python3-waitress: patch CVE-2024-49769

Details: https://nvd.nist.gov/vuln/detail/CVE-2024-49769

Pick the patch that is referenced in the NVD report (which is
a merge commit. The patches here are the individual patches from
that merge).

Signed-off-by: Gyorgy Sarvari <skandigraun@gmail.com>

meta-python/recipes-devtools/python/python3-waitress/CVE-2024-49769-2.patch

@@ -0,0 +1,53 @@
+From 646d7bfa81185b961b4797965f5c7ff0e380bc5c Mon Sep 17 00:00:00 2001
+From: Delta Regeer <bertjw@regeer.org>
+Date: Sun, 3 Mar 2024 16:16:48 -0700
+Subject: [PATCH] Assume socket is not connected when passed to
+ wasyncore.dispatcher
+
+No longer call getpeername() on the remote socket either, as it is not
+necessary for any of the places where waitress requires that self.addr
+in a subclass of the dispatcher needs it.
+
+This removes a race condition when setting up a HTTPChannel where we
+accepted the socket, and know the remote address, yet call getpeername()
+again which would have the unintended side effect of potentially setting
+self.connected to False because the remote has already shut down part of
+the socket.
+
+This issue was uncovered in #418, where the server would go into a hard
+loop because self.connected was used in various parts of the code base.
+
+CVE: CVE-2024-49769
+Upstream-Status: Backport [https://github.com/Pylons/waitress/commit/840aebce1c4c1bfd9036f402c1f5d5a4d2f4a1c2]
+Signed-off-by: Gyorgy Sarvari <skandigraun@gmail.com>
+---
+ src/waitress/wasyncore.py | 16 ----------------
+ 1 file changed, 16 deletions(-)
+
+diff --git a/src/waitress/wasyncore.py b/src/waitress/wasyncore.py
+index b3459e0..b5ddce2 100644
+--- a/src/waitress/wasyncore.py
++++ b/src/waitress/wasyncore.py
+@@ -298,22 +298,6 @@ class dispatcher:
+             # get a socket from a blocking source.
+             sock.setblocking(0)
+             self.set_socket(sock, map)
+-            self.connected = True
+-            # The constructor no longer requires that the socket
+-            # passed be connected.
+-            try:
+-                self.addr = sock.getpeername()
+-            except OSError as err:
+-                if err.args[0] in (ENOTCONN, EINVAL):
+-                    # To handle the case where we got an unconnected
+-                    # socket.
+-                    self.connected = False
+-                else:
+-                    # The socket is broken in some unknown way, alert
+-                    # the user and remove it from the map (to prevent
+-                    # polling of broken sockets).
+-                    self.del_channel(map)
+-                    raise
+         else:
+             self.socket = None
+