[OE-core][master][PATCH] python3-pip: Backport fix CVE-2026-1703

["Adarsh Jagadish Kamini" <adarsh.jagadish.kamini@est.tech>]

From: Adarsh Jagadish Kamini <adarsh.jagadish.kamini@est.tech>

Include the patch linked in the NVD report: https://github.com/pypa/pip/commit/8e227a9be4faa9594e05d02ca05a413a2a4e7735

Signed-off-by: Adarsh Jagadish Kamini <adarsh.jagadish.kamini@est.tech>
---
 .../python/python3-pip/CVE-2026-1703.patch    | 55 +++++++++++++++++++
 .../python/python3-pip_24.0.bb                |  3 +-
 2 files changed, 57 insertions(+), 1 deletion(-)
 create mode 100644 meta/recipes-devtools/python/python3-pip/CVE-2026-1703.patch

diff --git a/meta/recipes-devtools/python/python3-pip/CVE-2026-1703.patch b/meta/recipes-devtools/python/python3-pip/CVE-2026-1703.patch
new file mode 100644
index 0000000000..8d34d2acb4
--- /dev/null
+++ b/meta/recipes-devtools/python/python3-pip/CVE-2026-1703.patch
@@ -0,0 +1,55 @@
+From ed41e052ebe78fcf043c43ea05bf16f73dfbb581 Mon Sep 17 00:00:00 2001
+From: Damian Shaw <damian.peter.shaw@gmail.com>
+Date: Fri, 30 Jan 2026 16:27:57 -0500
+Subject: [PATCH] Merge pull request #13777 from sethmlarson/commonpath
+
+Use os.path.commonpath() instead of commonprefix()
+
+CVE: CVE-2026-1703
+
+Upstream-Status: Backport [https://github.com/pypa/pip/commit/8e227a9be4faa9594e05d02ca05a413a2a4e7735]
+
+Signed-off-by: Adarsh Jagadish Kamini <adarsh.jagadish.kamini@est.tech>
+---
+ news/+1ee322a1.bugfix.rst            | 1 +
+ src/pip/_internal/utils/unpacking.py | 2 +-
+ tests/unit/test_utils_unpacking.py   | 2 ++
+ 3 files changed, 4 insertions(+), 1 deletion(-)
+ create mode 100644 news/+1ee322a1.bugfix.rst
+
+diff --git a/news/+1ee322a1.bugfix.rst b/news/+1ee322a1.bugfix.rst
+new file mode 100644
+index 000000000..edb1b320c
+--- /dev/null
++++ b/news/+1ee322a1.bugfix.rst
+@@ -0,0 +1 @@
++Use a path-segment prefix comparison, not char-by-char.
+diff --git a/src/pip/_internal/utils/unpacking.py b/src/pip/_internal/utils/unpacking.py
+index 78b5c13ce..0b26525fb 100644
+--- a/src/pip/_internal/utils/unpacking.py
++++ b/src/pip/_internal/utils/unpacking.py
+@@ -81,7 +81,7 @@ def is_within_directory(directory: str, target: str) -> bool:
+     abs_directory = os.path.abspath(directory)
+     abs_target = os.path.abspath(target)
+ 
+-    prefix = os.path.commonprefix([abs_directory, abs_target])
++    prefix = os.path.commonpath([abs_directory, abs_target])
+     return prefix == abs_directory
+ 
+ 
+diff --git a/tests/unit/test_utils_unpacking.py b/tests/unit/test_utils_unpacking.py
+index 1f0b59dbd..724ca0be8 100644
+--- a/tests/unit/test_utils_unpacking.py
++++ b/tests/unit/test_utils_unpacking.py
+@@ -202,6 +202,8 @@ def test_unpack_tar_unicode(tmpdir: Path) -> None:
+         (("parent/", "parent/sub"), True),
+         # Test target outside parent
+         (("parent/", "parent/../sub"), False),
++        # Test target sub-string of parent
++        (("parent/child", "parent/childfoo"), False),
+     ],
+ )
+ def test_is_within_directory(args: Tuple[str, str], expected: bool) -> None:
+-- 
+2.44.0
+
diff --git a/meta/recipes-devtools/python/python3-pip_24.0.bb b/meta/recipes-devtools/python/python3-pip_24.0.bb
index be4a29500a..83f8d869ac 100644
--- a/meta/recipes-devtools/python/python3-pip_24.0.bb
+++ b/meta/recipes-devtools/python/python3-pip_24.0.bb
@@ -31,7 +31,8 @@ LIC_FILES_CHKSUM = "file://LICENSE.txt;md5=63ec52baf95163b597008bb46db68030 \
 
 inherit pypi python_setuptools_build_meta
 
-SRC_URI += "file://no_shebang_mangling.patch"
+SRC_URI += "file://no_shebang_mangling.patch \
+            file://CVE-2026-1703.patch \"
 
 SRC_URI[sha256sum] = "ea9bd1a847e8c5774a5777bb398c19e80bcd4e2aa16a4b301b718fe6f593aba2"
 
-- 
2.44.0