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python3.9: Fix of CVE-2026-9669

Type: advisorySources: OSV

- CVE-2026-9669: latch the libbz2 error in BZ2Decompressor and raise ValueError from any further decompress(), so a decompressor that has already failed can no longer be reused

Products
python-unversioned-command, python3, python3-debug, python3-devel, python3-idle, python3-libs, python3-test, python3-tkinter
Affected versions
Not specified
Fixed versions
3.9.16-1.el9_2.2.tuxcare.els36
CVEs
CVE-2026-9669
Confirmed fixed CVEs
Not specified
Updated in this feed
1 Nov 2026, 10:45 UTC · Revision 1

Source evidence

python3.9: Fix of CVE-2026-9669

core-osv · Original source

Published 18 Sept 2026, 16:00 UTC

- CVE-2026-9669: latch the libbz2 error in BZ2Decompressor and raise ValueError from any further decompress(), so a decompressor that has already failed can no longer be reused

osv:CLSA-2026-1789747235

python-unversioned-command

Fixed versions: 3.9.16-1.el9_2.2.tuxcare.els36

python3

Fixed versions: 3.9.16-1.el9_2.2.tuxcare.els36

python3-debug

Fixed versions: 3.9.16-1.el9_2.2.tuxcare.els36

python3-devel

Fixed versions: 3.9.16-1.el9_2.2.tuxcare.els36

python3-idle

Fixed versions: 3.9.16-1.el9_2.2.tuxcare.els36

python3-libs

Fixed versions: 3.9.16-1.el9_2.2.tuxcare.els36

python3-test

Fixed versions: 3.9.16-1.el9_2.2.tuxcare.els36

python3-tkinter

Fixed versions: 3.9.16-1.el9_2.2.tuxcare.els36

Complete source record
{
  "id": "9c02b81d5e3832b1b925322822724c6ddc4312fc78e2a278eb36088f328e1acb",
  "url": "https://osv.dev/vulnerability/CLSA-2026-1789747235",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "python3.9: Fix of CVE-2026-9669",
    "summary": "- CVE-2026-9669: latch the libbz2 error in BZ2Decompressor and raise ValueError from any further decompress(), so a decompressor that has already failed can no longer be reused",
    "evidence": "osv:CLSA-2026-1789747235",
    "products": [
      {
        "name": {
          "value": "python-unversioned-command",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "3.9.16-1.el9_2.2.tuxcare.els36",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "python3",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "3.9.16-1.el9_2.2.tuxcare.els36",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "python3-debug",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "3.9.16-1.el9_2.2.tuxcare.els36",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "python3-devel",
          "evidence": "/affected/3/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "3.9.16-1.el9_2.2.tuxcare.els36",
            "evidence": "/affected/3/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "python3-idle",
          "evidence": "/affected/4/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "3.9.16-1.el9_2.2.tuxcare.els36",
            "evidence": "/affected/4/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "python3-libs",
          "evidence": "/affected/5/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "3.9.16-1.el9_2.2.tuxcare.els36",
            "evidence": "/affected/5/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "python3-test",
          "evidence": "/affected/6/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "3.9.16-1.el9_2.2.tuxcare.els36",
            "evidence": "/affected/6/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "python3-tkinter",
          "evidence": "/affected/7/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "3.9.16-1.el9_2.2.tuxcare.els36",
            "evidence": "/affected/7/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CLSA-2026-1789747235",
      "aliases": [
        "CLSA-2026-1789747235"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "3.9.16-1.el9_2.2.tuxcare.els36"
                }
              ]
            }
          ],
          "package": {
            "name": "python-unversioned-command",
            "purl": "pkg:rpm/tuxcare/python-unversioned-command?distro=almalinux-9.2",
            "ecosystem": "TuxCare:AlmaLinux:9.2"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1789747235.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "3.9.16-1.el9_2.2.tuxcare.els36"
                }
              ]
            }
          ],
          "package": {
            "name": "python3",
            "purl": "pkg:rpm/tuxcare/python3?distro=almalinux-9.2",
            "ecosystem": "TuxCare:AlmaLinux:9.2"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1789747235.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "3.9.16-1.el9_2.2.tuxcare.els36"
                }
              ]
            }
          ],
          "package": {
            "name": "python3-debug",
            "purl": "pkg:rpm/tuxcare/python3-debug?distro=almalinux-9.2",
            "ecosystem": "TuxCare:AlmaLinux:9.2"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1789747235.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "3.9.16-1.el9_2.2.tuxcare.els36"
                }
              ]
            }
          ],
          "package": {
            "name": "python3-devel",
            "purl": "pkg:rpm/tuxcare/python3-devel?distro=almalinux-9.2",
            "ecosystem": "TuxCare:AlmaLinux:9.2"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1789747235.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "3.9.16-1.el9_2.2.tuxcare.els36"
                }
              ]
            }
          ],
          "package": {
            "name": "python3-idle",
            "purl": "pkg:rpm/tuxcare/python3-idle?distro=almalinux-9.2",
            "ecosystem": "TuxCare:AlmaLinux:9.2"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1789747235.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "3.9.16-1.el9_2.2.tuxcare.els36"
                }
              ]
            }
          ],
          "package": {
            "name": "python3-libs",
            "purl": "pkg:rpm/tuxcare/python3-libs?distro=almalinux-9.2",
            "ecosystem": "TuxCare:AlmaLinux:9.2"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1789747235.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "3.9.16-1.el9_2.2.tuxcare.els36"
                }
              ]
            }
          ],
          "package": {
            "name": "python3-test",
            "purl": "pkg:rpm/tuxcare/python3-test?distro=almalinux-9.2",
            "ecosystem": "TuxCare:AlmaLinux:9.2"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1789747235.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "3.9.16-1.el9_2.2.tuxcare.els36"
                }
              ]
            }
          ],
          "package": {
            "name": "python3-tkinter",
            "purl": "pkg:rpm/tuxcare/python3-tkinter?distro=almalinux-9.2",
            "ecosystem": "TuxCare:AlmaLinux:9.2"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1789747235.json"
          }
        }
      ],
      "modified": "2026-10-26T09:30:47.622845016Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-9669"
      ],
      "references": [
        "https://errata.tuxcare.com/els_os/almalinux9.2esu/CLSA-2026-1789747235.html",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-9669"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-9669",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 447250,
  "published_at": "2026-09-18T16:00:47+00:00"
}