From 7aae79649d6a88e7104d4d22aa4ba21f4e699e40 Mon Sep 17 00:00:00 2001
From: Richard Weinberger <richard@nod.at>
Date: Sun, 21 Feb 2016 10:53:03 +0100
Subject: [PATCH] ubi: Fix out of bounds write in volume update code

commit e4f6daac20332448529b11f09388f1d55ef2084c upstream.

ubi_start_leb_change() allocates too few bytes.
ubi_more_leb_change_data() will write up to req->upd_bytes +
ubi->min_io_size bytes.

Signed-off-by: Richard Weinberger <richard@nod.at>
Reviewed-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
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Reading git-format-patch failed