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Fix local buffer allocation conditions.

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Signed-off-by: Mateusz Starzyk <mateusz.starzyk@mobica.com>
This commit is contained in:
Mateusz Starzyk 2021-08-02 11:49:58 +02:00
parent ceb5bc6150
commit c562788068
1 changed files with 3 additions and 2 deletions
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5
library/ccm.c
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@ -351,8 +351,9 @@ int mbedtls_ccm_update( mbedtls_ccm_context *ctx,
}
/* Local output is used for decryption only. */
if( ctx->mode == MBEDTLS_CCM_DECRYPT || \
ctx->mode == MBEDTLS_CCM_STAR_DECRYPT )
if( local_output_len > 0 && \
( ctx->mode == MBEDTLS_CCM_DECRYPT || \
ctx->mode == MBEDTLS_CCM_STAR_DECRYPT ) )
{
local_output = mbedtls_calloc( local_output_len, sizeof( *local_output) );
if( local_output == NULL )