When the size of commandp >= size, array out of bound write occurs because len == 0. Signed-off-by: Hangyu Hua <hbh25y@xxxxxxxxx> --- arch/m68k/kernel/uboot.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/arch/m68k/kernel/uboot.c b/arch/m68k/kernel/uboot.c index 928dbd33fc4a..05eca6f653b5 100644 --- a/arch/m68k/kernel/uboot.c +++ b/arch/m68k/kernel/uboot.c @@ -101,5 +101,8 @@ __init void process_uboot_commandline(char *commandp, int size) } parse_uboot_commandline(commandp, len); - commandp[len - 1] = 0; + if (len > 0) + commandp[len - 1] = 0; + else + commandp[0] = 0; } -- 2.25.1
