From fbe37c90602fa2d0d7b5f05868d6886b1e216e65 Mon Sep 17 00:00:00 2001 From: Jeremy Drake Date: Fri, 11 Oct 2019 18:31:05 -0700 Subject: Deny (non-fatal) ipc in preauth privsep child. As noted in openssh/openssh-portable#149, i386 does not have have _NR_shmget etc. Instead, it has a single ipc syscall (see man 2 ipc, https://linux.die.net/man/2/ipc). Add this syscall, if present, to the list of syscalls that seccomp will deny non-fatally. --- sandbox-seccomp-filter.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/sandbox-seccomp-filter.c b/sandbox-seccomp-filter.c index 999c46c9..0914e48b 100644 --- a/sandbox-seccomp-filter.c +++ b/sandbox-seccomp-filter.c @@ -177,6 +177,9 @@ static const struct sock_filter preauth_insns[] = { #ifdef __NR_shmdt SC_DENY(__NR_shmdt, EACCES), #endif +#ifdef __NR_ipc + SC_DENY(__NR_ipc, EACCES), +#endif /* Syscalls to permit */ #ifdef __NR_brk -- cgit v1.2.3