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mbedtls: fix null pointer dereference of variable iv_off

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iv_off gets dereferenced before being check for NULL
This commit is contained in:
harshal.patil 2023-01-24 12:16:27 +05:30
parent 2c794ea9c4
commit 75899755b7
1 changed files with 2 additions and 3 deletions
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5
components/mbedtls/port/aes/block/esp_aes.c
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@ -314,9 +314,6 @@ int esp_aes_crypt_cfb128(esp_aes_context *ctx,
const unsigned char *input,
unsigned char *output )
{
int c;
size_t n = *iv_off;
if (esp_aes_validate_input(ctx, input, output)) {
return MBEDTLS_ERR_AES_BAD_INPUT_DATA;
}
@ -335,6 +332,8 @@ int esp_aes_crypt_cfb128(esp_aes_context *ctx,
return MBEDTLS_ERR_AES_INVALID_KEY_LENGTH;
}
int c;
size_t n = *iv_off;
esp_aes_acquire_hardware();
ctx->key_in_hardware = 0;
ctx->key_in_hardware = aes_hal_setkey(ctx->key, ctx->key_bytes, ESP_AES_ENCRYPT);