diff options
Diffstat (limited to 'src/nlmsg.c')
| -rw-r--r-- | src/nlmsg.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/src/nlmsg.c b/src/nlmsg.c index c634501..30a7e63 100644 --- a/src/nlmsg.c +++ b/src/nlmsg.c @@ -152,9 +152,14 @@ EXPORT_SYMBOL void *mnl_nlmsg_get_payload_offset(const struct nlmsghdr *nlh, */ EXPORT_SYMBOL bool mnl_nlmsg_ok(const struct nlmsghdr *nlh, int len) { - return len >= (int)sizeof(struct nlmsghdr) && + size_t ulen = len; + + if (len < 0) + return false; + + return ulen >= sizeof(struct nlmsghdr) && nlh->nlmsg_len >= sizeof(struct nlmsghdr) && - (int)nlh->nlmsg_len <= len; + nlh->nlmsg_len <= ulen; } /** |