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firefox: thunderbird: JIT miscompilation in the JavaScript Engine: JIT component

🗓️ 05 Jan 2026 01:38:55Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 6 Views

Just in time compiler miscompilation in the JavaScript engine affects Firefox before 146 and ESR before 140.6, and Thunderbird before 146, ESR before 140.6 on Unix.

Related
Packages
Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux9.2aarch64thunderbird140.6.0-1.el9_2thunderbird-140.6.0-1.el9_2.aarch64.rpm
Red Hat Enterprise Linux9.2ppc64lethunderbird140.6.0-1.el9_2thunderbird-140.6.0-1.el9_2.ppc64le.rpm
Red Hat Enterprise Linux9.2s390xthunderbird140.6.0-1.el9_2thunderbird-140.6.0-1.el9_2.s390x.rpm
Red Hat Enterprise Linux9.2x86_64thunderbird140.6.0-1.el9_2thunderbird-140.6.0-1.el9_2.x86_64.rpm
Red Hat Enterprise Linux9.2aarch64thunderbird-debuginfo140.6.0-1.el9_2thunderbird-debuginfo-140.6.0-1.el9_2.aarch64.rpm
Red Hat Enterprise Linux9.2ppc64lethunderbird-debuginfo140.6.0-1.el9_2thunderbird-debuginfo-140.6.0-1.el9_2.ppc64le.rpm
Red Hat Enterprise Linux9.2s390xthunderbird-debuginfo140.6.0-1.el9_2thunderbird-debuginfo-140.6.0-1.el9_2.s390x.rpm
Red Hat Enterprise Linux9.2x86_64thunderbird-debuginfo140.6.0-1.el9_2thunderbird-debuginfo-140.6.0-1.el9_2.x86_64.rpm
Red Hat Enterprise Linux9.2aarch64thunderbird-debugsource140.6.0-1.el9_2thunderbird-debugsource-140.6.0-1.el9_2.aarch64.rpm
Red Hat Enterprise Linux9.2ppc64lethunderbird-debugsource140.6.0-1.el9_2thunderbird-debugsource-140.6.0-1.el9_2.ppc64le.rpm
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30 Jun 2026 02:08Current
5.7Medium risk
Vulners AI Score5.7
CVSS 3.19.8
EPSS0.00495
SSVC
6