From c03a37527f1e0018390727a4b9eb7c33612cd0fd Mon Sep 17 00:00:00 2001
From: Levi Neely <141506390+lneely@users.noreply.github.com>
Date: Tue, 3 Mar 2026 15:58:07 +0100
Subject: [PATCH] Fix NULL-deref in pfs_rename_openfile_locked (#325)

File rename tested, works correctly
---
 pclsync/pfs.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/pclsync/pfs.c b/pclsync/pfs.c
index 1466d27..3868a08 100644
--- a/pclsync/pfs.c
+++ b/pclsync/pfs.c
@@ -309,8 +309,13 @@ int pfs_rename_openfile_locked(psync_fsfileid_t fileid,
         fl->currentfolder =
             pfs_task_get_or_create_folder_tasks_locked(folderid);
       }
+      char *newname = putil_strdup(name);
+      if (!newname) {
+        pthread_mutex_unlock(&fl->mutex);
+        return -ENOMEM;
+      }
       free(fl->currentname);
-      fl->currentname = putil_strdup(name);
+      fl->currentname = newname;
       pthread_mutex_unlock(&fl->mutex);
       return 1;
     }