commit 28d03818df954f4f368ba98e340c068e4e97b603
author Michal Vasko <mvasko@cesnet.cz> Thu Mar 24 15:26:11 2022 +0100
committer Michal Vasko <mvasko@cesnet.cz> Thu Mar 24 15:26:11 2022 +0100
tree e2d9c897b06940f8c3e97510cd94b19ee3805dc2
parent 1f9d98e496068a2436c0bc13cfd52418c637ddd0

tree schema UPDATE check for buffer overflow

src/tree_schema.c

diff --git a/src/tree_schema.c b/src/tree_schema.c
index 1ac76bc..1f9fd69 100644
--- a/src/tree_schema.c
+++ b/src/tree_schema.c
@@ -762,8 +762,12 @@
                 } else {
                     len = asprintf(&path, "[%s='%%s']%s", key->name, s ? s : "");
                 }
-
                 free(s);
+
+                if (buffer && (buflen <= (size_t)len)) {
+                    /* not enough space in buffer */
+                    break;
+                }
             }
         }