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-rw-r--r--fs/nfs_common/nfsacl.c1
-rw-r--r--include/linux/sunrpc/xdr.h1
-rw-r--r--net/sunrpc/xdr.c1
3 files changed, 3 insertions, 0 deletions
diff --git a/fs/nfs_common/nfsacl.c b/fs/nfs_common/nfsacl.c
index 18c58c32e326..251e5a1bb1c4 100644
--- a/fs/nfs_common/nfsacl.c
+++ b/fs/nfs_common/nfsacl.c
@@ -239,6 +239,7 @@ nfsacl_decode(struct xdr_buf *buf, unsigned int base, unsigned int *aclcnt,
if (xdr_decode_word(buf, base, &entries) ||
entries > NFS_ACL_MAX_ENTRIES)
return -EINVAL;
+ nfsacl_desc.desc.array_maxlen = entries;
err = xdr_decode_array2(buf, base + 4, &nfsacl_desc.desc);
if (err)
return err;
diff --git a/include/linux/sunrpc/xdr.h b/include/linux/sunrpc/xdr.h
index 34ec3e8d99b3..23448d0fb5bc 100644
--- a/include/linux/sunrpc/xdr.h
+++ b/include/linux/sunrpc/xdr.h
@@ -177,6 +177,7 @@ typedef int (*xdr_xcode_elem_t)(struct xdr_array2_desc *desc, void *elem);
struct xdr_array2_desc {
unsigned int elem_size;
unsigned int array_len;
+ unsigned int array_maxlen;
xdr_xcode_elem_t xcode;
};
diff --git a/net/sunrpc/xdr.c b/net/sunrpc/xdr.c
index 8a4d9c106af1..fde16f40a581 100644
--- a/net/sunrpc/xdr.c
+++ b/net/sunrpc/xdr.c
@@ -993,6 +993,7 @@ xdr_xcode_array2(struct xdr_buf *buf, unsigned int base,
return -EINVAL;
} else {
if (xdr_decode_word(buf, base, &desc->array_len) != 0 ||
+ desc->array_len > desc->array_maxlen ||
(unsigned long) base + 4 + desc->array_len *
desc->elem_size > buf->len)
return -EINVAL;