bianbu-repo-mirror/bianbu-linux-6.6
1
0
Fork 0
mirror of https://gitee.com/bianbu-linux/linux-6.6 synced 2025-04-24 14:07:52 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

samples/bpf: Fix buffer overflow in tcp_basertt

Browse source 
Using sizeof(nv) or strlen(nv)+1 is correct.

Fixes: c890063e44 ("bpf: sample BPF_SOCKET_OPS_BASE_RTT program")
Signed-off-by: Pengcheng Yang <yangpc@wangsu.com>
Link: https://lore.kernel.org/r/1683276658-2860-1-git-send-email-yangpc@wangsu.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Pengcheng Yang 2023-05-05 16:50:58 +08:00 • committed by Alexei Starovoitov
parent 6953518629
commit f4dea9689c
1 changed files with 1 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

2
samples/bpf/tcp_basertt_kern.c
View file

@ -47,7 +47,7 @@ int bpf_basertt(struct bpf_sock_ops *skops)
case BPF_SOCK_OPS_BASE_RTT:
n = bpf_getsockopt(skops, SOL_TCP, TCP_CONGESTION,
cong, sizeof(cong));
if (!n && !__builtin_memcmp(cong, nv, sizeof(nv)+1)) {
if (!n && !__builtin_memcmp(cong, nv, sizeof(nv))) {
/* Set base_rtt to 80us */
rv = 80;
} else if (n) {