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SubjectRe: [PATCH v3] comedi: integer overflow in do_insnlist_ioctl()
On Fri, Nov 25, 2011 at 04:46:51PM -0500, Xi Wang wrote:
> There is a potential integer overflow in do_insnlist_ioctl() if
> userspace passes in a large insnlist.n_insns. The call to kmalloc()
> would allocate a small buffer, leading to a memory corruption.
> The bug was reported by Dan Carpenter <>
> and Haogang Chen <>. The patch was suggested by
> Ian Abbott <> and Lars-Peter Clausen <>.
> Signed-off-by: Xi Wang <>

Hm, I already applied Dan's previous patch, what should I do with this
one now? Revert Dan's and apply this one, or apply both of them, or
something else?


greg k-h

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