Ubuntu alert USN-8076-1 (qtbase-opensource-src)

From:
             
 
noreply+usn-bot@canonical.com
To:
             
 
ubuntu-security-announce@lists.ubuntu.com
Subject:
             
 
[USN-8076-1] Qt vulnerabilities
Date:
             
 
Thu, 05 Mar 2026 23:50:23 +0000
Message-ID:
             
 
<E1vyISV-0001Zo-Bj@lists.ubuntu.com>
==========================================================================
Ubuntu Security Notice USN-8076-1
March 05, 2026

qtbase-opensource-src vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

Several security issues were fixed in Qt.

Software Description:
- qtbase-opensource-src: Qt 5 libraries

Details:

It was discovered that Qt did not correctly handle OpenSSL's error queue.
An attacker could possibly use this issue to cause a denial of service.
This issue was only addressed in Ubuntu 20.04 LTS. (CVE-2020-13962)

It was discovered that Qt incorrectly handled certain XBM image files. If a
user or automated system were tricked into opening a specially crafted PPM
file, a remote attacker could cause Qt to crash, resulting in a denial of
service. This issue was only addressed in Ubuntu 16.04 LTS and
Ubuntu 20.04 LTS. (CVE-2020-17507)

It was discovered that Qt did not correctly handle executing specific
binaries. If a user or automated system were tricked into executing a
binary at a specific file path, an attacker could cause a denial of
service or execute arbitrary code. This issue was only addressed in
Ubuntu 20.04 LTS. (CVE-2022-25255)

It was discovered that Qt did not correctly handle certain integer
arithmetic. An attacker could possibly use this issue to cause a denial
of service. This issue was only addressed in Ubuntu 18.04 LTS,
Ubuntu 20.04 LTS and Ubuntu 22.04 LTS. (CVE-2023-51714)

It was discovered that Qt did not correctly handle certain encrypted
connections. An attacker could possibly use this issue to leak sensitive
information. This issue was only addressed in Ubuntu 24.04 LTS.
(CVE-2024-39936)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 24.04 LTS
  libqt5core5t64                  5.15.13+dfsg-1ubuntu1+esm1
                                  Available with Ubuntu Pro
  libqt5gui5t64                   5.15.13+dfsg-1ubuntu1+esm1
                                  Available with Ubuntu Pro

Ubuntu 22.04 LTS
  libqt5core5a                    5.15.3+dfsg-2ubuntu0.2+esm3
                                  Available with Ubuntu Pro
  libqt5gui5                      5.15.3+dfsg-2ubuntu0.2+esm3
                                  Available with Ubuntu Pro

Ubuntu 20.04 LTS
  libqt5core5a                    5.12.8+dfsg-0ubuntu2.1+esm3
                                  Available with Ubuntu Pro
  libqt5gui5                      5.12.8+dfsg-0ubuntu2.1+esm3
                                  Available with Ubuntu Pro

Ubuntu 18.04 LTS
  libqt5core5a                    5.9.5+dfsg-0ubuntu2.6+esm2
                                  Available with Ubuntu Pro
  libqt5gui5                      5.9.5+dfsg-0ubuntu2.6+esm2
                                  Available with Ubuntu Pro

Ubuntu 16.04 LTS
  libqt5core5a                    5.5.1+dfsg-16ubuntu7.7+esm2
                                  Available with Ubuntu Pro
  libqt5gui5                      5.5.1+dfsg-16ubuntu7.7+esm2
                                  Available with Ubuntu Pro

In general, a standard system update will make all the necessary changes.

References:
  https://ubuntu.com/security/notices/USN-8076-1
  CVE-2020-13962, CVE-2020-17507, CVE-2022-25255, CVE-2023-51714,
  CVE-2024-39936


Attachment: signature.asc (type=application/pgp-signature)
-----BEGIN PGP SIGNATURE-----
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=cnJK
-----END PGP SIGNATURE-----