1 files changed, 2 insertions, 1 deletions

diff --git a/crypto/algif_skcipher.c b/crypto/algif_skcipher.c
index df86fb47c3ae..a81c10faf9c4 100644
--- a/crypto/algif_skcipher.c
+++ b/crypto/algif_skcipher.c
@@ -392,7 +392,8 @@ static int skcipher_sendmsg(struct socket *sock, struct msghdr *msg,
 
                 sgl = list_entry(ctx->tsgl.prev, struct skcipher_sg_list, list);
                 sg = sgl->sg;
-                sg_unmark_end(sg + sgl->cur);
+                if (sgl->cur)
+                        sg_unmark_end(sg + sgl->cur - 1);
                 do {
                         i = sgl->cur;
                         plen = min_t(size_t, len, PAGE_SIZE);