Messages in this thread Patch in this message | | | From | Kees Cook <> | Subject | [PATCH 06/11] crypto: cbc: Remove VLA usage | Date | Wed, 20 Jun 2018 12:04:03 -0700 |
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In the quest to remove all stack VLA usage from the kernel[1], this uses the upper bounds on blocksize.
[1] https://lkml.kernel.org/r/CA+55aFzCG-zNmZwX4A2FQpadafLfEzK6CC=qPXydAacU1RqZWA@mail.gmail.com
Signed-off-by: Kees Cook <keescook@chromium.org> --- include/crypto/cbc.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/crypto/cbc.h b/include/crypto/cbc.h index f5b8bfc22e6d..260096bcf99b 100644 --- a/include/crypto/cbc.h +++ b/include/crypto/cbc.h @@ -113,7 +113,7 @@ static inline int crypto_cbc_decrypt_inplace( unsigned int bsize = crypto_skcipher_blocksize(tfm); unsigned int nbytes = walk->nbytes; u8 *src = walk->src.virt.addr; - u8 last_iv[bsize]; + u8 last_iv[CRYPTO_ALG_MAX_BLOCKSIZE]; /* Start of the last block. */ src += nbytes - (nbytes & (bsize - 1)) - bsize; -- 2.17.1
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