Opera 7.54 and earlier on Gentoo Linux uses an insecure path for plugins, which could allow local users to gain privileges by inserting malicious libraries into the PORTAGE_TMPDIR (portage) temporary directory.
From 神龙GPT (AIGC)
Opera 7.54 和更早版本的 Gentoo Linux 使用一个不安全的路径来加载插件，这可能导致本地用户通过插入恶意库来获得权限，从而隐藏他们的真实身份。