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| author |   Vasiliy Kulikov <segooon@gmail.com> | 2010-11-06 17:41:35 +0300 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@suse.de> | 2010-11-11 07:14:06 -0800 |
| commit | 5dc92cf1d0b4b0debbd2e333b83f9746c103533d (patch) | |
| tree | 78a4f6d2b7b40ce1614717511c99a24ea9ca0434 /drivers/usb | |
| parent | usb: subtle increased memory usage in u_serial (diff) | |
| download | linux-dev-5dc92cf1d0b4b0debbd2e333b83f9746c103533d.tar.xz linux-dev-5dc92cf1d0b4b0debbd2e333b83f9746c103533d.zip | |
usb: misc: sisusbvga: fix information leak to userland
Structure sisusb_info is copied to userland with "sisusb_reserved" field
uninitialized. It leads to leaking of contents of kernel stack memory.
Signed-off-by: Vasiliy Kulikov <segooon@gmail.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/misc/sisusbvga/sisusb.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/usb/misc/sisusbvga/sisusb.c b/drivers/usb/misc/sisusbvga/sisusb.c index 70d00e99a4b4..dd573abd2d1e 100644 --- a/drivers/usb/misc/sisusbvga/sisusb.c +++ b/drivers/usb/misc/sisusbvga/sisusb.c @@ -3008,6 +3008,7 @@ sisusb_ioctl(struct file *file, unsigned int cmd, unsigned long arg) #else x.sisusb_conactive = 0; #endif + memset(x.sisusb_reserved, 0, sizeof(x.sisusb_reserved)); if (copy_to_user((void __user *)arg, &x, sizeof(x))) retval = -EFAULT; |