Messages in this thread Patch in this message | | | From | Aditya Pakki <> | Subject | [PATCH] isdn: mISDN: Fix potential NULL pointer dereference of kzalloc | Date | Sat, 2 Mar 2019 15:20:43 -0600 |
| |
Allocating memory via kzalloc for phi may fail and causes a NULL pointer dereference. This patch avoids such a scenario.
Signed-off-by: Aditya Pakki <pakki001@umn.edu> --- drivers/isdn/hardware/mISDN/hfcsusb.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/isdn/hardware/mISDN/hfcsusb.c b/drivers/isdn/hardware/mISDN/hfcsusb.c index 124ff530da82..26e3182bbca8 100644 --- a/drivers/isdn/hardware/mISDN/hfcsusb.c +++ b/drivers/isdn/hardware/mISDN/hfcsusb.c @@ -263,6 +263,9 @@ hfcsusb_ph_info(struct hfcsusb *hw) int i; phi = kzalloc(struct_size(phi, bch, dch->dev.nrbchan), GFP_ATOMIC); + if (!phi) + return; + phi->dch.ch.protocol = hw->protocol; phi->dch.ch.Flags = dch->Flags; phi->dch.state = dch->state; -- 2.17.1
| |