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crypto: tegra - Set IV to NULL explicitly for AES ECB

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It may happen that the variable req->iv may have stale values or
zero sized buffer by default and may end up getting used during
encryption/decryption. This inturn may corrupt the results or break the
operation. Set the req->iv variable to NULL explicitly for algorithms
like AES-ECB where IV is not used.

Fixes: 0880bb3b00 ("crypto: tegra - Add Tegra Security Engine driver")
Signed-off-by: Akhil R <akhilrajeev@nvidia.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Akhil R 2025-02-24 14:46:08 +05:30 • committed by Herbert Xu
parent ce390d6c26
commit bde5582208
1 changed files with 3 additions and 0 deletions
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3
drivers/crypto/tegra/tegra-se-aes.c
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@ -446,6 +446,9 @@ static int tegra_aes_crypt(struct skcipher_request *req, bool encrypt)
if (!req->cryptlen) if (!req->cryptlen)
return 0; return 0;
if (ctx->alg == SE_ALG_ECB)
req->iv = NULL;
rctx->encrypt = encrypt; rctx->encrypt = encrypt;
rctx->config = tegra234_aes_cfg(ctx->alg, encrypt); rctx->config = tegra234_aes_cfg(ctx->alg, encrypt);
rctx->crypto_config = tegra234_aes_crypto_cfg(ctx->alg, encrypt); rctx->crypto_config = tegra234_aes_crypto_cfg(ctx->alg, encrypt);