Re: [PATCH] Guard check in module loader against integer overflow

From: Rusty Russell
Date: Wed May 23 2012 - 08:54:21 EST


On Tue, 22 May 2012 15:56:13 +0100, David Howells <dhowells@xxxxxxxxxx> wrote:
> The check:
>
> if (len < hdr->e_shoff + hdr->e_shnum * sizeof(Elf_Shdr))
>
> may not work if there's an overflow in the right-hand side of the condition.
>
> Signed-off-by: David Howells <dhowells@xxxxxxxxxx>

Thanks; though the sanity checks are merely against accidents, not
malice, it's worth fixing.

Applied,
Rusty.
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