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From 4ae8a24b5ccbee904875a10b7b2301369080a88d Mon Sep 17 00:00:00 2001
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From: Christos Zoulas <christos@zoulas.com>
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Date: Sun, 6 May 2018 16:36:41 +0000
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Subject: [PATCH] add more syscalls; newfstatat is used for stat'ing the magic
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file, getdents64 is used for getting the magic entries during compilation.
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Upstream-commit: aeddbff330fad0edff2ab4b02dbf0863cd593c3c
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Signed-off-by: Kamil Dudka <kdudka@redhat.com>
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---
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src/seccomp.c | 15 ++++++++-------
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1 file changed, 8 insertions(+), 7 deletions(-)
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diff --git a/src/seccomp.c b/src/seccomp.c
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index 7c8a3144..481a5624 100644
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--- a/src/seccomp.c
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+++ b/src/seccomp.c
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@@ -59,12 +59,7 @@ enable_sandbox_basic(void)
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if (prctl(PR_SET_NO_NEW_PRIVS, 1, 0, 0, 0) == -1)
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return -1;
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-#if 0
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- // prevent escape via ptrace
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- prctl(PR_SET_DUMPABLE, 0);
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-#endif
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-
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- if (prctl (PR_SET_DUMPABLE, 0, 0, 0, 0) == -1)
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+ if (prctl(PR_SET_DUMPABLE, 0, 0, 0, 0) == -1)
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return -1;
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// initialize the filter
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@@ -171,6 +166,9 @@ enable_sandbox_full(void)
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ALLOW_RULE(fcntl);
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ALLOW_RULE(fstat);
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ALLOW_RULE(getdents);
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+#ifdef __NR_getdents64
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+ ALLOW_RULE(getdents64);
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+#endif
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ALLOW_RULE(ioctl);
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ALLOW_RULE(lseek);
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ALLOW_RULE(lstat);
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@@ -178,6 +176,9 @@ enable_sandbox_full(void)
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ALLOW_RULE(mprotect);
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ALLOW_RULE(mremap);
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ALLOW_RULE(munmap);
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+#ifdef __NR_newfstatat
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+ ALLOW_RULE(newfstatat);
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+#endif
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ALLOW_RULE(open);
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ALLOW_RULE(openat);
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ALLOW_RULE(pread64);
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--
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2.17.0
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