Stay Secure with the Latest Linux Advisories

security advisorySuSEimportant

SUSE 15 SP7 MozillaThunderbird Important Memory Safety Patch 2026-1379-1

An update that solves three vulnerabilities can now be installed.. # Security update for MozillaThunderbird Announcement ID: SUSE-SU-2026:1379-1 Release Date: 2026-04-16T08:42:00Z Rating: important References: * bsc#1261663 Cross-References: * CVE-2026-5731 * CVE-2026-5732 * CVE-2026-5734 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 Desktop 15 SP7 * SUSE Linux Enterprise Real Time 15 SP7 * SUSE Linux Enterprise Server 15 SP7 * SUSE Linux Enterprise Server for SAP Applications 15 SP7 * SUSE Linux Enterprise Workstation Extension 15 SP7 * SUSE Package Hub 15 15-SP7 An update that solves three vulnerabilities can now be installed. ## Description: This update for MozillaThunderbird fixes the following issues: * Update to 149.0.2 and 140.9.1esr (bsc#1261663). * 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 Workstation Extension 15 SP7 zypper in -t patch SUSE-SLE-Product-WE-15-SP7-2026-1379=1 * SUSE Package Hub 15 15-SP7 zypper in -t patch SUSE-SLE-Module-Packagehub-Subpackages-15-SP7-2026-1379=1 ## Package List: * SUSE Linux Enterprise Workstation Extension 15 SP7 (x86_64) * MozillaThunderbird-translations-common-140.9.1-150200.8.266.1 * MozillaThunderbird-translations-other-140.9.1-150200.8.266.1 * MozillaThunderbird-debuginfo-140.9.1-150200.8.266.1 * MozillaThunderbird-140.9.1-150200.8.266.1 * MozillaThunderbird-debugsource-140.9.1-150200.8.266.1 * SUSE Package Hub 15 15-SP7 (aarch64 ppc64le s390x) * MozillaThunderbird-translations-common-140.9.1-150200.8.266.1 * MozillaThunderbird-translations-other-140.9.1-150200.8.266.1 * MozillaThunderbird-debuginfo-140.9.1-150200.8.266.1 * MozillaThunderbird-140.9.1-150200.8.266.1 * MozillaThunderbird-debugsource-140.9.1-150200.8.266.1 ## References: * https://www.suse.com/security/cve/CVE-2026-5731.html * https://www.suse.com/security/cve/CVE-2026-5732.html * https://www.suse.com/security/cve/CVE-2026-5734.html * https://bugzilla.suse.com/show_bug.cgi?id=1261663 . MozillaThunderbird update resolves critical issues, enhancing software safety and addressing multiple memory flaws.. MozillaThunderbird update, SUSE security patch, memory safety flaws, software vulnerabilities, important security fix. . Severity: Important. LinuxSecurity.com Team

Apr 16, 2026 •Important SuSE