diff --git a/2b46876dcccd95eeb329477ba6f413eb485703a8.patch b/2b46876dcccd95eeb329477ba6f413eb485703a8.patch
new file mode 100644
index 0000000..7396129
--- /dev/null
+++ b/2b46876dcccd95eeb329477ba6f413eb485703a8.patch
@@ -0,0 +1,38 @@
+From 2b46876dcccd95eeb329477ba6f413eb485703a8 Mon Sep 17 00:00:00 2001
+From: Emilio Pozuelo Monfort <pochu27@gmail.com>
+Date: Tue, 8 Dec 2020 22:49:11 -0800
+Subject: [PATCH] clamonacc: Fix stack buffer overflow with old curl
+
+curl_easy_getinfo expects a long for CURLINFO_ACTIVESOCKET, but
+curl_socket_t is an int, which was causing a stack buffer overflow
+and crash.
+---
+ clamonacc/client/communication.c | 8 ++++++--
+ 1 file changed, 6 insertions(+), 2 deletions(-)
+
+diff --git a/clamonacc/client/communication.c b/clamonacc/client/communication.c
+index 2af46aa15a..1d2e53c03e 100644
+--- a/clamonacc/client/communication.c
++++ b/clamonacc/client/communication.c
+@@ -87,7 +87,9 @@ int onas_sendln(CURL *curl, const void *line, size_t len, int64_t timeout)
+     curlcode = curl_easy_getinfo(curl, CURLINFO_ACTIVESOCKET, &sockfd);
+ #else
+     /* Use deprecated CURLINFO_LASTSOCKET option */
+-    curlcode = curl_easy_getinfo(curl, CURLINFO_LASTSOCKET, &sockfd);
++    long long_sockfd;
++    curlcode = curl_easy_getinfo(curl, CURLINFO_LASTSOCKET, &long_sockfd);
++    sockfd = (curl_socket_t) long_sockfd;
+ #endif
+ 
+     if (CURLE_OK != curlcode) {
+@@ -152,7 +154,9 @@ int onas_recvln(struct onas_rcvln *rcv_data, char **ret_bol, char **ret_eol, int
+     rcv_data->curlcode = curl_easy_getinfo(rcv_data->curl, CURLINFO_ACTIVESOCKET, &sockfd);
+ #else
+     /* Use deprecated CURLINFO_LASTSOCKET option */
+-    rcv_data->curlcode = curl_easy_getinfo(rcv_data->curl, CURLINFO_LASTSOCKET, &sockfd);
++    long long_sockfd;
++    rcv_data->curlcode = curl_easy_getinfo(rcv_data->curl, CURLINFO_LASTSOCKET, &long_sockfd);
++    sockfd = (curl_socket_t) long_sockfd;
+ #endif
+ 
+     if (CURLE_OK != rcv_data->curlcode) {
diff --git a/clamav.spec b/clamav.spec
index 8e61ec8..4bed9ae 100644
--- a/clamav.spec
+++ b/clamav.spec
@@ -42,7 +42,7 @@
 Summary:    End-user tools for the Clam Antivirus scanner
 Name:       clamav
 Version:    0.103.0
-Release:    2%{?dist}
+Release:    3%{?dist}
 License:    %{?with_unrar:proprietary}%{!?with_unrar:GPLv2}
 URL:        https://www.clamav.net/
 %if %{with unrar}
@@ -93,6 +93,7 @@ Patch2:     clamav-0.99-private.patch
 Patch4:     clamav-check.patch
 # Modify clamav-clamonacc.service for Fedora compatibility
 Patch5:     clamav-clamonacc-service.patch
+Patch6:     https://github.com/Cisco-Talos/clamav-devel/commit/2b46876dcccd95eeb329477ba6f413eb485703a8.patch
 
 BuildRequires:  autoconf
 BuildRequires:  automake
@@ -260,6 +261,7 @@ This package contains files which are needed to run the clamav-milter.
 %patch2 -p1 -b .private
 %patch4 -p1 -b .check
 %patch5 -p1 -b .clamonacc-service
+%patch6 -p1 -b .clamonacc-el7
 
 install -p -m0644 %SOURCE300 clamav-milter/
 
@@ -629,6 +631,9 @@ fi
 
 
 %changelog
+* Wed Jan 27 2021 Sérgio Basto <sergio@serjux.com> - 0.103.0-3
+- Add upstream patch clamonacc: Fix stack buffer overflow with old curl
+
 * Tue Jan 26 2021 Fedora Release Engineering <releng@fedoraproject.org> - 0.103.0-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_34_Mass_Rebuild