OpenSSL is using socket() calls (in FIPS mode) when handling ECDSA keys
in privsep child. The socket() syscall is already denied in the seccomp
filter, but in ppc64le kernel, it is implemented using socketcall()
syscall, which is not denied yet (only SYS_SHUTDOWN is allowed) and
therefore fails hard.
Patch from jjelen at redhat.com.
Allow clock_gettime syscall with X32 bit masked off. Apparently
this is required for at least some kernel versions. bz#2142
Patch mostly by Colin Watson. ok dtucker@
This stops the SC_ALLOW(), SC_ALLOW_ARG() and SC_DENY() macros
prepending __NR_ to the syscall number parameter and just makes
them explicit in the macro invocations.
No binary change in stripped object file before/after.
Syscall arguments are passed via an array of 64-bit values in struct
seccomp_data, but we were only inspecting the bottom 32 bits and not
even those correctly for BE systems.
Fortunately, the only case argument inspection was used was in the
socketcall filtering so using this for sandbox escape seems
impossible.
ok dtucker
When doing arg inspection and the syscall doesn't match, skip
past the instruction that reloads the syscall into the accumulator,
since the accumulator hasn't been modified at this point.
[sandbox-null.c sandbox-rlimit.c sandbox-seccomp-filter.c]
[sandbox-systrace.c ssh-sandbox.h sshd.c] Support preauth sandboxing
using the Capsicum API introduced in FreeBSD 10. Patch by Dag-Erling
Smorgrav, updated by Loganaden Velvindron @ AfriNIC; ok dtucker@
