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| author |   Sudip Mukherjee <sudipm.mukherjee@gmail.com> | 2016-04-06 12:25:39 +0100 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-04-30 09:26:55 -0700 |
| commit | 76bbdcb35ebb0e9c5315c4b249cd883cca9e065d (patch) | |
| tree | 6d9210f89bb437f0cbb7400f4972731451c06f7e /drivers/tty | |
| parent | serial: 8250: Remove unused define (diff) | |
| download | linux-dev-76bbdcb35ebb0e9c5315c4b249cd883cca9e065d.tar.xz linux-dev-76bbdcb35ebb0e9c5315c4b249cd883cca9e065d.zip | |
tty: ipwireless: fix possible NULL dereference
The function alloc_ctrl_packet() can fail and return NULL. Incase it
fails print an error message and exit.
Signed-off-by: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk>
Reviewed-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/ipwireless/hardware.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/tty/ipwireless/hardware.c b/drivers/tty/ipwireless/hardware.c index ad7031a4f3c4..df0204b6148f 100644 --- a/drivers/tty/ipwireless/hardware.c +++ b/drivers/tty/ipwireless/hardware.c @@ -1572,6 +1572,11 @@ static void handle_received_SETUP_packet(struct ipw_hardware *hw, sizeof(struct ipw_setup_reboot_msg_ack), ADDR_SETUP_PROT, TL_PROTOCOLID_SETUP, TL_SETUP_SIGNO_REBOOT_MSG_ACK); + if (!packet) { + pr_err(IPWIRELESS_PCCARD_NAME + ": Not enough memory to send reboot packet"); + break; + } packet->header.length = sizeof(struct TlSetupRebootMsgAck); send_packet(hw, PRIO_SETUP, &packet->header); |