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crypto: chacha20poly1305 - Annotate struct chachapoly_ctx with __counted_by()

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Add the __counted_by compiler attribute to the flexible array member
salt to improve access bounds-checking via CONFIG_UBSAN_BOUNDS and
CONFIG_FORTIFY_SOURCE.

Reviewed-by: Kees Cook <kees@kernel.org>
Signed-off-by: Thorsten Blum <thorsten.blum@toblux.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Thorsten Blum 2024-08-06 00:11:30 +02:00 • committed by Herbert Xu
parent 2d6213bd59
commit 18e2188c4b
1 changed files with 1 additions and 1 deletions
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crypto/chacha20poly1305.c
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@ -27,7 +27,7 @@ struct chachapoly_ctx {
struct crypto_ahash *poly;
/* key bytes we use for the ChaCha20 IV */
unsigned int saltlen;
u8 salt[];
u8 salt[] __counted_by(saltlen);
};
struct poly_req {