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Fix memory error in asn1_get_alg()

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Manuel Pégourié-Gonnard 2013-08-15 13:38:13 +02:00 committed by Paul Bakker
parent 06dab806ce
commit ba77bbf840
1 changed files with 4 additions and 1 deletions
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5
library/asn1parse.c
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@ -292,8 +292,11 @@ int asn1_get_alg( unsigned char **p,
ASN1_CONSTRUCTED | ASN1_SEQUENCE ) ) != 0 ) ASN1_CONSTRUCTED | ASN1_SEQUENCE ) ) != 0 )
return( ret ); return( ret );
end = *p + len; if( ( end - *p ) < 1 )
return( POLARSSL_ERR_ASN1_OUT_OF_DATA );
alg->tag = **p; alg->tag = **p;
end = *p + len;
if( ( ret = asn1_get_tag( p, end, &alg->len, ASN1_OID ) ) != 0 ) if( ( ret = asn1_get_tag( p, end, &alg->len, ASN1_OID ) ) != 0 )
return( ret ); return( ret );