CVE-2026-5398 Kernel use-after-free bug in the TIOCNOTTY handler

The implementation of TIOCNOTTY failed to clear a back-pointer from the structure representing the controlling terminal to the calling process' session. If the invoking process then exits, the terminal structure may end up containing a pointer to freed memory. A malicious process can abuse the...

CVE-2026-5398

The FreeBSD kernel contains a use-after-free vulnerability in the TIOCNOTTY ioctl handler. The issue arises because the implementation fails to clear a back-pointer from the controlling terminal structure to the calling process's session. When an invoking process exits, the terminal structure ret...

CVE-2026-5398 Kernel use-after-free bug in the TIOCNOTTY handler

The implementation of TIOCNOTTY failed to clear a back-pointer from the structure representing the controlling terminal to the calling process' session. If the invoking process then exits, the terminal structure may end up containing a pointer to freed memory. A malicious process can abuse the...

FreeBSD : FreeBSD -- Kernel use-after-free bug in the TIOCNOTTY handler (971b5528-3def-11f1-bb07-bc241121aa0a)

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the 971b5528-3def-11f1-bb07-bc241121aa0a advisory. The implementation of TIOCNOTTY failed to clear a back-pointer from the structure representing the...

CVE-2026-5398: Use After Free

The implementation of TIOCNOTTY failed to clear a back-pointer from the structure representing the controlling terminal to the calling process' session. If the invoking process then exits, the terminal structure may end up containing a pointer to freed memory. A malicious process can abuse the...

FreeBSD Security Advisory - FreeBSD-SA-26:10.tty

FreeBSD Security Advisory - The implementation of TIOCNOTTY failed to clear a back-pointer from the structure representing the controlling terminal to the calling process' session. If the invoking process then exits, the terminal structure may end up containing a pointer to freed memory. A...