diff options
| author | Breno Leitao <leitao@debian.org> | 2025-04-15 12:28:57 -0700 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2025-04-16 18:33:02 -0700 |
| commit | d5ce0ed528c44d4b06d7e543db72c3adb71f4d5f (patch) | |
| tree | 5118eb9d5675b2fa56ee21de030a6b5507a90a2b | |
| parent | b411638fb92509a518506cbf0bbce8a8a3bd07fb (diff) | |
ipv4: Use nlmsg_payload in route file
Leverage the new nlmsg_payload() helper to avoid checking for message
size and then reading the nlmsg data.
Signed-off-by: Breno Leitao <leitao@debian.org>
Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Link: https://patch.msgid.link/20250415-nlmsg_v2-v1-6-a1c75d493fd7@debian.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | net/ipv4/route.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/ipv4/route.c b/net/ipv4/route.c index 22dfc971aab4..49cffbe83802 100644 --- a/net/ipv4/route.c +++ b/net/ipv4/route.c @@ -3205,7 +3205,8 @@ static int inet_rtm_valid_getroute_req(struct sk_buff *skb, struct rtmsg *rtm; int i, err; - if (nlh->nlmsg_len < nlmsg_msg_size(sizeof(*rtm))) { + rtm = nlmsg_payload(nlh, sizeof(*rtm)); + if (!rtm) { NL_SET_ERR_MSG(extack, "ipv4: Invalid header for route get request"); return -EINVAL; @@ -3215,7 +3216,6 @@ static int inet_rtm_valid_getroute_req(struct sk_buff *skb, return nlmsg_parse_deprecated(nlh, sizeof(*rtm), tb, RTA_MAX, rtm_ipv4_policy, extack); - rtm = nlmsg_data(nlh); if ((rtm->rtm_src_len && rtm->rtm_src_len != 32) || (rtm->rtm_dst_len && rtm->rtm_dst_len != 32) || rtm->rtm_table || rtm->rtm_protocol || |