| From | Greg Kroah-Hartman <> | Subject | [PATCH 3.19 104/177] UBI: fix check for "too many bytes" | Date | Sat, 2 May 2015 21:02:06 +0200 |
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3.19-stable review patch. If anyone has any objections, please let me know.
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From: Brian Norris <computersforpeace@gmail.com>
commit 299d0c5b27346a77a0777c993372bf8777d4f2e5 upstream.
The comparison from the previous line seems to have been erroneously (partially) copied-and-pasted onto the next. The second line should be checking req.bytes, not req.lnum.
Coverity CID #139400
Signed-off-by: Brian Norris <computersforpeace@gmail.com> [rw: Fixed comparison] Signed-off-by: Richard Weinberger <richard@nod.at> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- drivers/mtd/ubi/cdev.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/mtd/ubi/cdev.c +++ b/drivers/mtd/ubi/cdev.c @@ -454,7 +454,7 @@ static long vol_cdev_ioctl(struct file * /* Validate the request */ err = -EINVAL; if (req.lnum < 0 || req.lnum >= vol->reserved_pebs || - req.bytes < 0 || req.lnum >= vol->usable_leb_size) + req.bytes < 0 || req.bytes > vol->usable_leb_size) break; err = get_exclusive(ubi, desc);
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