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Fix memory error in asn1_get_alg()
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@ -292,8 +292,11 @@ int asn1_get_alg( unsigned char **p,
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ASN1_CONSTRUCTED | ASN1_SEQUENCE ) ) != 0 )
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return( ret );
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end = *p + len;
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if( ( end - *p ) < 1 )
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return( POLARSSL_ERR_ASN1_OUT_OF_DATA );
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alg->tag = **p;
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end = *p + len;
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if( ( ret = asn1_get_tag( p, end, &alg->len, ASN1_OID ) ) != 0 )
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return( ret );
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