Re: [PATCH] crypto: acomp - Fix CFI failure due to type punning

From: Herbert Xu
Date: Fri Jul 18 2025 - 07:12:23 EST


Eric Biggers <ebiggers@xxxxxxxxxx> wrote:
> To avoid a crash when control flow integrity is enabled, make the
> workspace ("stream") free function use a consistent type, and call it
> through a function pointer that has that same type.
>
> Fixes: 42d9f6c77479 ("crypto: acomp - Move scomp stream allocation code into acomp")
> Cc: stable@xxxxxxxxxxxxxxx
> Signed-off-by: Eric Biggers <ebiggers@xxxxxxxxxx>
> ---
> crypto/deflate.c | 7 ++++++-
> crypto/zstd.c | 7 ++++++-
> include/crypto/internal/acompress.h | 5 +----
> 3 files changed, 13 insertions(+), 6 deletions(-)

Patch applied. Thanks.
--
Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt