[OE-core][master][PATCH v4] python3-pip: Backport fix CVE-2026-1703

[OE-core][master][PATCH v4] python3-pip: Backport fix CVE-2026-1703

[Adarsh Jagadish Kamini]

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_25.3.bb                |  4 +-
 2 files changed, 58 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..fa3ecfd6d0
--- /dev/null
+++ b/meta/recipes-devtools/python/python3-pip/CVE-2026-1703.patch
@@ -0,0 +1,55 @@
+From f3354dbf1fa59895cd06f310064d57b73f05426a 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 v3] 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 bc950ac93..b3f52e85e 100644
+--- a/src/pip/_internal/utils/unpacking.py
++++ b/src/pip/_internal/utils/unpacking.py
+@@ -83,7 +83,7 @@ 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 003cce148..582da9722 100644
+--- a/tests/unit/test_utils_unpacking.py
++++ b/tests/unit/test_utils_unpacking.py
+@@ -412,6 +412,8 @@ 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_25.3.bb b/meta/recipes-devtools/python/python3-pip_25.3.bb
index bbc70e3eae..829a44cc64 100644
--- a/meta/recipes-devtools/python/python3-pip_25.3.bb
+++ b/meta/recipes-devtools/python/python3-pip_25.3.bb
@@ -24,7 +24,9 @@ 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] = "8d0538dbbd7babbd207f261ed969c65de439f6bc9e5dbd3b3b9a77f25d95f343"
 
-- 
2.34.1

Re: [OE-core][master][PATCH v4] python3-pip: Backport fix CVE-2026-1703

[Mathieu Dubois-Briand]

On Fri Feb 13, 2026 at 3:32 PM CET, Adarsh Jagadish Kamini wrote:
> 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>
> ---

Hi Adarsh,

Thanks for your patch. However python3-pip was recently upgraded to
version 26.0 which includes this fix.

Thanks,
Mathieu

-- 
Mathieu Dubois-Briand, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com

Re: [OE-core][master][PATCH v4] python3-pip: Backport fix CVE-2026-1703

[Adarsh Jagadish Kamini]

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Hi,
Alright, I will drop the patch for master, I will check if it is needed for scarthgap.

Thanks!
________________________________
From: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Sent: Tuesday, February 17, 2026 09:51
To: Adarsh Jagadish Kamini <adarsh.jagadish.kamini@est.tech>; openembedded-core@lists.openembedded.org <openembedded-core@lists.openembedded.org>
Subject: Re: [OE-core][master][PATCH v4] python3-pip: Backport fix CVE-2026-1703

On Fri Feb 13, 2026 at 3:32 PM CET, Adarsh Jagadish Kamini wrote:
> 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>
> ---

Hi Adarsh,

Thanks for your patch. However python3-pip was recently upgraded to
version 26.0 which includes this fix.

Thanks,
Mathieu

--
Mathieu Dubois-Briand, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com


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