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| author | Matt Caswell <matt@openssl.org> | 2015-03-19 10:16:32 +0000 |
|---|---|---|
| committer | Matt Caswell <matt@openssl.org> | 2015-03-19 13:00:11 +0000 |
| commit | dfc3e9698b755e179e8ae8e3cef7ff4e07cfd500 (patch) | |
| tree | 0a5b4f5ca84423a7e92ebfe67cee6913e0216ff7 | |
| parent | ab1c3627b71c43c6bd8259119ac871093651f8a2 (diff) | |
| download | openssl-dfc3e9698b755e179e8ae8e3cef7ff4e07cfd500.tar.gz | |
Fix a failure to NULL a pointer freed on error.
Reported by the LibreSSL project as a follow on to CVE-2015-0209
Reviewed-by: Richard Levitte <levitte@openssl.org>
| -rw-r--r-- | crypto/asn1/x_x509.c | 12 | ||||
| -rw-r--r-- | crypto/ec/ec_asn1.c | 7 |
2 files changed, 16 insertions, 3 deletions
diff --git a/crypto/asn1/x_x509.c b/crypto/asn1/x_x509.c index 2644d5f279..d51b76e79e 100644 --- a/crypto/asn1/x_x509.c +++ b/crypto/asn1/x_x509.c @@ -172,8 +172,14 @@ X509 *d2i_X509_AUX(X509 **a, const unsigned char **pp, long length) { const unsigned char *q; X509 *ret; + int freeret = 0; + /* Save start position */ q = *pp; + + if(!a || *a == NULL) { + freeret = 1; + } ret = d2i_X509(a, pp, length); /* If certificate unreadable then forget it */ if (!ret) @@ -186,7 +192,11 @@ X509 *d2i_X509_AUX(X509 **a, const unsigned char **pp, long length) goto err; return ret; err: - X509_free(ret); + if(freeret) { + X509_free(ret); + if (a) + *a = NULL; + } return NULL; } diff --git a/crypto/ec/ec_asn1.c b/crypto/ec/ec_asn1.c index 6907436878..f14011c849 100644 --- a/crypto/ec/ec_asn1.c +++ b/crypto/ec/ec_asn1.c @@ -1213,16 +1213,19 @@ EC_KEY *d2i_ECParameters(EC_KEY **a, const unsigned char **in, long len) ECerr(EC_F_D2I_ECPARAMETERS, ERR_R_MALLOC_FAILURE); return NULL; } - if (a) - *a = ret; } else ret = *a; if (!d2i_ECPKParameters(&ret->group, in, len)) { ECerr(EC_F_D2I_ECPARAMETERS, ERR_R_EC_LIB); + if (a == NULL || *a != ret) + EC_KEY_free(ret); return NULL; } + if (a) + *a = ret; + return ret; } |