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author | Stefan Richter <stefanr@s5r6.in-berlin.de> | 2010-02-19 20:00:02 (GMT) |
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committer | Stefan Richter <stefanr@s5r6.in-berlin.de> | 2010-02-24 19:36:54 (GMT) |
commit | 137d9ebfdbaa45c01f9f0f6d5121ae6f1eb942bd (patch) | |
tree | 982433a233709231acc7ae92d31dbee166602e8e /drivers/firewire | |
parent | 58aaa5427663b680030aa58aaaf1e2738564b8dc (diff) | |
download | linux-137d9ebfdbaa45c01f9f0f6d5121ae6f1eb942bd.tar.xz |
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 <stefanr@s5r6.in-berlin.de>
Diffstat (limited to 'drivers/firewire')
-rw-r--r-- | drivers/firewire/core-device.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/firewire/core-device.c b/drivers/firewire/core-device.c index 150a8ba..f612119 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; |