]> git.baikalelectronics.ru Git - kernel.git/commit
Bluetooth: RFCOMM - Fix info leak in ioctl(RFCOMMGETDEVLIST)
authorMathias Krause <minipli@googlemail.com>
Wed, 15 Aug 2012 11:31:49 +0000 (11:31 +0000)
committerDavid S. Miller <davem@davemloft.net>
Thu, 16 Aug 2012 04:36:30 +0000 (21:36 -0700)
commit65eb600ff4fc5f2c7337cf59c2b3d7011d807f0b
tree7f5be536c6eeacf52b2ef394af981130b83a418b
parentd44339d174ef9c5b1b797827ce49a9a90b451c29
Bluetooth: RFCOMM - Fix info leak in ioctl(RFCOMMGETDEVLIST)

The RFCOMM code fails to initialize the two padding bytes of struct
rfcomm_dev_list_req inserted for alignment before copying it to
userland. Additionally there are two padding bytes in each instance of
struct rfcomm_dev_info. The ioctl() that for disclosures two bytes plus
dev_num times two bytes uninitialized kernel heap memory.

Allocate the memory using kzalloc() to fix this issue.

Signed-off-by: Mathias Krause <minipli@googlemail.com>
Cc: Marcel Holtmann <marcel@holtmann.org>
Cc: Gustavo Padovan <gustavo@padovan.org>
Cc: Johan Hedberg <johan.hedberg@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/bluetooth/rfcomm/tty.c