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Guard check in module loader against integer overflow
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 <email@example.com> Signed-off-by: Rusty Russell <firstname.lastname@example.org>
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