From 1cc8d8413327a684cd5e93cd52ececb0223bb40b Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Mon, 21 Jul 2014 19:08:13 -0700 Subject: mtd: terminate user-provided string Noticed by Coverity as a potential security issue. Signed-off-by: Brian Norris --- drivers/mtd/mtdchar.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers/mtd') diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c index a0f54e80670c..53563955931b 100644 --- a/drivers/mtd/mtdchar.c +++ b/drivers/mtd/mtdchar.c @@ -549,6 +549,9 @@ static int mtdchar_blkpg_ioctl(struct mtd_info *mtd, if (mtd_is_partition(mtd)) return -EINVAL; + /* Sanitize user input */ + p.devname[BLKPG_DEVNAMELTH - 1] = '\0'; + return mtd_add_partition(mtd, p.devname, p.start, p.length); case BLKPG_DEL_PARTITION: -- cgit v1.2.3