Re: [PATCH v2 1/3] vt: avoid a VLA in the unicode screen scroll function
Greg Kroah-Hartman <[email protected]> Sat, 21 Jul 2018 09:20:43 +0200
| Newsgroups | gmane.linux.kernel,gmane.linux.console |
|---|---|
| Message-ID | <[email protected]> |
On Thu, Jul 19, 2018 at 12:05:25AM -0400, Nicolas Pitre wrote: > > The nr argument is typically small: most often nr == 1. However this > could be abused with a very large explicit scroll in a resized screen. > Make the code scroll lines by performing an array rotation operation to > avoid the need for a large temporary space. > > Requested-by: Kees Cook <[email protected]> > Suggested-by: Adam Borowski <[email protected]> > Signed-off-by: Nicolas Pitre <[email protected]> I've now applied this v2 of the patch, thanks for this. greg k-h