CVE-2026-41054
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`.
脆弱性の種類
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`.
参考情報
- 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