import python39-3.9.13-2.module+el8.7.0+17195+44752b34

SOURCES/00391-cve-2022-42919.patch

@@ -0,0 +1,64 @@
+From 85178d5849a4d9b5b46e7b91b1ebad7425139b44 Mon Sep 17 00:00:00 2001
+From: "Gregory P. Smith" <greg@krypto.org>
+Date: Thu, 20 Oct 2022 15:30:09 -0700
+Subject: [PATCH] gh-97514: Don't use Linux abstract sockets for
+ multiprocessing (GH-98501)
+
+Linux abstract sockets are insecure as they lack any form of filesystem
+permissions so their use allows anyone on the system to inject code into
+the process.
+
+This removes the default preference for abstract sockets in
+multiprocessing introduced in Python 3.9+ via
+https://github.com/python/cpython/pull/18866 while fixing
+https://github.com/python/cpython/issues/84031.
+
+Explicit use of an abstract socket by a user now generates a
+RuntimeWarning.  If we choose to keep this warning, it should be
+backported to the 3.7 and 3.8 branches.
+(cherry picked from commit 49f61068f49747164988ffc5a442d2a63874fc17)
+
+Co-authored-by: Gregory P. Smith <greg@krypto.org>
+---
+ Lib/multiprocessing/connection.py                 |  5 -----
+ .../2022-09-07-10-42-00.gh-issue-97514.Yggdsl.rst | 15 +++++++++++++++
+ 2 files changed, 15 insertions(+), 5 deletions(-)
+ create mode 100644 Misc/NEWS.d/next/Security/2022-09-07-10-42-00.gh-issue-97514.Yggdsl.rst
+
+diff --git a/Lib/multiprocessing/connection.py b/Lib/multiprocessing/connection.py
+index 510e4b5aba44..8e2facf92a94 100644
+--- a/Lib/multiprocessing/connection.py
++++ b/Lib/multiprocessing/connection.py
+@@ -73,11 +73,6 @@ def arbitrary_address(family):
+     if family == 'AF_INET':
+         return ('localhost', 0)
+     elif family == 'AF_UNIX':
+-        # Prefer abstract sockets if possible to avoid problems with the address
+-        # size.  When coding portable applications, some implementations have
+-        # sun_path as short as 92 bytes in the sockaddr_un struct.
+-        if util.abstract_sockets_supported:
+-            return f"\0listener-{os.getpid()}-{next(_mmap_counter)}"
+         return tempfile.mktemp(prefix='listener-', dir=util.get_temp_dir())
+     elif family == 'AF_PIPE':
+         return tempfile.mktemp(prefix=r'\\.\pipe\pyc-%d-%d-' %
+diff --git a/Misc/NEWS.d/next/Security/2022-09-07-10-42-00.gh-issue-97514.Yggdsl.rst b/Misc/NEWS.d/next/Security/2022-09-07-10-42-00.gh-issue-97514.Yggdsl.rst
+new file mode 100644
+index 000000000000..02d95b570520
+--- /dev/null
++++ b/Misc/NEWS.d/next/Security/2022-09-07-10-42-00.gh-issue-97514.Yggdsl.rst
+@@ -0,0 +1,15 @@
++On Linux the :mod:`multiprocessing` module returns to using filesystem backed
++unix domain sockets for communication with the *forkserver* process instead of
++the Linux abstract socket namespace.  Only code that chooses to use the
++:ref:`"forkserver" start method <multiprocessing-start-methods>` is affected.
++
++Abstract sockets have no permissions and could allow any user on the system in
++the same `network namespace
++<https://man7.org/linux/man-pages/man7/network_namespaces.7.html>`_ (often the
++whole system) to inject code into the multiprocessing *forkserver* process.
++This was a potential privilege escalation. Filesystem based socket permissions
++restrict this to the *forkserver* process user as was the default in Python 3.8
++and earlier.
++
++This prevents Linux `CVE-2022-42919
++<https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-42919>`_.

SPECS/python39.spec

@@ -17,7 +17,7 @@ URL: https://www.python.org/
 #global prerel ...
 %global upstream_version %{general_version}%{?prerel}
 Version: %{general_version}%{?prerel:~%{prerel}}
-Release: 1%{?dist}
+Release: 2%{?dist}
 License: Python
 
 # Exclude i686 arch. Due to a modularity issue it's being added to the
@@ -425,6 +425,16 @@ Patch378: 00378-support-expat-2-4-5.patch
 # Tracker bug: https://bugzilla.redhat.com/show_bug.cgi?id=2075390
 Patch382: 00382-cve-2015-20107.patch
 
+# 00391 #
+# CVE-2022-42919
+#
+# Local privilege escalation via the multiprocessing forkserver start method.
+#
+# Upstream: https://github.com/python/cpython/issues/97514
+#
+# Tracker bug: https://bugzilla.redhat.com/show_bug.cgi?id=2138705
+Patch391: 00391-cve-2022-42919.patch
+
 # (New patches go here ^^^)
 #
 # When adding new patches to "python" and "python3" in Fedora, EL, etc.,
@@ -837,6 +847,7 @@ rm Lib/ensurepip/_bundled/*.whl
 %apply_patch -q %{PATCH353}
 %apply_patch -q %{PATCH378}
 %apply_patch -q %{PATCH382}
+%apply_patch -q %{PATCH391}
 
 # Remove all exe files to ensure we are not shipping prebuilt binaries
 # note that those are only used to create Microsoft Windows installers
@@ -2003,6 +2014,10 @@ fi
 # ======================================================
 
 %changelog
+* Mon Nov 07 2022 Lumír Balhar <lbalhar@redhat.com> - 3.9.13-2
+- Fix for CVE-2022-42919
+Resolves: rhbz#2138705
+
 * Tue Jun 14 2022 Charalampos Stratakis <cstratak@redhat.com> - 3.9.13-1
 - Update to 3.9.13
 - Security fix for CVE-2015-20107