This is a note to let you know that I've just added the patch titled
UBI: fix out of bounds write
to the 4.0-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.patch
and it can be found in the queue-4.0 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From d74adbdb9abf0d2506a6c4afa534d894f28b763f Mon Sep 17 00:00:00 2001
From: Brian Norris <computersforpeace@xxxxxxxxx>
Date: Sat, 28 Feb 2015 02:23:26 -0800
Subject: UBI: fix out of bounds write
From: Brian Norris <computersforpeace@xxxxxxxxx>
commit d74adbdb9abf0d2506a6c4afa534d894f28b763f upstream.
If aeb->len >= vol->reserved_pebs, we should not be writing aeb into the
PEB->LEB mapping.
Caught by Coverity, CID #711212.
Signed-off-by: Brian Norris <computersforpeace@xxxxxxxxx>
Signed-off-by: Richard Weinberger <richard@xxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/mtd/ubi/eba.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/mtd/ubi/eba.c
+++ b/drivers/mtd/ubi/eba.c
@@ -1419,7 +1419,8 @@ int ubi_eba_init(struct ubi_device *ubi,
* during re-size.
*/
ubi_move_aeb_to_list(av, aeb, &ai->erase);
- vol->eba_tbl[aeb->lnum] = aeb->pnum;
+ else
+ vol->eba_tbl[aeb->lnum] = aeb->pnum;
}
}
Patches currently in stable-queue which might be from computersforpeace@xxxxxxxxx are
queue-4.0/ubi-initialize-leb-number-variable.patch
queue-4.0/ubi-fix-out-of-bounds-write.patch
queue-4.0/ubi-account-for-bitflips-in-both-the-vid-header-and-data.patch
queue-4.0/ubi-fix-check-for-too-many-bytes.patch
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