This bug was fixed in the package python-apt - 2.0.0ubuntu0.20.04.3
---------------
python-apt (2.0.0ubuntu0.20.04.3) focal-security; urgency=medium
* REGRESSION UPDATE: Passing a file descriptor to apt_inst.ArFile or
apt_inst.DebFile caused a segmentation fault (LP: #1907676)
- python/arfile.cc: Fix segmentation fault when opening fd, track
lifetime correctly
-- Marc Deslauriers <marc.deslauri...@ubuntu.com> Thu, 10 Dec 2020
09:46:50 -0500
** Changed in: python-apt (Ubuntu Focal)
Status: New => Fix Released
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https://bugs.launchpad.net/bugs/1907676
Title:
segmentation fault when opening fd
Status in python-apt package in Ubuntu:
Fix Released
Status in python-apt source package in Xenial:
Fix Released
Status in python-apt source package in Bionic:
Fix Released
Status in python-apt source package in Focal:
Fix Released
Status in python-apt source package in Groovy:
Fix Released
Status in python-apt package in Debian:
Unknown
Bug description:
[Impact]
USN-4668-1 introduced a regression in python-apt when using certain
APIs with a file handle.
[Test case]
# Landscape scenario:
1) On the Landscape server, create a package profile that installs a single
package, 'hello' is enough.
2) On the Landscape server, apply the package profile to a client
3) On the Landscape client, verify that there is no segfault message on
'/var/log/kern.log'
4) On the Landscape server, verify that the activity to apply the package
profile ends with success.
Step 3) would show a segfault and step 4), the activity would stay 'In
Progress' forever.
# dak scenario:
dak crashes with a segmentation fault in python3-apt when processing
uploads or processing the NEW queue on ftp-master; and also on my
playground server (used to generate the backtrace).
[Where problems could occurs]
[Other info]
See Debian bug:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=977000
Fix:
https://salsa.debian.org/apt-team/python-apt/-/commit/3d9af5f196ad6a6c6973ac699a15888d21a9bb52
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