From: Hetvi Thakar <[email protected]> This patch backports the upstream fix for CVE-2026-8643. The commit is included in pip 26.1.2 and referenced in [1]. The public CVE advisory is referenced in [2].
The selected commit is self-contained. Later upstream commits refactor the validation to use a shared containment helper and update release notes; they are not prerequisites for this fix. [1] https://github.com/pypa/pip/commit/8eb178480bd1a2b223f509fc430796b265158dfb [2] https://github.com/advisories/GHSA-wf93-45jw-7689 Signed-off-by: Hetvi Thakar <[email protected]> --- .../python/python3-pip/CVE-2026-8643.patch | 80 +++++++++++++++++++ .../python/python3-pip_26.0.1.bb | 4 +- 2 files changed, 83 insertions(+), 1 deletion(-) create mode 100644 meta/recipes-devtools/python/python3-pip/CVE-2026-8643.patch diff --git a/meta/recipes-devtools/python/python3-pip/CVE-2026-8643.patch b/meta/recipes-devtools/python/python3-pip/CVE-2026-8643.patch new file mode 100644 index 0000000000..2f38ad0207 --- /dev/null +++ b/meta/recipes-devtools/python/python3-pip/CVE-2026-8643.patch @@ -0,0 +1,80 @@ +From 483d83c13c9d69c1916c06cab29991f6c2725cee Mon Sep 17 00:00:00 2001 +From: Damian Shaw <[email protected]> +Date: Wed, 20 May 2026 15:20:25 -0400 +Subject: [PATCH] Reject entry point names that escape scripts dir (#14000) + +* Reject entry point names that escape scripts dir + +* NEWS ENTRY + +CVE: CVE-2026-8643 +Upstream-Status: Backport [https://github.com/pypa/pip/commit/8eb178480bd1a2b223f509fc430796b265158dfb] + +Backport Changes: +- Omitted tests/unit/test_wheel.py because the pip 26.0.1 PyPI sdist + does not ship the upstream test suite and the OE recipe does not + enable ptest. + +(cherry picked from commit 8eb178480bd1a2b223f509fc430796b265158dfb) +Signed-off-by: Hetvi Thakar <[email protected]> +--- + news/14000.bugfix.rst | 2 ++ + src/pip/_internal/operations/install/wheel.py | 26 ++++++++++++++++--- + 2 files changed, 25 insertions(+), 3 deletions(-) + create mode 100644 news/14000.bugfix.rst + +diff --git a/news/14000.bugfix.rst b/news/14000.bugfix.rst +new file mode 100644 +index 000000000..3b86f1b3b +--- /dev/null ++++ b/news/14000.bugfix.rst +@@ -0,0 +1,2 @@ ++Reject ``console_scripts`` and ``gui_scripts`` entry points whose name would ++install a script outside the scripts directory. +diff --git a/src/pip/_internal/operations/install/wheel.py b/src/pip/_internal/operations/install/wheel.py +index 40097d6a7..231e40065 100644 +--- a/src/pip/_internal/operations/install/wheel.py ++++ b/src/pip/_internal/operations/install/wheel.py +@@ -397,11 +397,31 @@ class MissingCallableSuffix(InstallationError): + ) + + +-def _raise_for_invalid_entrypoint(specification: str) -> None: ++def _script_within_dir(name: str, scripts_dir: str) -> bool: ++ """Return whether script ``name`` resolves to a path inside the ``scripts_dir``. ++ ++ distlib joins the entry point name onto the scripts directory, so a name ++ with path separators or ``..`` components can resolve elsewhere. ++ """ ++ root = os.path.normpath(scripts_dir) ++ dest = os.path.normpath(os.path.join(scripts_dir, name)) ++ return dest.startswith(root + os.sep) ++ ++ ++def _raise_for_invalid_entrypoint(specification: str, scripts_dir: str) -> None: + entry = get_export_entry(specification) +- if entry is not None and entry.suffix is None: ++ if entry is None: ++ return ++ ++ if entry.suffix is None: + raise MissingCallableSuffix(str(entry)) + ++ if not _script_within_dir(entry.name, scripts_dir): ++ raise InstallationError( ++ f"Invalid script entry point name {entry.name!r}: the script " ++ f"would be installed outside the scripts directory ({scripts_dir})." ++ ) ++ + + class PipScriptMaker(ScriptMaker): + # Override distlib's default script template with one that +@@ -419,7 +439,7 @@ class PipScriptMaker(ScriptMaker): + def make( + self, specification: str, options: dict[str, Any] | None = None + ) -> list[str]: +- _raise_for_invalid_entrypoint(specification) ++ _raise_for_invalid_entrypoint(specification, self.target_dir) + return super().make(specification, options) + + diff --git a/meta/recipes-devtools/python/python3-pip_26.0.1.bb b/meta/recipes-devtools/python/python3-pip_26.0.1.bb index 28af8f7ec7..3bea989958 100644 --- a/meta/recipes-devtools/python/python3-pip_26.0.1.bb +++ b/meta/recipes-devtools/python/python3-pip_26.0.1.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-2026-8643.patch \ + " SRC_URI[sha256sum] = "c4037d8a277c89b320abe636d59f91e6d0922d08a05b60e85e53b296613346d8" -- 2.35.6
-=-=-=-=-=-=-=-=-=-=-=- Links: You receive all messages sent to this group. View/Reply Online (#243585): https://lists.openembedded.org/g/openembedded-core/message/243585 Mute This Topic: https://lists.openembedded.org/mt/120786097/21656 Group Owner: [email protected] Unsubscribe: https://lists.openembedded.org/g/openembedded-core/unsub [[email protected]] -=-=-=-=-=-=-=-=-=-=-=-
