Staging: bcm: info leak in ioctl
authorDan Carpenter <dan.carpenter@oracle.com>
Tue, 29 Oct 2013 20:01:11 +0000 (23:01 +0300)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 13 Nov 2013 03:05:33 +0000 (12:05 +0900)
commit 8d1e72250c847fa96498ec029891de4dc638a5ba upstream.

The DevInfo.u32Reserved[] array isn't initialized so it leaks kernel
information to user space.

Reported-by: Nico Golde <nico@ngolde.de>
Reported-by: Fabian Yamaguchi <fabs@goesec.de>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/staging/bcm/Bcmchar.c

index 35641e5..8fa64d9 100644 (file)
@@ -1960,6 +1960,7 @@ cntrlEnd:
 
                BCM_DEBUG_PRINT(Adapter, DBG_TYPE_OTHERS, OSAL_DBG, DBG_LVL_ALL, "Called IOCTL_BCM_GET_DEVICE_DRIVER_INFO\n");
 
+               memset(&DevInfo, 0, sizeof(DevInfo));
                DevInfo.MaxRDMBufferSize = BUFFER_4K;
                DevInfo.u32DSDStartOffset = EEPROM_CALPARAM_START;
                DevInfo.u32RxAlignmentCorrection = 0;