[openssl-users] Potential memory leak in RSA_private_decrypt

Wang wangqun at alumni.nus.edu.sg
Mon Nov 6 06:13:46 UTC 2017

Hello, The memory usage of one of our OpenSSL applications increases
quickly.Valgrind detects the only possible leak below. We are using OpenSSL
1.0.2k. ==9721== 520 bytes in 1 blocks are indirectly lost in loss record
1,178 of1,294 ==9721==    at 0x4A0817C: malloc (vg_replace_malloc.c:298)
==9721==    by 0x5B29CD0: comn_malloc (comalloc.c:28) ==9721==    by
0x58E7DD2: comn__csi_malloc (netenc2.c:52) ==9721==    by 0xBBC37EA:
local_malloc (csi_provider_common.c:624) ==9721==    by 0xBC1747F:
default_malloc_ex (mem.c:79) ==9721==    by 0xBC17BA6: CRYPTO_malloc
(mem.c:350) ==9721==    by 0xBC2648F: bn_expand_internal (bn_lib.c:303)
==9721==    by 0xBC266AA: bn_expand2 (bn_lib.c:431) ==9721==    by
0xBC26FF6: BN_set_bit (bn_lib.c:736) ==9721==    by 0xBCE0880:
BN_MONT_CTX_set (bn_mont.c:494) ==9721==    by 0xBCE0A2F:
BN_MONT_CTX_set_locked (bn_mont.c:544) ==9721==    by 0xBCED0C0:
RSA_eay_mod_exp (rsa_eay.c:763) ==9721==    by 0xBCEC747:
RSA_eay_private_decrypt (rsa_eay.c:554) ==9721==    by 0xBC3B7DE:
RSA_private_decrypt (rsa_crpt.c:111) I searched in this forum. I found a
post reporting the same issue, but noresolution provided
I wonder if anyone knows how to resolve this issue? Any help is appreciated.

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