Messages in this thread Patch in this message | | | From | Hangyu Hua <> | Subject | [PATCH v2 RESEND] m68k/kernel: array out of bound access in process_uboot_commandline | Date | Thu, 13 Jan 2022 09:58:54 +0800 |
| |
When the size of commandp >= size, array out of bound write occurs because len == 0.
Signed-off-by: Hangyu Hua <hbh25y@gmail.com> --- arch/m68k/kernel/uboot.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/m68k/kernel/uboot.c b/arch/m68k/kernel/uboot.c index 928dbd33fc4a..63eaf3c3ddcd 100644 --- a/arch/m68k/kernel/uboot.c +++ b/arch/m68k/kernel/uboot.c @@ -101,5 +101,6 @@ __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; } -- 2.25.1
| |