From 3292da1d4dafab2d18c7b750fa278bcc8a362d04 Mon Sep 17 00:00:00 2001 From: q66 Date: Wed, 20 Dec 2023 04:01:42 +0100 Subject: [PATCH] fix UB-ass UB in scmp_bpf_sim --- tools/scmp_bpf_sim.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/tools/scmp_bpf_sim.c b/tools/scmp_bpf_sim.c index a381314..eeaa5bc 100644 --- a/tools/scmp_bpf_sim.c +++ b/tools/scmp_bpf_sim.c @@ -182,7 +182,8 @@ static void bpf_execute(const struct bpf_program *prg, switch (code) { case BPF_LD+BPF_W+BPF_ABS: if (k < BPF_SYSCALL_MAX) { - uint32_t val = *((uint32_t *)&sys_data_b[k]); + uint32_t val; + memcpy(&val, &sys_data_b[k], sizeof(val)); state.acc = ttoh32(arch, val); } else exit_error(ERANGE, ip_c); -- 2.43.0