From b0294bc1ad19e9d2dd03df5faa1ccc395d4ddd4b Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Fri, 13 Jul 2018 18:11:39 +0300 Subject: samples: bpf: ensure that we don't load over MAX_PROGS programs I can't see that we check prog_cnt to ensure it doesn't go over MAX_PROGS. Signed-off-by: Dan Carpenter Signed-off-by: Alexei Starovoitov --- samples/bpf/bpf_load.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/samples/bpf/bpf_load.c b/samples/bpf/bpf_load.c index 89161c9ed466..904e775d1a44 100644 --- a/samples/bpf/bpf_load.c +++ b/samples/bpf/bpf_load.c @@ -107,6 +107,9 @@ static int load_and_attach(const char *event, struct bpf_insn *prog, int size) return -1; } + if (prog_cnt == MAX_PROGS) + return -1; + fd = bpf_load_program(prog_type, prog, insns_cnt, license, kern_version, bpf_log_buf, BPF_LOG_BUF_SIZE); if (fd < 0) { -- cgit v1.2.3