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qt5-qtbase security update

Type: advisorySource: OSV1 source record

Qt is a software toolkit for developing applications. Security Fix(es): An out-of-bounds read (buffer over-read) vulnerability exists in QTextCodec::codecForName() in Qt. When the function is called with a QByteArray that is not NUL-terminated (for example, one created with QByteArray::fromRawData()), the codec-name matching routine reads past the end of the supplied buffer. In most cases this results in an incorrect text codec being selected; in the worst case, if the over-read reaches unmapped memory, the process crashes (denial of service). The over-read is bounded by the length of the longest codec-name candidate, and the out-of-bounds bytes are only compared internally against Qt's fixed list of codec names, so no data is disclosed to an attacker. Applications that do not pass non-NUL-terminated QByteArrays to QTextCodec::codecForName() are not exposed. The affected code resides in the Qt5Compat module from Qt 6.0.0 onward, and in Qt Core (qtbase) in Qt 4.x and Qt 5.x.(CVE-2026-9499)

Announced Source revision 1
Original source ↗

OESA-2026-4062

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: osv:OESA-2026-4062

qt5-qtbase

Source reference: /affected/0/package/name

Affected versions
Not stated in this record
Fixed versions
5.15.10-17.oe2403sp4

Source reference: /affected/0/ranges

Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "5.15.10-17.oe2403sp4"
          }
        ]
      }
    ],
    "package": {
      "name": "qt5-qtbase",
      "purl": "pkg:rpm/openEuler/qt5-qtbase&distro=openEuler-24.03-LTS-SP4",
      "ecosystem": "openEuler:24.03-LTS-SP4"
    },
    "database_specific": {
      "source": "https://repo.openeuler.org/security/data/osv/OESA-2026-4062.json"
    },
    "ecosystem_specific": {
      "src": [
        "qt5-qtbase-5.15.10-17.oe2403sp4.src.rpm"
      ],
      "noarch": [
        "qt5-qtbase-common-5.15.10-17.oe2403sp4.noarch.rpm"
      ],
      "x86_64": [
        "qt5-qtbase-5.15.10-17.oe2403sp4.x86_64.rpm",
        "qt5-qtbase-debuginfo-5.15.10-17.oe2403sp4.x86_64.rpm",
        "qt5-qtbase-debugsource-5.15.10-17.oe2403sp4.x86_64.rpm",
        "qt5-qtbase-devel-5.15.10-17.oe2403sp4.x86_64.rpm",
        "qt5-qtbase-examples-5.15.10-17.oe2403sp4.x86_64.rpm",
        "qt5-qtbase-gui-5.15.10-17.oe2403sp4.x86_64.rpm",
        "qt5-qtbase-mysql-5.15.10-17.oe2403sp4.x86_64.rpm",
        "qt5-qtbase-odbc-5.15.10-17.oe2403sp4.x86_64.rpm",
        "qt5-qtbase-postgresql-5.15.10-17.oe2403sp4.x86_64.rpm",
        "qt5-qtbase-private-devel-5.15.10-17.oe2403sp4.x86_64.rpm",
        "qt5-qtbase-static-5.15.10-17.oe2403sp4.x86_64.rpm"
      ],
      "aarch64": [
        "qt5-qtbase-5.15.10-17.oe2403sp4.aarch64.rpm",
        "qt5-qtbase-debuginfo-5.15.10-17.oe2403sp4.aarch64.rpm",
        "qt5-qtbase-debugsource-5.15.10-17.oe2403sp4.aarch64.rpm",
        "qt5-qtbase-devel-5.15.10-17.oe2403sp4.aarch64.rpm",
        "qt5-qtbase-examples-5.15.10-17.oe2403sp4.aarch64.rpm",
        "qt5-qtbase-gui-5.15.10-17.oe2403sp4.aarch64.rpm",
        "qt5-qtbase-mysql-5.15.10-17.oe2403sp4.aarch64.rpm",
        "qt5-qtbase-odbc-5.15.10-17.oe2403sp4.aarch64.rpm",
        "qt5-qtbase-postgresql-5.15.10-17.oe2403sp4.aarch64.rpm",
        "qt5-qtbase-private-devel-5.15.10-17.oe2403sp4.aarch64.rpm",
        "qt5-qtbase-static-5.15.10-17.oe2403sp4.aarch64.rpm"
      ]
    }
  }
]

Publisher severity

medium

Source reference: /database_specific/severity

Event
#14730 · Revision 1
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Publisher date
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