Markthecodehamster

**Name of the Vulnerable Software and Affected Versions** fscrypt versions prior to 0.2.4 **Description** The issue concerns the pam fscrypt module in fscrypt, which may incorrectly restore primary and supplementary group IDs to the values associated with the root user. This allows attackers to gain privileges via a successful login through certain applications that use Linux-PAM. Specifically, after dropping and then elevating process privileges, the euid, guid, and groups are not properly restored to their original values, allowing an unprivileged user to gain membership in the root group. **Recommendations** For versions prior to 0.2.4, update to version 0.2.4 or later to resolve the issue. As a temporary workaround, consider restricting the use of the pam fscrypt module until a patch is available. Avoid using applications that rely on Linux-PAM for authentication until the issue is resolved.