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author | Dan Carpenter <error27@gmail.com> | 2010-10-08 09:03:07 +0200 |
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committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-11-22 10:47:38 -0800 |
commit | f89236606b91a98c1944f59ee66265d15e74a7c2 (patch) | |
tree | f2ea6a44fcbac84dcfd9b17a9f1a643119e205df /drivers/scsi/osst.h | |
parent | f8d4ab3d9bfdb249c3489e92478685b986ef6fcc (diff) |
gdth: integer overflow in ioctl
commit f63ae56e4e97fb12053590e41a4fa59e7daa74a4 upstream.
gdth_ioctl_alloc() takes the size variable as an int.
copy_from_user() takes the size variable as an unsigned long.
gen.data_len and gen.sense_len are unsigned longs.
On x86_64 longs are 64 bit and ints are 32 bit.
We could pass in a very large number and the allocation would truncate
the size to 32 bits and allocate a small buffer. Then when we do the
copy_from_user(), it would result in a memory corruption.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/scsi/osst.h')
0 files changed, 0 insertions, 0 deletions