Staging: comedi: integer overflow in do_insnlist_ioctl()

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There is an integer overflow here that could cause memory corruption
on 32 bit systems.

insnlist.n_insns could be a very high value size calculation for
kmalloc() could overflow resulting in a smaller "insns" than
expected.  In the for (i = 0; i < insnlist.n_insns; i++) {... loop
we would read past the end of the buffer, possibly corrupting memory
as well.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

...

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Dan Carpenter 2011-11-04 21:20:43 +03:00 • committed by Greg Kroah-Hartman

parent 6a9ce6b654

commit e384a41141

1 changed files with 5 additions and 0 deletions

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drivers/staging/comedi/comedi_fops.c

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