32 lines
977 B
Diff
32 lines
977 B
Diff
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From 3ef92a657444f172b61f92d5da66d94fa8265602 Mon Sep 17 00:00:00 2001
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From: Lonnie Abelbeck <lonnie@abelbeck.com>
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Date: Tue, 1 Oct 2019 09:05:09 -0500
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Subject: [PATCH] Deny (non-fatal) shmget/shmat/shmdt in preauth privsep child.
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New wait_random_seeded() function on OpenSSL 1.1.1d uses shmget, shmat, and shmdt
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in the preauth codepath, deny (non-fatal) in seccomp_filter sandbox.
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---
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sandbox-seccomp-filter.c | 9 +++++++++
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1 file changed, 9 insertions(+)
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diff --git a/sandbox-seccomp-filter.c b/sandbox-seccomp-filter.c
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index 840c5232b..39dc289e3 100644
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--- a/sandbox-seccomp-filter.c
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+++ b/sandbox-seccomp-filter.c
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@@ -168,6 +168,15 @@ static const struct sock_filter preauth_insns[] = {
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#ifdef __NR_stat64
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SC_DENY(__NR_stat64, EACCES),
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#endif
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+#ifdef __NR_shmget
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+ SC_DENY(__NR_shmget, EACCES),
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+#endif
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+#ifdef __NR_shmat
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+ SC_DENY(__NR_shmat, EACCES),
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+#endif
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+#ifdef __NR_shmdt
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+ SC_DENY(__NR_shmdt, EACCES),
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+#endif
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/* Syscalls to permit */
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#ifdef __NR_brk
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