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| author | Rong Tao <rongtao@cestc.cn> | 2022-11-22 10:32:56 +0800 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2022-11-25 00:21:29 +0100 |
| commit | 19a2bdbaaddc71405494bd35fa034d9cf582b05e (patch) | |
| tree | 6289803908f759c1fbd96dace44a5e6902027e11 /samples | |
| parent | b74344cbede22fdfc1366348b3d576eac0131380 (diff) | |
| download | linux-19a2bdbaaddc71405494bd35fa034d9cf582b05e.tar.bz2 | |
samples/bpf: Fix wrong allocation size in xdp_router_ipv4_user
prefix_key->data allocates three bytes using alloca(), but four bytes are
actually accessed in the program.
Signed-off-by: Rong Tao <rongtao@cestc.cn>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/tencent_F9E2E81922B0C181D05B96DAE5AB0ACE6B06@qq.com
Diffstat (limited to 'samples')
| -rw-r--r-- | samples/bpf/xdp_router_ipv4_user.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/samples/bpf/xdp_router_ipv4_user.c b/samples/bpf/xdp_router_ipv4_user.c index 683913bbf279..9d41db09c480 100644 --- a/samples/bpf/xdp_router_ipv4_user.c +++ b/samples/bpf/xdp_router_ipv4_user.c @@ -162,7 +162,7 @@ static void read_route(struct nlmsghdr *nh, int nll) __be32 gw; } *prefix_value; - prefix_key = alloca(sizeof(*prefix_key) + 3); + prefix_key = alloca(sizeof(*prefix_key) + 4); prefix_value = alloca(sizeof(*prefix_value)); prefix_key->prefixlen = 32; |