Date: Tue, 17 Nov 2015 02:48:42 -0500 From: Daniel Micay <danielmicay@...il.com> To: kernel-hardening@...ts.openwall.com Subject: What ever happened to the kernel UBSan work? I remember seeing the UBSan submission at one point but it appears that it never landed. It would be really nice to have it because among other things it will encourage fixing all kinds of things that conflict with features like SIZE_OVERFLOW and soon RAP. Maybe the kernel could even begin migrating away from relying on signed overflow (by marking the cases of intentional overflow with wrappers around the overflow intrinsics like addw(a, b)). There are also some niches where a 20% performance hit for something like this makes sense (maybe only ~10% for just the parts that are relevant to security, especially if it's just set to trap instead of calling functions producing debug output). Download attachment "signature.asc" of type "application/pgp-signature" (820 bytes)
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