[OE-core][wrynose][v2 PATCH 23/27] python3-git: fix CVE-2026-78675

[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/ef7568e3b317ce617eacda39b8b54dcdff8c3b5c
[2] https://security-tracker.debian.org/tracker/CVE-2026-78675

Signed-off-by: Yogita Urade <yurade@cisco.com>
---
Changes in v2:
- Changed the advisory reference from NVD to Debian Security Tracker.
---
 .../python/python3-git/CVE-2026-78675.patch   | 47 +++++++++++++++++++
 .../python/python3-git_3.1.43.bb              |  1 +
 2 files changed, 48 insertions(+)
 create mode 100644 meta/recipes-devtools/python/python3-git/CVE-2026-78675.patch

diff --git a/meta/recipes-devtools/python/python3-git/CVE-2026-78675.patch b/meta/recipes-devtools/python/python3-git/CVE-2026-78675.patch
new file mode 100644
index 0000000000..0cef9a19b0
--- /dev/null
+++ b/meta/recipes-devtools/python/python3-git/CVE-2026-78675.patch
@@ -0,0 +1,47 @@
+From eaa63265a59f069bf13384481c48fa48a25ff087 Mon Sep 17 00:00:00 2001
+From: Byron <sebastian.thiel@icloud.com>
+Date: Mon, 10 Aug 2026 12:32:24 +0200
+Subject: [PATCH] fix: ignore includes in submodule configuration
+
+<!-- agent -->
+Submodule configuration is read from .gitmodules, whose contents may come
+from an untrusted repository. Its parser inherited merge_includes=True and
+could therefore open files named by include directives during ordinary
+submodule enumeration.
+
+Disable include merging at the SubmoduleConfigParser construction site. This
+matches Repo.config_writer() hardening from 41ecc6a4 and addresses
+GHSA-7833-fr7j-v32q without changing include behavior for trusted config
+parsers.
+
+The regression points .gitmodules at a non-config file and verifies the
+submodule entry remains readable without opening the included path.
+
+CVE: CVE-2026-78675
+Upstream-Status: Backport [https://github.com/gitpython-developers/GitPython/commit/ef7568e3b317ce617eacda39b8b54dcdff8c3b5c]
+
+Backport Changes:
+- Omitted test/test_submodule.py because the current PyPI source archive
+  does not include the test suite and the python3-git recipe does not run it.
+
+Assisted-by: GPT 5.6
+Co-authored-by: GPT 5.6 <codex@openai.com>
+(cherry picked from commit ef7568e3b317ce617eacda39b8b54dcdff8c3b5c)
+Signed-off-by: Yogita Urade <yurade@cisco.com>
+---
+ git/objects/submodule/base.py | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/git/objects/submodule/base.py b/git/objects/submodule/base.py
+index 410f41e2..e37f8fa9 100644
+--- a/git/objects/submodule/base.py
++++ b/git/objects/submodule/base.py
+@@ -268,7 +268,7 @@ class Submodule(IndexObject, TraversableIterableObj):
+             raise ValueError("Cannot write blobs of 'historical' submodule configurations")
+         # END handle writes of historical submodules
+
+-        return SubmoduleConfigParser(fp_module, read_only=read_only)
++        return SubmoduleConfigParser(fp_module, read_only=read_only, merge_includes=False)
+
+     def _clear_cache(self) -> None:
+         """Clear the possibly changed values."""
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 badbf04415..0dd42e1f04 100644
--- a/meta/recipes-devtools/python/python3-git_3.1.43.bb
+++ b/meta/recipes-devtools/python/python3-git_3.1.43.bb
@@ -47,6 +47,7 @@ SRC_URI += "file://CVE-2026-42284.patch \
            file://CVE-2026-78678_CVE-2026-78679.patch \
            file://CVE-2026-78677.patch \
            file://CVE-2026-78676.patch \
+           file://CVE-2026-78675.patch \
            "
 SRC_URI[sha256sum] = "35f314a9f878467f5453cc1fee295c3e18e52f1b99f10f6cf5b1682e968a9e7c"
 
-- 
2.53.0