This series fixes possible out-of-bound memory accesses when users trigger screen resolutions changes with invalid input parameters, e.g. reconfigures screen which is smaller than the current font size, or if the virtual screen size is smaller than the physical screen size. v4: - merged former patch #2 and #3 - added more Reviewed-by - new patch #2 needs more testing. Note added to comit message that another patch needs to be backport as well. Helge Deller (3): fbcon: Disallow setting font bigger than screen size fbcon: Prevent that screen size is smaller than font size fbmem: Prevent invalid virtual screen sizes drivers/video/fbdev/core/fbcon.c | 32 ++++++++++++++++++++++++++++++++ drivers/video/fbdev/core/fbmem.c | 10 +++++++++- include/linux/fbcon.h | 4 ++++ 3 files changed, 45 insertions(+), 1 deletion(-) -- 2.35.3
