From f87e170bee9d90676fbe1eae7deff45ab7f6d610 Mon Sep 17 00:00:00 2001
From: Daniel Koepping <elkoled@gmail.com>
Date: Thu, 10 Sep 2026 18:17:40 -0700
Subject: [PATCH] reject incomplete model buffers (#38852)

---
 openpilot/selfdrive/modeld/helpers.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/openpilot/selfdrive/modeld/helpers.py b/openpilot/selfdrive/modeld/helpers.py
index d081050055..0fdd1629ba 100644
--- a/openpilot/selfdrive/modeld/helpers.py
+++ b/openpilot/selfdrive/modeld/helpers.py
@@ -41,7 +41,8 @@ def load_oob(f):
   def buffers():
     while (h := f.read(8)):
       pb = pickle.PickleBuffer(bytearray(struct.unpack('<q', h)[0]))
-      f.readinto(pb)
+      if f.readinto(pb) != pb.raw().nbytes:
+        raise EOFError("incomplete model buffer")
       yield pb
   return pickle.load(io.BytesIO(opcodes), buffers=buffers())