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Apparently needed for some glibc/openssl combinations.
Patch from Arkadiusz Miśkiewicz
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Requested for Linux/s390; patch from Eduardo Barretto via bz#2752;
ok dtucker
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The new timing attack mitigation code uses nanosleep in the preauth
codepath, allow in sandbox.
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Pointed out by jjelen at redhat.com.
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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.
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Patch from Jakub Jelen
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Patch from Mike Frysinger
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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@
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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.
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Based on patch from Eduardo Barretto; ok dtucker@
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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
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Avoids sandbox violations for some krb/gssapi libraries.
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add getpid to sandbox, reachable by grace_alarm_handler
reported by Jakub Jelen; bz#2419
Upstream-ID: d0da1117c16d4c223954995d35b0f47c8f684cd8
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patch from Jakub Jelen
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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.
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Also resort and tidy syscall list. Based on patches by Jakub Jelen
bz#2361; ok dtucker@
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patch from Felix von Leitner; ok dtucker
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remind myself to add sandbox violation logging via the log socket.
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__NR_shutdown; some go via the socketcall(2) multiplexer.
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syscall from sandboxes; it may be called by packet_close.
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[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@
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seccomp-bpf sandbox on ARM. Patch from shawnlandden AT gmail.com;
ok dtucker
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not available. Allows use of sshd compiled on host with a filter-capable
kernel on hosts that lack the support. bz#2011 ok dtucker@
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mode for Linux's new seccomp filter; patch from Will Drewry; feedback
and ok dtucker@
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