Re: [PATCH] ima: Add __counted_by for struct modsig and use struct_size()

[Kees Cook]

On Mon, 09 Oct 2023 13:52:45 -0600, Gustavo A. R. Silva wrote:
> Prepare for the coming implementation by GCC and Clang of the __counted_by
> attribute. Flexible array members annotated with __counted_by can have
> their accesses bounds-checked at run-time via CONFIG_UBSAN_BOUNDS (for
> array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family
> functions).
> 
> Also, relocate `hdr->raw_pkcs7_len = sig_len;` so that the __counted_by
> annotation has effect, and flex-array member `raw_pkcs7` can be properly
> bounds-checked at run-time.
> 
> [...]

Applied to for-next/hardening, thanks!

[1/1] ima: Add __counted_by for struct modsig and use struct_size()
      https://git.kernel.org/kees/c/68a8f644575b

Take care,

-- 
Kees Cook