686e93d6dd
Signed-off-by: jchzhou <zhoujiacheng@iscas.ac.cn> (cherry picked from commit e258642b09c628e0fe81795bf579905504edf8cf)
26 lines
777 B
Diff
26 lines
777 B
Diff
From 3292da1d4dafab2d18c7b750fa278bcc8a362d04 Mon Sep 17 00:00:00 2001
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From: q66 <q66@chimera-linux.org>
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Date: Wed, 20 Dec 2023 04:01:42 +0100
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Subject: [PATCH] fix UB-ass UB in scmp_bpf_sim
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---
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tools/scmp_bpf_sim.c | 3 ++-
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1 file changed, 2 insertions(+), 1 deletion(-)
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diff --git a/tools/scmp_bpf_sim.c b/tools/scmp_bpf_sim.c
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index a381314..eeaa5bc 100644
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--- a/tools/scmp_bpf_sim.c
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+++ b/tools/scmp_bpf_sim.c
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@@ -182,7 +182,8 @@ static void bpf_execute(const struct bpf_program *prg,
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switch (code) {
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case BPF_LD+BPF_W+BPF_ABS:
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if (k < BPF_SYSCALL_MAX) {
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- uint32_t val = *((uint32_t *)&sys_data_b[k]);
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+ uint32_t val;
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+ memcpy(&val, &sys_data_b[k], sizeof(val));
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state.acc = ttoh32(arch, val);
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} else
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exit_error(ERANGE, ip_c);
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--
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2.43.0
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