Re: [Buildroot] [2025.02.x, PATCH 2/2] package/python-wheel: patch CVE-2026-24049

[Thomas Perale via buildroot <buildroot@buildroot.org>]

In reply of:
> Fixes the following vulnerability:
> 
> - CVE-2026-24049:
>     wheel is a command line tool for manipulating Python wheel files, as
>     defined in PEP 427. In versions 0.40.0 through 0.46.1, the unpack
>     function is vulnerable to file permission modification through
>     mishandling of file permissions after extraction. The logic blindly
>     trusts the filename from the archive header for the chmod operation,
>     even though the extraction process itself might have sanitized the
>     path. Attackers can craft a malicious wheel file that, when unpacked,
>     changes the permissions of critical system files (e.g., /etc/passwd,
>     SSH keys, config files), allowing for Privilege Escalation or
>     arbitrary code execution by modifying now-writable scripts. This issue
>     has been fixed in version 0.46.2.
> 
> For more information, see:
>   - https://www.cve.org/CVERecord?id=CVE-2026-24049
>   - https://github.com/advisories/GHSA-8rrh-rw8j-w5fx
> 
> Signed-off-by: Thomas Perale <thomas.perale@mind.be>

Applied to 2025.02.x. Thanks

> ---
>  ...d-security-issue-around-wheel-unpack.patch | 35 +++++++++++++++++++
>  package/python-wheel/python-wheel.mk          |  3 ++
>  2 files changed, 38 insertions(+)
>  create mode 100644 package/python-wheel/0001-fixed-security-issue-around-wheel-unpack.patch
> 
> diff --git a/package/python-wheel/0001-fixed-security-issue-around-wheel-unpack.patch b/package/python-wheel/0001-fixed-security-issue-around-wheel-unpack.patch
> new file mode 100644
> index 0000000000..8640dfa291
> --- /dev/null
> +++ b/package/python-wheel/0001-fixed-security-issue-around-wheel-unpack.patch
> @@ -0,0 +1,35 @@
> +From 7a7d2de96b22a9adf9208afcc9547e1001569fef 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.
> +
> +CVE: CVE-2026-24049
> +Upstream: https://github.com/pypa/wheel/commit/7a7d2de96b22a9adf9208afcc9547e1001569fef.patch
> +[thomas: change filename, remove tests]
> +Signed-off-by: Thomas Perale <thomas.perale@mind.be>
> +---
> + src/wheel/cli/unpack.py |  4 ++--
> + 3 files changed, 27 insertions(+), 2 deletions(-)
> +
> +diff --git a/src/wheel/cli/unpack.py b/src/wheel/cli/unpack.py
> +index d48840e6e..83dc7423f 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/package/python-wheel/python-wheel.mk b/package/python-wheel/python-wheel.mk
> index 417db7c167..ae02d21feb 100644
> --- a/package/python-wheel/python-wheel.mk
> +++ b/package/python-wheel/python-wheel.mk
> @@ -13,4 +13,7 @@ PYTHON_WHEEL_LICENSE_FILES = LICENSE.txt
>  PYTHON_WHEEL_CPE_ID_VENDOR = wheel_project
>  PYTHON_WHEEL_CPE_ID_PRODUCT = wheel
>  
> +# 0001-fixed-security-issue-around-wheel-unpack.patch
> +PYTHON_WHEEL_IGNORE_CVES += CVE-2026-24049
> +
>  $(eval $(host-python-package))
> -- 
> 2.53.0
> 
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