diff mbox series

[libnftnl] udata: refuse to put more than UINT8_MAX bytes

Message ID 20180428094233.15480-1-fw@strlen.de
State Accepted
Delegated to: Pablo Neira
Headers show
Series [libnftnl] udata: refuse to put more than UINT8_MAX bytes | expand

Commit Message

Florian Westphal April 28, 2018, 9:42 a.m. UTC 
->len is uint8_t, so we can't handle more than this.
---
 src/udata.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/src/udata.c b/src/udata.c
index 6bd965161c43..b5a47295b40d 100644
--- a/src/udata.c
+++ b/src/udata.c
@@ -74,7 +74,7 @@  bool nftnl_udata_put(struct nftnl_udata_buf *buf, uint8_t type, uint32_t len,
 {
 	struct nftnl_udata *attr;
 
-	if (buf->size < len + sizeof(struct nftnl_udata))
+	if (len > UINT8_MAX || buf->size < len + sizeof(struct nftnl_udata))
 		return false;
 
 	attr = (struct nftnl_udata *)buf->end;