This is a note to let you know that I've just added the patch titled
ubi: Fix out of bounds write in volume update code
to the 3.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ubi-fix-out-of-bounds-write-in-volume-update-code.patch
and it can be found in the queue-3.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From e4f6daac20332448529b11f09388f1d55ef2084c Mon Sep 17 00:00:00 2001
From: Richard Weinberger <richard@xxxxxx>
Date: Sun, 21 Feb 2016 10:53:03 +0100
Subject: ubi: Fix out of bounds write in volume update code
From: Richard Weinberger <richard@xxxxxx>
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@xxxxxx>
Reviewed-by: Boris Brezillon <boris.brezillon@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/mtd/ubi/upd.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/mtd/ubi/upd.c
+++ b/drivers/mtd/ubi/upd.c
@@ -193,7 +193,7 @@ int ubi_start_leb_change(struct ubi_devi
vol->changing_leb = 1;
vol->ch_lnum = req->lnum;
- vol->upd_buf = vmalloc(req->bytes);
+ vol->upd_buf = vmalloc(ALIGN((int)req->bytes, ubi->min_io_size));
if (!vol->upd_buf)
return -ENOMEM;
Patches currently in stable-queue which might be from richard@xxxxxx are
queue-3.14/ubi-fix-out-of-bounds-write-in-volume-update-code.patch
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