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From: Ilya Leoshkevich <iii@linux.ibm.com>
To: Alexei Starovoitov <ast@kernel.org>,
	Daniel Borkmann <daniel@iogearbox.net>,
	Andrii Nakryiko <andrii.nakryiko@gmail.com>
Cc: bpf@vger.kernel.org, Heiko Carstens <hca@linux.ibm.com>,
	Vasily Gorbik <gor@linux.ibm.com>,
	Ilya Leoshkevich <iii@linux.ibm.com>
Subject: [PATCH bpf-next] selftests/bpf: Fix map_fds buffer overflow in test_verifier
Date: Mon, 20 Dec 2021 15:04:36 +0100	[thread overview]
Message-ID: <20211220140436.1975970-1-iii@linux.ibm.com> (raw)

do_test_fixup() accesses map_fds[21], which is out of bounds. Extend
map_fds array to 22 elements.

Fixes: e60e6962c503 ("selftests/bpf: Add tests for restricted helpers")
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
---
 tools/testing/selftests/bpf/test_verifier.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/bpf/test_verifier.c b/tools/testing/selftests/bpf/test_verifier.c
index b0bd2a1f6d52..76cd903117af 100644
--- a/tools/testing/selftests/bpf/test_verifier.c
+++ b/tools/testing/selftests/bpf/test_verifier.c
@@ -53,7 +53,7 @@
 #define MAX_INSNS	BPF_MAXINSNS
 #define MAX_TEST_INSNS	1000000
 #define MAX_FIXUPS	8
-#define MAX_NR_MAPS	21
+#define MAX_NR_MAPS	22
 #define MAX_TEST_RUNS	8
 #define POINTER_VALUE	0xcafe4all
 #define TEST_DATA_LEN	64
-- 
2.31.1


             reply	other threads:[~2021-12-20 14:05 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-12-20 14:04 Ilya Leoshkevich [this message]
2021-12-20 15:45 ` [PATCH bpf-next] selftests/bpf: Fix map_fds buffer overflow in test_verifier Yonghong Song

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