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UBI: fix out of bounds write 

If aeb->len >= vol->reserved_pebs, we should not be writing aeb into the
PEB->LEB mapping.

Caught by Coverity, CID #711212.

Cc: stable <stable@vger.kernel.org>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Teresa Remmet <t.remmet@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Brian Norris 2016-05-27 09:44:10 +02:00 committed by Sascha Hauer
parent 2021c973ea
commit 29f82f85c8
1 changed files with 2 additions and 1 deletions
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3
drivers/mtd/ubi/eba.c
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@ -1306,7 +1306,8 @@ int ubi_eba_init(struct ubi_device *ubi, struct ubi_attach_info *ai)
* 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;
}
}