RLSA-2026:20586

Synopsis

Important: thunderbird security update

Description

Mozilla Thunderbird is a standalone mail and newsgroup client.

Security Fix(es):

* firefox: thunderbird: Memory safety bugs fixed in Firefox ESR 140.10.1 and Firefox 150.0.1 (CVE-2026-7323)

* firefox: thunderbird: Information disclosure due to incorrect boundary conditions in the Audio/Video component (CVE-2026-7320)

* firefox: thunderbird: Memory safety bugs fixed in Thunderbird ESR 140.10.1 and Thunderbird 150.0.1 (CVE-2026-7322)

* firefox: thunderbird: webrtc: Sandbox escape due to incorrect boundary conditions in the WebRTC: Networking component (CVE-2026-7321)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Affected products

Rocky Linux 8 aarch64 Rocky Linux 8 x86_64

Fixes

2463481 2463483 2463484 2463485

CVEs

CVE-2026-7320 CVE-2026-7321 CVE-2026-7322 CVE-2026-7323

Affected packages

Rocky Linux 8 aarch64 - AppStream

thunderbird-0:140.10.1-1.el8_10.aarch64.rpm thunderbird-0:140.10.1-1.el8_10.src.rpm thunderbird-debuginfo-0:140.10.1-1.el8_10.aarch64.rpm thunderbird-debugsource-0:140.10.1-1.el8_10.aarch64.rpm

Rocky Linux 8 x86_64 - AppStream

thunderbird-0:140.10.1-1.el8_10.src.rpm thunderbird-0:140.10.1-1.el8_10.x86_64.rpm thunderbird-debuginfo-0:140.10.1-1.el8_10.x86_64.rpm thunderbird-debugsource-0:140.10.1-1.el8_10.x86_64.rpm