From: Stefan Richter Date: Fri, 19 Feb 2010 20:00:02 +0000 (+0100) Subject: firewire: core: fix an information leak X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=137d9ebfdbaa45c01f9f0f6d5121ae6f1eb942bd;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git firewire: core: fix an information leak If a device exposes a sparsely populated configuration ROM, firewire-core's sysfs interface and character device file interface showed random data in the gaps between config ROM blocks. Fix this by zero-initialization of the config ROM reader's scratch buffer. Signed-off-by: Stefan Richter --- diff --git a/drivers/firewire/core-device.c b/drivers/firewire/core-device.c index 150a8ba97488..f61211977d33 100644 --- a/drivers/firewire/core-device.c +++ b/drivers/firewire/core-device.c @@ -514,6 +514,7 @@ static int read_bus_info_block(struct fw_device *device, int generation) return -ENOMEM; stack = &rom[READ_BIB_ROM_SIZE]; + memset(rom, 0, sizeof(*rom) * READ_BIB_ROM_SIZE); device->max_speed = SCODE_100;