openSUSE Leap 15.6 MozillaThunderbird Important Update 2026-0880

This update for MozillaThunderbird fixes the following issues: Mozilla Thunderbird 140.8 MFSA 2026-17 (bsc#1258568): * CVE-2026-2757: Incorrect boundary conditions in the WebRTC: Audio/Video component * CVE-2026-2758: Use-after-free in the JavaScript: GC component * CVE-2026-2759: Incorrect boundary conditions in the Graphics: ImageLib component * CVE-2026-2760: Sandbox escape due to incorrect boundary conditions in the Graphics: WebRender component * CVE-2026-2761: Sandbox escape in the Graphics: WebRender component * CVE-2026-2762: Integer overflow in the JavaScript: Standard Library component * CVE-2026-2763: Use-after-free in the JavaScript Engine component * CVE-2026-2764: JIT miscompilation, use-after-free in the JavaScript Engine: JIT component * CVE-2026-2765: Use-after-free in the JavaScript Engine component * CVE-2026-2766: Use-after-free in the JavaScript Engine: JIT component * CVE-2026-2767: Use-after-free in the JavaScript:

## 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-SP7-2026-880=1 * openSUSE Leap 15.6 zypper in -t patch openSUSE-SLE-15.6-2026-880=1 * SUSE Package Hub 15 15-SP7 zypper in -t patch SUSE-SLE-Module-Packagehub-Subpackages-15-SP7-2026-880=1

## 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-SP7-2026-880=1

zypper in -t patch openSUSE-SLE-15.6-2026-880=1

* SUSE Package Hub 15 15-SP7

zypper in -t patch SUSE-SLE-Module-Packagehub-Subpackages-15-SP7-2026-880=1

* SUSE Linux Enterprise Workstation Extension 15 SP7 (x86_64) * MozillaThunderbird-debugsource-140.8.0-150200.8.260.1 * MozillaThunderbird-translations-other-140.8.0-150200.8.260.1 * MozillaThunderbird-debuginfo-140.8.0-150200.8.260.1 * MozillaThunderbird-translations-common-140.8.0-150200.8.260.1 * MozillaThunderbird-140.8.0-150200.8.260.1 * openSUSE Leap 15.6 (aarch64 ppc64le s390x x86_64) * MozillaThunderbird-debugsource-140.8.0-150200.8.260.1 * MozillaThunderbird-translations-other-140.8.0-150200.8.260.1 * MozillaThunderbird-debuginfo-140.8.0-150200.8.260.1 * MozillaThunderbird-translations-common-140.8.0-150200.8.260.1 * MozillaThunderbird-140.8.0-150200.8.260.1 * SUSE Package Hub 15 15-SP7 (aarch64 ppc64le s390x) * MozillaThunderbird-debugsource-140.8.0-150200.8.260.1 * MozillaThunderbird-translations-other-140.8.0-150200.8.260.1 * MozillaThunderbird-debuginfo-140.8.0-150200.8.260.1 * Read the Full Advisory

* SUSE Linux Enterprise Workstation Extension 15 SP7 (x86_64)

* MozillaThunderbird-debugsource-140.8.0-150200.8.260.1

* MozillaThunderbird-translations-other-140.8.0-150200.8.260.1

* MozillaThunderbird-debuginfo-140.8.0-150200.8.260.1

* MozillaThunderbird-translations-common-140.8.0-150200.8.260.1

* MozillaThunderbird-140.8.0-150200.8.260.1

* openSUSE Leap 15.6 (aarch64 ppc64le s390x x86_64)

* MozillaThunderbird-debugsource-140.8.0-150200.8.260.1

* MozillaThunderbird-translations-other-140.8.0-150200.8.260.1

* MozillaThunderbird-debuginfo-140.8.0-150200.8.260.1

* MozillaThunderbird-translations-common-140.8.0-150200.8.260.1

* MozillaThunderbird-140.8.0-150200.8.260.1

* SUSE Package Hub 15 15-SP7 (aarch64 ppc64le s390x)

* MozillaThunderbird-debugsource-140.8.0-150200.8.260.1

* MozillaThunderbird-translations-other-140.8.0-150200.8.260.1

* MozillaThunderbird-debuginfo-140.8.0-150200.8.260.1

* bsc#1258568 ## References: * * * * * * * * * * * * * * * * * * Read the Full Advisory

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