net_sched: fix an OOB access in cls_tcindex

[sagit-ice-cold/kernel_xiaomi_msm8998.git] / fs / ncpfs / ncplib_kernel.c

diff --git a/fs/ncpfs/ncplib_kernel.c b/fs/ncpfs/ncplib_kernel.c
index 88dbbc9..f571570 100644 (file)
--- a/fs/ncpfs/ncplib_kernel.c
+++ b/fs/ncpfs/ncplib_kernel.c
@@ -980,6 +980,10 @@ ncp_read_kernel(struct ncp_server *server, const char *file_id,
                goto out;
        }
        *bytes_read = ncp_reply_be16(server, 0);
+       if (*bytes_read > to_read) {
+               result = -EINVAL;
+               goto out;
+       }
        source = ncp_reply_data(server, 2 + (offset & 1));
 
        memcpy(target, source, *bytes_read);