1 files changed, 3 insertions, 0 deletions

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: