From 6b8fa52806b2a7bb443ccf9153b5328b741f68db Mon Sep 17 00:00:00 2001
From: Samuel Thibault <samuel.thibault@ens-lyon.org>
Date: Sun, 1 Jan 2023 13:24:47 +0100
Subject: pflocal: Fix unsafe increment of refs

---
 pflocal/sock.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'pflocal/sock.c')

diff --git a/pflocal/sock.c b/pflocal/sock.c
index 2acf5f4e..174494cd 100644
--- a/pflocal/sock.c
+++ b/pflocal/sock.c
@@ -356,7 +356,11 @@ addr_get_sock (struct addr *addr, struct sock **sock)
   pthread_mutex_lock (&addr->lock);
   *sock = addr->sock;
   if (*sock)
-    (*sock)->refs++;
+    {
+      pthread_mutex_lock (&(*sock)->lock);
+      (*sock)->refs++;
+      pthread_mutex_unlock (&(*sock)->lock);
+    }
   pthread_mutex_unlock (&addr->lock);
   return *sock ? 0 : EADDRNOTAVAIL;
 }
-- 
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