From 97efe70b60755a87cfe14d9475c4e90b4acb9145 Mon Sep 17 00:00:00 2001 From: Eytan Lifshitz Date: Mon, 10 Feb 2014 12:55:08 +0200 Subject: [PATCH] wpa_supplicant: Fix NULL dereference in tls_verify_cb() In function tls_verify_cb(), X509_STORE_CTX_get_current_cert() may return NULL, and it will be dereferenced by X509_get_subject_name(). Signed-hostap: Eytan Lifshitz --- src/crypto/tls_openssl.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/src/crypto/tls_openssl.c b/src/crypto/tls_openssl.c index d025ae0a8..a13fa3852 100644 --- a/src/crypto/tls_openssl.c +++ b/src/crypto/tls_openssl.c @@ -1368,6 +1368,9 @@ static int tls_verify_cb(int preverify_ok, X509_STORE_CTX *x509_ctx) const char *err_str; err_cert = X509_STORE_CTX_get_current_cert(x509_ctx); + if (!err_cert) + return 0; + err = X509_STORE_CTX_get_error(x509_ctx); depth = X509_STORE_CTX_get_error_depth(x509_ctx); ssl = X509_STORE_CTX_get_ex_data(x509_ctx,