[OE-core][wrynose][v2 PATCH 01/27] python3-git: fix CVE-2026-67326

[Yogita Urade <yurade@cisco.com>]

This patch applies the upstream fix as referenced in [2],
using the commit shown in [1].

[1] https://github.com/gitpython-developers/GitPython/commit/54538428f79b0c91ba52cda5229856a6edf7ac06
[2] https://security-tracker.debian.org/tracker/CVE-2026-67326

Signed-off-by: Yogita Urade <yurade@cisco.com>
---
Changes in v2:
- Changed the advisory reference from NVD to Debian Security Tracker.
  Cleaned whitespace in the Backport Changes note.
---
 .../python/python3-git/CVE-2026-67326.patch   | 107 ++++++++++++++++++
 .../python/python3-git_3.1.43.bb              |   1 +
 2 files changed, 108 insertions(+)
 create mode 100644 meta/recipes-devtools/python/python3-git/CVE-2026-67326.patch

diff --git a/meta/recipes-devtools/python/python3-git/CVE-2026-67326.patch b/meta/recipes-devtools/python/python3-git/CVE-2026-67326.patch
new file mode 100644
index 0000000000..82fc987fcc
--- /dev/null
+++ b/meta/recipes-devtools/python/python3-git/CVE-2026-67326.patch
@@ -0,0 +1,107 @@
+From 89d7d33485f67d5f25777079797ae6d1a4538f86 Mon Sep 17 00:00:00 2001
+From: "GPT 5.5" <codex@openai.com>
+Date: Tue, 5 May 2026 21:34:42 +0800
+Subject: [PATCH] Validate config key section names before writing
+
+GitConfigParser already rejected CR, LF, and NUL in config values before
+writing, but section and option names could still reach configparser. Because
+GitPython writes section headers itself, a newline-bearing section name could
+split the output into additional headers.
+
+Reject CR, LF, and NUL in section and option names on write paths that create
+or set config keys: add_section(), set(), set_value(), add_value(), and
+rename_section() destinations. This matches Git config key validation behavior;
+Git source commit 94f057755b7941b321fd11fec1b2e3ca5313a4e0 reports invalid keys
+containing newlines from config.c, and local git 2.50.1 rejects newline-bearing
+config keys.
+
+Add a regression test covering unsafe section and option names while preserving
+safe writes.
+
+CVE: CVE-2026-67326
+Upstream-Status: Backport [https://github.com/gitpython-developers/GitPython/commit/54538428f79b0c91ba52cda5229856a6edf7ac06]
+
+Backport Changes:
+- Omitted test/test_config.py because the current PyPI source
+  archive does not include the test suite and the python3-git
+  recipe does not run it.
+
+Co-authored-by: Sebastian Thiel <sebastian.thiel@icloud.com>
+(cherry picked from commit 54538428f79b0c91ba52cda5229856a6edf7ac06)
+Signed-off-by: Yogita Urade <yurade@cisco.com>
+---
+ git/config.py | 17 ++++++++++++++++-
+ 1 file changed, 16 insertions(+), 1 deletion(-)
+
+diff --git a/git/config.py b/git/config.py
+index 1595d51f..236de3a6 100644
+--- a/git/config.py
++++ b/git/config.py
+@@ -71,6 +71,9 @@ class MetaParserBuilder:
+ 
+ See: https://git-scm.com/docs/git-config#_conditional_includes
+ """
++UNSAFE_CONFIG_CHARS_RE = re.compile(r"[\r\n\x00]")
++"""Characters that cannot be safely written in config names or values."""
++
+ 
+ 
+ class MetaParserBuilder(abc.ABCMeta):  # noqa: B024
+@@ -759,6 +762,7 @@ GitConfigParser.add_section
+ 
+     def add_section(self, section: str) -> None:
+         """Assures added options will stay in order."""
++        self._assure_config_name_safe(section, "section")
+         return super().add_section(section)
+ 
+     @property
+@@ -865,9 +869,13 @@ GitConfigParser._value_to_string_safe
+ 
+     def _value_to_string_safe(self, value: Union[str, bytes, int, float, bool]) -> str:
+         value_str = self._value_to_string(value)
+-        if re.search(r"[\r\n\x00]", value_str):
++        if UNSAFE_CONFIG_CHARS_RE.search(value_str):
+             raise ValueError("Git config values must not contain CR, LF, or NUL")
+         return value_str
++    def _assure_config_name_safe(self, name: "cp._SectionName", label: str) -> None:
++        if isinstance(name, str) and UNSAFE_CONFIG_CHARS_RE.search(name):
++            raise ValueError("Git config %s names must not contain CR, LF, or NUL" % label)
++
+ 
+     @needs_values
+     @set_dirty_and_flush_changes
+@@ -877,6 +885,8 @@ GitConfigParser.set
+         option: str,
+         value: Union[str, bytes, int, float, bool, None] = None,
+     ) -> None:
++        self._assure_config_name_safe(section, "section")
++        self._assure_config_name_safe(option, "option")
+         if value is not None:
+             value = self._value_to_string_safe(value)
+         return super().set(section, option, value)
+@@ -901,6 +911,8 @@ GitConfigParser.set_value
+         :return:
+             This instance
+         """
++        self._assure_config_name_safe(section, "section")
++        self._assure_config_name_safe(option, "option")
+         value_str = self._value_to_string_safe(value)
+         if not self.has_section(section):
+             self.add_section(section)
+@@ -929,6 +941,8 @@ GitConfigParser.add_value
+         :return:
+             This instance
+         """
++        self._assure_config_name_safe(section, "section")
++        self._assure_config_name_safe(option, "option")
+         value_str = self._value_to_string_safe(value)
+         if not self.has_section(section):
+             self.add_section(section)
+@@ -949,6 +963,7 @@ GitConfigParser.rename_section
+         """
+         if not self.has_section(section):
+             raise ValueError("Source section '%s' doesn't exist" % section)
++        self._assure_config_name_safe(new_name, "section")
+         if self.has_section(new_name):
+             raise ValueError("Destination section '%s' already exists" % new_name)
+ 
diff --git a/meta/recipes-devtools/python/python3-git_3.1.43.bb b/meta/recipes-devtools/python/python3-git_3.1.43.bb
index ebb5e4b442..474206d4ed 100644
--- a/meta/recipes-devtools/python/python3-git_3.1.43.bb
+++ b/meta/recipes-devtools/python/python3-git_3.1.43.bb
@@ -21,6 +21,7 @@ SRC_URI += "file://CVE-2026-42284.patch \
            file://CVE-2026-44243_p2.patch \
            file://CVE-2026-44244_p1.patch \
            file://CVE-2026-44244_p2.patch \
+           file://CVE-2026-67326.patch \
            "
 SRC_URI[sha256sum] = "35f314a9f878467f5453cc1fee295c3e18e52f1b99f10f6cf5b1682e968a9e7c"
 
-- 
2.53.0