Re: [PATCH net v2] net/tls: fix slab-out-of-bounds bug in decrypt_internal

[Jakub Kicinski]

On Thu, 31 Mar 2022 15:04:28 +0800 Ziyang Xuan wrote:
> The memory size of tls_ctx->rx.iv for AES128-CCM is 12 setting in
> tls_set_sw_offload(). The return value of crypto_aead_ivsize()
> for "ccm(aes)" is 16. So memcpy() require 16 bytes from 12 bytes
> memory space will trigger slab-out-of-bounds bug as following:
> 
> ==================================================================
> BUG: KASAN: slab-out-of-bounds in decrypt_internal+0x385/0xc40 [tls]
> Read of size 16 at addr ffff888114e84e60 by task tls/10911

Reviewed-by: Jakub Kicinski <kuba@xxxxxxxxxx>

Thanks!