microsoft · azurelinux-security · Apr 2, 2026
@@ -0,0 +1,69 @@
+From 5d21b0f9ba9d397f45bb9003635be81df846f894 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Alex=20Gr=C3=B6nholm?= <alex.gronholm@nextday.fi>
+Date: Thu, 22 Jan 2026 01:41:14 +0200
+Subject: [PATCH] Fixed security issue around wheel unpack (#675)
+
+A maliciously crafted wheel could cause the permissions of a file outside the unpack tree to be altered.
+
+Fixes CVE-2026-24049.
+
+Signed-off-by: Azure Linux Security Servicing Account <azurelinux-security@microsoft.com>
+Upstream-reference: https://github.com/pypa/wheel/commit/7a7d2de96b22a9adf9208afcc9547e1001569fef.patch
+---
+ src/wheel/cli/unpack.py  |  4 ++--
+ tests/cli/test_unpack.py | 23 +++++++++++++++++++++++
+ 2 files changed, 25 insertions(+), 2 deletions(-)
+
+diff --git a/src/wheel/cli/unpack.py b/src/wheel/cli/unpack.py
+index d48840e..83dc742 100644
+--- a/src/wheel/cli/unpack.py
++++ b/src/wheel/cli/unpack.py
+@@ -19,12 +19,12 @@ def unpack(path: str, dest: str = ".") -> None:
+         destination = Path(dest) / namever
+         print(f"Unpacking to: {destination}...", end="", flush=True)
+         for zinfo in wf.filelist:
+-            wf.extract(zinfo, destination)
++            target_path = Path(wf.extract(zinfo, destination))
+
+             # Set permissions to the same values as they were set in the archive
+             # We have to do this manually due to
+             # https://github.com/python/cpython/issues/59999
+             permissions = zinfo.external_attr >> 16 & 0o777
+-            destination.joinpath(zinfo.filename).chmod(permissions)
++            target_path.chmod(permissions)
+
+     print("OK")
+diff --git a/tests/cli/test_unpack.py b/tests/cli/test_unpack.py
+index ae584af..75fe193 100644
+--- a/tests/cli/test_unpack.py
++++ b/tests/cli/test_unpack.py
+@@ -34,3 +34,26 @@ def test_unpack_executable_bit(tmp_path):
+     unpack(str(wheel_path), str(tmp_path))
+     assert not script_path.is_dir()
+     assert stat.S_IMODE(script_path.stat().st_mode) == 0o755
++
++
++@pytest.mark.skipif(
++    platform.system() == "Windows", reason="Windows does not support chmod()"
++)
++def test_chmod_outside_unpack_tree(tmp_path_factory: TempPathFactory) -> None:
++    wheel_path = tmp_path_factory.mktemp("build") / "test-1.0-py3-none-any.whl"
++    with WheelFile(wheel_path, "w") as wf:
++        wf.writestr(
++            "test-1.0.dist-info/METADATA",
++            "Metadata-Version: 2.4\nName: test\nVersion: 1.0\n",
++        )
++        wf.writestr("../../system-file", b"malicious data")
++
++    extract_root_path = tmp_path_factory.mktemp("extract")
++    system_file = extract_root_path / "system-file"
++    extract_path = extract_root_path / "subdir"
++    system_file.write_bytes(b"important data")
++    system_file.chmod(0o755)
++    run_command("unpack", "--dest", extract_path, wheel_path)
++
++    assert system_file.read_bytes() == b"important data"
++    assert stat.S_IMODE(system_file.stat().st_mode) == 0o755
+-- 
+2.45.4
+
@@ -4,12 +4,13 @@
 Summary:        Built-package format for Python
 Name:           python-%{pypi_name}
 Version:        0.43.0
-Release:        1%{?dist}
+Release:        2%{?dist}
 License:        MIT
 Vendor:         Microsoft Corporation
 Distribution:   Azure Linux
 URL:            https://github.com/pypa/wheel
 Source0:        %{url}/archive/%{version}/%{pypi_name}-%{version}.tar.gz
+Patch0:         CVE-2026-24049.patch
 %global pypi_name wheel
 %global python_wheel_name %{pypi_name}-%{version}-py3-none-any.whl
 %global python_wheeldir %{_datadir}/python-wheels
@@ -115,6 +116,9 @@ pip3 install iniconfig
 %endif
 
 %changelog
+* Thu Apr 02 2026 Azure Linux Security Servicing Account <azurelinux-security@microsoft.com> - 0.43.0-2
+- Patch for CVE-2026-24049
+
 * Fri May 10 2024 Betty Lakes <bettylakes@microsoft.com> - 0.43.0-1
 - Updated to 0.43.0
 

@@ -530,7 +530,7 @@ procps-ng-lang-4.0.4-1.azl3.aarch64.rpm
 pyproject-rpm-macros-1.12.0-2.azl3.noarch.rpm
 pyproject-srpm-macros-1.12.0-2.azl3.noarch.rpm
 python-markupsafe-debuginfo-2.1.3-1.azl3.aarch64.rpm
-python-wheel-wheel-0.43.0-1.azl3.noarch.rpm
+python-wheel-wheel-0.43.0-2.azl3.noarch.rpm
 python3-3.12.9-10.azl3.aarch64.rpm
 python3-audit-3.1.2-1.azl3.aarch64.rpm
 python3-cracklib-2.9.11-1.azl3.aarch64.rpm
@@ -557,7 +557,7 @@ python3-rpm-generators-14-11.azl3.noarch.rpm
 python3-setuptools-69.0.3-5.azl3.noarch.rpm
 python3-test-3.12.9-10.azl3.aarch64.rpm
 python3-tools-3.12.9-10.azl3.aarch64.rpm
-python3-wheel-0.43.0-1.azl3.noarch.rpm
+python3-wheel-0.43.0-2.azl3.noarch.rpm
 readline-8.2-2.azl3.aarch64.rpm
 readline-debuginfo-8.2-2.azl3.aarch64.rpm
 readline-devel-8.2-2.azl3.aarch64.rpm

@@ -538,7 +538,7 @@ procps-ng-lang-4.0.4-1.azl3.x86_64.rpm
 pyproject-rpm-macros-1.12.0-2.azl3.noarch.rpm
 pyproject-srpm-macros-1.12.0-2.azl3.noarch.rpm
 python-markupsafe-debuginfo-2.1.3-1.azl3.x86_64.rpm
-python-wheel-wheel-0.43.0-1.azl3.noarch.rpm
+python-wheel-wheel-0.43.0-2.azl3.noarch.rpm
 python3-3.12.9-10.azl3.x86_64.rpm
 python3-audit-3.1.2-1.azl3.x86_64.rpm
 python3-cracklib-2.9.11-1.azl3.x86_64.rpm
@@ -565,7 +565,7 @@ python3-rpm-generators-14-11.azl3.noarch.rpm
 python3-setuptools-69.0.3-5.azl3.noarch.rpm
 python3-test-3.12.9-10.azl3.x86_64.rpm
 python3-tools-3.12.9-10.azl3.x86_64.rpm
-python3-wheel-0.43.0-1.azl3.noarch.rpm
+python3-wheel-0.43.0-2.azl3.noarch.rpm
 readline-8.2-2.azl3.x86_64.rpm
 readline-debuginfo-8.2-2.azl3.x86_64.rpm
 readline-devel-8.2-2.azl3.x86_64.rpm