Re: [PATCH v3] fs/binfmt_elf: Fix memsz > filesz handling

[Kees Cook]

On Fri, Nov 11, 2022 at 03:59:08AM +0000, Pedro Falcato wrote:
> We could of course also just sort the program headers at load time,
> but I assume that's unwanted overhead for most well behaved ELF
> program headers :)

Large refactoring of the ELF loader needs proper unit testing, and we're
still a bit away from that existing. In the meantime, we'll need to make
very very small changes to fix bugs. I've sent a minimal change which I
think should fix the problem (now at v2 since right after sending it I
realized I was trading one accidentally correct state for another in the
v1):
https://lore.kernel.org/linux-hardening/20221111061315.gonna.703-kees@xxxxxxxxxx/

-- 
Kees Cook