[openssl-users] freeing of X509_CRL object

[Salz, Rich]

The print routine does not free anything.

From: Raghavendra a <raghuasit at gmail.com>
Reply-To: openssl-users <openssl-users at openssl.org>
Date: Friday, May 11, 2018 at 5:53 AM
To: openssl-users <openssl-users at openssl.org>
Subject: [openssl-users] freeing of X509_CRL object

Hi All,
In my program,
converting X509_CRL object to string format using X509_CRL_print and BIO_get_mem_data.  after that if de-allocate  _x509crl  using X509_CRL_free.  it is crashing with below reason.
Valgrind output:
==31919== Invalid read of size 4
==31919==    at 0xB475EF2: CRYPTO_atomic_add (threads_pthread.c:155)
==31919==    by 0xB355537: asn1_do_lock (tasn_utl.c:79)
==31919==    by 0xB352767: asn1_item_embed_free (tasn_fre.c:88)
==31919==    by 0xB3528D4: ASN1_item_free (tasn_fre.c:20)
not sure if X509_CRL_print de-allocates some part of _x509crl ,  external freeing of X509_CRL again leading to double free?
Please help on this issue.

Regards,
Raghavendra



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