lib/cmdline.c: fix get_options() overflow while parsing ranges
authorIlya Matveychikov <matvejchikov@gmail.com>
Fri, 23 Jun 2017 22:08:49 +0000 (15:08 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Fri, 23 Jun 2017 23:15:55 +0000 (16:15 -0700)
commita91e0f680bcd9e10c253ae8b62462a38bd48f09f
tree38c36b40b5f3c74182d14c346e04c5ae1c853ba2
parent1eb643d02b21412e603b42cdd96010a2ac31c05f
lib/cmdline.c: fix get_options() overflow while parsing ranges

When using get_options() it's possible to specify a range of numbers,
like 1-100500.  The problem is that it doesn't track array size while
calling internally to get_range() which iterates over the range and
fills the memory with numbers.

Link: http://lkml.kernel.org/r/2613C75C-B04D-4BFF-82A6-12F97BA0F620@gmail.com
Signed-off-by: Ilya V. Matveychikov <matvejchikov@gmail.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
lib/cmdline.c