- Add CVE-2022-42919-loc-priv-mulitproc-forksrv.patch to avoid

CVE-2022-42919 (bsc#1204886) avoiding Linux specific local
  privilege escalation via the multiprocessing forkserver start
  method.

OBS-URL: https://build.opensuse.org/package/show/devel:languages:python:Factory/python311?expand=0&rev=36

CVE-2022-42919-loc-priv-mulitproc-forksrv.patch

@@ -0,0 +1,59 @@
+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 ---
+ Misc/NEWS.d/next/Security/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
+
+--- 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-' %
+--- /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>`_.

python311.changes

@@ -1,3 +1,11 @@
+-------------------------------------------------------------------
+Fri Nov  4 14:59:53 UTC 2022 - Matej Cepl <mcepl@suse.com>
+
+- Add CVE-2022-42919-loc-priv-mulitproc-forksrv.patch to avoid
+  CVE-2022-42919 (bsc#1204886) avoiding Linux specific local
+  privilege escalation via the multiprocessing forkserver start
+  method.
+
 -------------------------------------------------------------------
 Tue Oct 25 08:39:47 UTC 2022 - Matej Cepl <mcepl@suse.com>
 

python311.spec

@@ -169,6 +169,9 @@ Patch36:        support-expat-CVE-2022-25236-patched.patch
 # PATCH-FIX-UPSTREAM 98437-sphinx.locale._-as-gettext-in-pyspecific.patch gh#python/cpython#98366 mcepl@suse.com
 # this patch makes things totally awesome
 Patch37:        98437-sphinx.locale._-as-gettext-in-pyspecific.patch
+# PATCH-FIX-UPSTREAM CVE-2022-42919-loc-priv-mulitproc-forksrv.patch bsc#1204886 mcepl@suse.com
+# Avoid Linux specific local privilege escalation via the multiprocessing forkserver start method
+Patch38:        CVE-2022-42919-loc-priv-mulitproc-forksrv.patch
 BuildRequires:  autoconf-archive
 BuildRequires:  automake
 BuildRequires:  fdupes
@@ -436,6 +439,7 @@ other applications.
 %patch35 -p1
 %patch36 -p1
 %patch37 -p1
+%patch38 -p1
 
 # drop Autoconf version requirement
 sed -i 's/^AC_PREREQ/dnl AC_PREREQ/' configure.ac