Yangxi Xiang 39cdb68c64 vt: fix memory overlapping when deleting chars in the buffer ... A memory overlapping copy occurs when deleting a long line. This memory overlapping copy can cause data corruption when scr_memcpyw is optimized to memcpy because memcpy does not ensure its behavior if the destination buffer overlaps with the source buffer. The line buffer is not always broken, because the memcpy utilizes the hardware acceleration, whose result is not deterministic. Fix this problem by using replacing the scr_memcpyw with scr_memmovew. Fixes: 81732c3b2f ("tty vt: Fix line garbage in virtual console on command line edition") Cc: stable <stable@kernel.org> Signed-off-by: Yangxi Xiang <xyangxi5@gmail.com> Link: https://lore.kernel.org/r/20220628093322.5688-1-xyangxi5@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2022-06-30 17:17:40 +02:00
..
.gitignore	.gitignore: prefix local generated files with a slash	2021-05-02 00:43:35 +09:00
conmakehash.c
consolemap.c	vt/consolemap: do font sum unsigned	2021-01-07 16:17:31 +01:00
cp437.uni
defkeymap.c_shipped	vt: keyboard, defkeymap.c_shipped, approach the unicode table	2021-01-07 16:17:31 +01:00
defkeymap.map
keyboard.c	tty: Fix the keyboard led light display problem	2021-12-21 09:19:14 +01:00
Makefile
selection.c	tty: vt: selection: Correct misspelled function sel_loadlut()	2021-05-20 17:05:33 +02:00
vc_screen.c
vt.c	vt: fix memory overlapping when deleting chars in the buffer	2022-06-30 17:17:40 +02:00
vt_ioctl.c	vt_ioctl: fix potential spectre v1 in VT_DISALLOCATE	2022-03-18 14:35:01 +01:00