CVE-2017-5426

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 52 Thunderbird versions prior to 52

Description The issue occurs on Linux when the seccomp-bpf filter is running and the Gecko Media Plugin sandbox is started, causing the sandbox to fail and leaving items with only the filter's protection, which is typically weaker than the sandbox. This issue is specific to Linux and does not affect other operating systems.

Recommendations For Firefox versions prior to 52, update to version 52 or later to resolve the issue. For Thunderbird versions prior to 52, update to version 52 or later to resolve the issue.