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tpm2: Do NULL pointer check before dereferencing

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Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
This commit is contained in:
Stefan Berger 2018-03-28 21:39:20 -04:00
parent 34924e876c
commit 90f1760304
1 changed files with 2 additions and 1 deletions
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3
src/tpm2/crypto/openssl/CryptEccSignature.c
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@ -504,12 +504,13 @@ CryptEccSign(
ECC_INITIALIZED(bnD, &signKey->sensitive.sensitive.ecc.b);
ECC_NUM(bnR);
ECC_NUM(bnS);
const ECC_CURVE_DATA *C = AccessCurveData(E);
const ECC_CURVE_DATA *C;
TPM_RC retVal;
//
NOT_REFERENCED(scheme);
if(E == NULL)
ERROR_RETURN(TPM_RC_VALUE);
C = AccessCurveData(E);
signature->signature.ecdaa.signatureR.t.size
= sizeof(signature->signature.ecdaa.signatureR.t.buffer);
signature->signature.ecdaa.signatureS.t.size