Commit faec8ab4 authored Apr 01, 2015 by Dan Carpenter Committed by Greg Kroah-Hartman Apr 03, 2015

Staging: lustre: integer overflow in ioctl



hdr->ioc_len is a user controlled u32 so the addition can overflow,
especially on 32 bit systems.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent b311ebac

drivers/staging/lustre/lustre/libcfs/linux/linux-module.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -57,7 +57,7 @@ int libcfs_ioctl_getdata(char buf, char end, void *arg)
		return -EINVAL;
		}

		if (hdr->ioc_len + buf >= end) {
		if (hdr->ioc_len >= end - buf) {
		CERROR("PORTALS: user buffer exceeds kernel buffer\n");
		return -EINVAL;
		}