From: Kai Ye yekai13@huawei.com
mainline inclusion from mainline-v5.11-rc1 commit 5761498c4d074560b38a203000afc6e971ffaa7f category: bugfix bugzilla: 173981 CVE: NA
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i...
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Fix aead auth setting key process error. if use soft shash function, driver need to use digest size replace of the user input key length.
Signed-off-by: Kai Ye yekai13@huawei.com Signed-off-by: Herbert Xu herbert@gondor.apana.org.au Signed-off-by: Mingqiang Ling lingmingqiang@huawei.com Signed-off-by: Zheng Zengkai zhengzengkai@huawei.com --- drivers/crypto/hisilicon/sec2/sec_crypto.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/crypto/hisilicon/sec2/sec_crypto.c b/drivers/crypto/hisilicon/sec2/sec_crypto.c index b53c2a93a417..fa444d3f0300 100644 --- a/drivers/crypto/hisilicon/sec2/sec_crypto.c +++ b/drivers/crypto/hisilicon/sec2/sec_crypto.c @@ -857,7 +857,7 @@ static int sec_aead_auth_set_key(struct sec_auth_ctx *ctx, struct crypto_authenc_keys *keys) { struct crypto_shash *hash_tfm = ctx->hash_tfm; - int blocksize, ret; + int blocksize, digestsize, ret;
if (!keys->authkeylen) { pr_err("hisi_sec2: aead auth key error!\n"); @@ -865,6 +865,7 @@ static int sec_aead_auth_set_key(struct sec_auth_ctx *ctx, }
blocksize = crypto_shash_blocksize(hash_tfm); + digestsize = crypto_shash_digestsize(hash_tfm); if (keys->authkeylen > blocksize) { ret = crypto_shash_tfm_digest(hash_tfm, keys->authkey, keys->authkeylen, ctx->a_key); @@ -872,7 +873,7 @@ static int sec_aead_auth_set_key(struct sec_auth_ctx *ctx, pr_err("hisi_sec2: aead auth digest error!\n"); return -EINVAL; } - ctx->a_key_len = blocksize; + ctx->a_key_len = digestsize; } else { memcpy(ctx->a_key, keys->authkey, keys->authkeylen); ctx->a_key_len = keys->authkeylen;