CVE-2026-41054Missing exit out of permission check in haveged could lead to root exploit

Official description

In `src/havegecmd.c`, the `socket_handler` function performs a credential check on the abstract UNIX socket (`\0/sys/entropy/haveged`). However, while it detects if the connecting user is not root (`cred.uid != 0`) and prepares a negative acknowledgement (`ASCII_NAK`), it **fails to stop execution**. The code proceeds to the `switch` statement, allowing any local unprivileged user to execute privileged commands such as `MAGIC_CHROOT`.

Affected packages & fixed versions

Affected products (as reported)

References

• https://bugzilla.suse.com/show_bug.cgi?id=CVE-2026-41054
• http://www.openwall.com/lists/oss-security/2026/05/19/3
• http://www.openwall.com/lists/oss-security/2026/05/19/4
• http://www.openwall.com/lists/oss-security/2026/05/19/5
• http://www.openwall.com/lists/oss-security/2026/05/20/1
• http://www.openwall.com/lists/oss-security/2026/05/21/17
• http://www.openwall.com/lists/oss-security/2026/05/22/1
• https://lists.debian.org/debian-lts-announce/2026/06/msg00005.html