Security update for MozillaFirefox

Announcement ID: SUSE-SU-2026:21157-1
Release Date: 2026-04-09T12:58:07Z
Rating: important
References:
Cross-References:
CVSS scores:
  • CVE-2026-5731 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
  • CVE-2026-5731 ( NVD ): 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  • CVE-2026-5732 ( SUSE ): 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  • CVE-2026-5732 ( NVD ): 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  • CVE-2026-5734 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
  • CVE-2026-5734 ( NVD ): 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  • CVE-2026-5734 ( NVD ): 8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Products:
  • SUSE Linux Enterprise Server 16.0
  • SUSE Linux Enterprise Server for SAP applications 16.0

An update that solves three vulnerabilities and contains one feature can now be installed.

Description:

This update for MozillaFirefox fixes the following issues:

Update to Firefox Extended Support Release 140.9.1 ESR (bsc#1261663).

  • MFSA 2026-27:
  • CVE-2026-5731: memory safety bugs fixed in Firefox ESR 115.34.1, Firefox ESR 140.9.1, Thunderbird ESR 140.9.1, Firefox 149.0.2 and Thunderbird 149.0.2.
  • CVE-2026-5732: incorrect boundary conditions, integer overflow in the Graphics: Text component.
  • CVE-2026-5734: memory safety bugs fixed in Firefox ESR 140.9.1, Thunderbird ESR 140.9.1, Firefox 149.0.2 and Thunderbird 149.0.2.

Patch Instructions:

To install this SUSE update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Alternatively you can run the command listed for your product:

  • SUSE Linux Enterprise Server 16.0
    zypper in -t patch SUSE-SLES-16.0-501=1
  • SUSE Linux Enterprise Server for SAP applications 16.0
    zypper in -t patch SUSE-SLES-16.0-501=1

Package List:

  • SUSE Linux Enterprise Server 16.0 (aarch64 ppc64le s390x x86_64)
    • MozillaFirefox-translations-common-140.9.1-160000.1.1
    • MozillaFirefox-translations-other-140.9.1-160000.1.1
    • MozillaFirefox-debuginfo-140.9.1-160000.1.1
    • MozillaFirefox-140.9.1-160000.1.1
    • MozillaFirefox-debugsource-140.9.1-160000.1.1
  • SUSE Linux Enterprise Server 16.0 (noarch)
    • MozillaFirefox-devel-140.9.1-160000.1.1
  • SUSE Linux Enterprise Server for SAP applications 16.0 (ppc64le x86_64)
    • MozillaFirefox-translations-common-140.9.1-160000.1.1
    • MozillaFirefox-translations-other-140.9.1-160000.1.1
    • MozillaFirefox-debuginfo-140.9.1-160000.1.1
    • MozillaFirefox-140.9.1-160000.1.1
    • MozillaFirefox-debugsource-140.9.1-160000.1.1
  • SUSE Linux Enterprise Server for SAP applications 16.0 (noarch)
    • MozillaFirefox-devel-140.9.1-160000.1.1

References: