fbcon: Check font dimension limits

Bugzilla: https://bugzilla.redhat.com/2213494
CVE: CVE-2023-3161
Brew: https://brewweb.engineering.redhat.com/brew/taskinfo?taskID=53332026

83f6b9c7 (Ricardo Robaina)
fbcon: Check font dimension limits

drivers/video/fbdev/core/fbcon.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)

Signed-off-by: Ricardo Robaina rrobaina@redhat.com