diff options
Diffstat (limited to 'net/ipv4/sysctl_net_ipv4.c')
| -rw-r--r-- | net/ipv4/sysctl_net_ipv4.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c index 0902cb32bbad..fcb2cd167f64 100644 --- a/net/ipv4/sysctl_net_ipv4.c +++ b/net/ipv4/sysctl_net_ipv4.c @@ -340,6 +340,10 @@ static int proc_tcp_fastopen_key(struct ctl_table *table, int write, user_key[i * 4 + 1], user_key[i * 4 + 2], user_key[i * 4 + 3]); + + if (WARN_ON_ONCE(off >= tbl.maxlen - 1)) + break; + if (i + 1 < n_keys) off += snprintf(tbl.data + off, tbl.maxlen - off, ","); } |