diff options
| author | Lee Jones <[email protected]> | 2020-11-02 14:20:00 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <[email protected]> | 2020-11-03 10:12:10 +0100 |
| commit | e8f50d4bfc8deff61adc74146f130860c4fe356f (patch) | |
| tree | e9080c1c4cb86d70c8e00bbfab7a6c92758ae673 | |
| parent | c78c95f919539cad0308e7de0d5d0d656e4a8e98 (diff) | |
misc: c2port: core: Make copying name from userspace more secure
Currently the 'c2dev' device data is not initialised when it's
allocated. There maybe an issue when using strncpy() to populate the
'name' attribute since a NUL terminator may not be provided in all
use-cases. To prevent such a failing, let's ensure the 'c2dev'
device data area is fully zeroed out on allocation.
Cc: Rodolfo Giometti <[email protected]>
Cc: "Eurotech S.p.A" <[email protected]>
Cc: David Laight <[email protected]>
Reported-by: Geert Uytterhoeven <[email protected]>
Acked-by: Arnd Bergmann <[email protected]>
Signed-off-by: Lee Jones <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
| -rw-r--r-- | drivers/misc/c2port/core.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/misc/c2port/core.c b/drivers/misc/c2port/core.c index 80d87e8a0bea..fb9a1b49ff6d 100644 --- a/drivers/misc/c2port/core.c +++ b/drivers/misc/c2port/core.c @@ -899,7 +899,7 @@ struct c2port_device *c2port_device_register(char *name, unlikely(!ops->c2d_get) || unlikely(!ops->c2d_set)) return ERR_PTR(-EINVAL); - c2dev = kmalloc(sizeof(struct c2port_device), GFP_KERNEL); + c2dev = kzalloc(sizeof(struct c2port_device), GFP_KERNEL); if (unlikely(!c2dev)) return ERR_PTR(-ENOMEM); |