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ALSA: asihpi: fix kernel memory disclosure 

Some elements in hr are not cleared before being copied to user space,
leaking kernel heap memory to user space. For example, this happens in
the error handling code for the HPI_ADAPTER_DELETE case. Zero the memory
before it's copied.

Signed-off-by: Vlad Tsyrklevich <vlad@tsyrklevich.net>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Vlad Tsyrklevich 2016-10-13 14:36:41 +02:00 committed by Takashi Iwai
parent f771d5bb71
commit d69bb92e40
1 changed files with 1 additions and 1 deletions
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2
sound/pci/asihpi/hpioctl.c
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@ -111,7 +111,7 @@ long asihpi_hpi_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
return -EINVAL;
hm = kmalloc(sizeof(*hm), GFP_KERNEL);
hr = kmalloc(sizeof(*hr), GFP_KERNEL);
hr = kzalloc(sizeof(*hr), GFP_KERNEL);
if (!hm || !hr) {
err = -ENOMEM;
goto out;