diff options
| author | Nicolas Pitre <[email protected]> | 2018-07-19 00:05:25 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <[email protected]> | 2018-07-21 09:19:46 +0200 |
| commit | d541ae4e76ae35b76490206ef946a9124b993e32 (patch) | |
| tree | 5c04d74c91af1d1a312030921042f433a7e8942a /include/linux/console_struct.h | |
| parent | 13aa0a12183f804d95c4c5c4d09df19ea74eb424 (diff) | |
vt: avoid a VLA in the unicode screen scroll function
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]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
Diffstat (limited to 'include/linux/console_struct.h')
0 files changed, 0 insertions, 0 deletions