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-rw-r--r--meta-python/recipes-devtools/python/python3-protobuf/CVE-2026-0994.patch47
1 files changed, 47 insertions, 0 deletions
diff --git a/meta-python/recipes-devtools/python/python3-protobuf/CVE-2026-0994.patch b/meta-python/recipes-devtools/python/python3-protobuf/CVE-2026-0994.patch
new file mode 100644
index 0000000000..156be3be29
--- /dev/null
+++ b/meta-python/recipes-devtools/python/python3-protobuf/CVE-2026-0994.patch
@@ -0,0 +1,47 @@
1From c4eda3e58680528147a4cc7e2b3c9044f795c9c9 Mon Sep 17 00:00:00 2001
2From: zhangskz <sandyzhang@google.com>
3Date: Thu, 29 Jan 2026 14:31:08 -0500
4Subject: [PATCH] Fix Any recursion depth bypass in Python
5 json_format.ParseDict (#25239) (#25586)
6
7This fixes a security vulnerability where nested google.protobuf.Any messages could bypass the max_recursion_depth limit, potentially leading to denial of service via stack overflow.
8
9The root cause was that _ConvertAnyMessage() was calling itself recursively via methodcaller() for nested well-known types, bypassing the recursion depth tracking in ConvertMessage().
10
11The fix routes well-known type parsing through ConvertMessage() to ensure proper recursion depth accounting for all message types including nested Any.
12
13Fixes #25070
14
15Closes #25239
16
17COPYBARA_INTEGRATE_REVIEW=https://github.com/protocolbuffers/protobuf/pull/25239 from aviralgarg05:fix-any-recursion-depth-bypass 3cbbcbea142593d3afd2ceba2db14b05660f62f4
18PiperOrigin-RevId: 862740421
19
20Co-authored-by: Aviral Garg <gargaviral99@gmail.com>
21
22CVE: CVE-2026-0994
23Upstream-Status: Backport [https://github.com/protocolbuffers/protobuf/commit/c4eda3e58680528147a4cc7e2b3c9044f795c9c9]
24Signed-off-by: Peter Marko <peter.marko@siemens.com>
25---
26 google/protobuf/json_format.py | 8 +++++---
27 1 file changed, 5 insertions(+), 3 deletions(-)
28
29diff --git a/google/protobuf/json_format.py b/google/protobuf/json_format.py
30index 1b6ce9d03..9acbaefb5 100644
31--- a/google/protobuf/json_format.py
32+++ b/google/protobuf/json_format.py
33@@ -652,9 +652,11 @@ class _Parser(object):
34 self._ConvertWrapperMessage(value['value'], sub_message,
35 '{0}.value'.format(path))
36 elif full_name in _WKTJSONMETHODS:
37- methodcaller(_WKTJSONMETHODS[full_name][1], value['value'], sub_message,
38- '{0}.value'.format(path))(
39- self)
40+ # For well-known types (including nested Any), use ConvertMessage
41+ # to ensure recursion depth is properly tracked
42+ self.ConvertMessage(
43+ value['value'], sub_message, '{0}.value'.format(path)
44+ )
45 else:
46 del value['@type']
47 self._ConvertFieldValuePair(value, sub_message, path)