CVE-2026-5398

HIGH

8.4

Descricao

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 dangling pointer to grant itself root privileges.

Detalhes CVE

Pontuacao CVSS v3.18.4

SeveridadeHIGH

Vetor CVSSCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Vetor de ataqueLOCAL

ComplexidadeLOW

Privilegios necessariosNONE

Interacao do usuarioNONE

Publicado4/22/2026

Ultima modificacao4/22/2026

Fontenvd

Avistamentos honeypot0

Fraquezas (CWE)

CWE-416

Referencias

https://security.freebsd.org/advisories/FreeBSD-SA-26:10.tty.asc(secteam@freebsd.org)

Correlacoes IOC

Sem correlacoes registradas

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