amazon
Chainguard
CVE-2026-9669 vulnerabilities
23 Jun 202608:17
cgr
Rows per page
[
  {
    "defaultStatus": "unaffected",
    "modules": [
      "bz2"
    ],
    "product": "CPython",
    "repo": "https://github.com/python/cpython",
    "vendor": "Python Software Foundation",
    "versions": [
      {
        "version": "0",
        "lessThan": "3.13.14",
        "status": "affected",
        "versionType": "python"
      },
      {
        "version": "3.14.0",
        "lessThan": "3.14.6",
        "status": "affected",
        "versionType": "python"
      },
      {
        "version": "3.15.0a1",
        "lessThan": "3.15.0b3",
        "status": "affected",
        "versionType": "python"
      }
    ]
  }
]

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