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-rw-r--r--net/sctp/auth.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/net/sctp/auth.c b/net/sctp/auth.c
index 675a5c3e68a6..1fcb4cf2f4c9 100644
--- a/net/sctp/auth.c
+++ b/net/sctp/auth.c
@@ -80,6 +80,10 @@ static struct sctp_auth_bytes *sctp_auth_create_key(__u32 key_len, gfp_t gfp)
{
struct sctp_auth_bytes *key;
+ /* Verify that we are not going to overflow INT_MAX */
+ if ((INT_MAX - key_len) < sizeof(struct sctp_auth_bytes))
+ return NULL;
+
/* Allocate the shared key */
key = kmalloc(sizeof(struct sctp_auth_bytes) + key_len, gfp);
if (!key)