[Bug 1891552] Re: Segmentation Fault in libpcre2-8-0 when using regex in (cifs) volume
This bug was fixed in the package libpam-mount - 2.16-10ubuntu0.20.10.1 --- libpam-mount (2.16-10ubuntu0.20.10.1) groovy; urgency=medium [ Utkarsh Gupta ] * Fix segmentation fault in libpcre2-8-0 when using regex in (cifs) volume. (LP: #1891552) - d/p/0016-Port-to-pcre2.patch: Fix pcre2 patch. Thanks to Jochen Sprickerhof for the patch. [ Christian Ehrhardt ] * d/t/local-luks: fix autopkgtests. -- Utkarsh Gupta Fri, 26 Mar 2021 20:02:14 +0530 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1891552 Title: Segmentation Fault in libpcre2-8-0 when using regex in (cifs) volume To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libpam-mount/+bug/1891552/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1891552] Re: Segmentation Fault in libpcre2-8-0 when using regex in (cifs) volume
This bug was fixed in the package libpam-mount - 2.16-10ubuntu0.20.04.1 --- libpam-mount (2.16-10ubuntu0.20.04.1) focal; urgency=medium [ Utkarsh Gupta ] * Fix segmentation fault in libpcre2-8-0 when using regex in (cifs) volume. (LP: #1891552) - d/p/0016-Port-to-pcre2.patch: Fix pcre2 patch. Thanks to Jochen Sprickerhof for the patch. [ Christian Ehrhardt ] * d/t/local-luks: fix autopkgtests. -- Utkarsh Gupta Fri, 26 Mar 2021 20:02:14 +0530 ** Changed in: libpam-mount (Ubuntu Focal) Status: Fix Committed => Fix Released ** Changed in: libpam-mount (Ubuntu Groovy) Status: Fix Committed => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1891552 Title: Segmentation Fault in libpcre2-8-0 when using regex in (cifs) volume To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libpam-mount/+bug/1891552/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1891552] Re: Segmentation Fault in libpcre2-8-0 when using regex in (cifs) volume
Oh, thanks! Adjusting the tags and proceeding with the release. ** Tags removed: verification-needed verification-needed-groovy ** Tags added: verification-done verification-done-groovy -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1891552 Title: Segmentation Fault in libpcre2-8-0 when using regex in (cifs) volume To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libpam-mount/+bug/1891552/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1891552] Re: Segmentation Fault in libpcre2-8-0 when using regex in (cifs) volume
Hello Lukasz,
Tested for groovy [libpam-mount:amd64 (2.16-10ubuntu0.20.10.1)]:
# Before applying the patched version
root@temp:~# nano /etc/security/pam_mount.conf.xml
root@temp:~# su - user
Segmentation fault (core dumped)
# Adding the proposed repository
root@temp:~# nano /etc/apt/sources.list
root@temp:~# apt update && apt upgrade
# After applying the patched version
root@temp:~# su - user
(rdconf1.c:618): pcre_exec: /^[a-z]{3}.*$/: 1 matches
Thus, confirmed that update works and indeed fixes the problem. Thanks!
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1891552
Title:
Segmentation Fault in libpcre2-8-0 when using regex in (cifs) volume
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/libpam-mount/+bug/1891552/+subscriptions
--
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1891552] Re: Segmentation Fault in libpcre2-8-0 when using regex in (cifs) volume
Thank you for the verification! Can someone also verify the groovy (20.10) package? Since we can't release the older series without newer ones ready beforehand. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1891552 Title: Segmentation Fault in libpcre2-8-0 when using regex in (cifs) volume To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libpam-mount/+bug/1891552/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1891552] Re: Segmentation Fault in libpcre2-8-0 when using regex in (cifs) volume
Hi Brian, I tested the focal-proposed version with my configured pam_mount.conf.xml and it seems to be working fine now. Package Version: libpam-mount/focal-proposed,now 2.16-10ubuntu0.20.04.1 amd64 In my pam_mount.conf.xml I am using a 'regex="yes"' and an "and" condition. I switched to a different user on the terminal, the matching regex is shown and the volume is mounted correctly. Thanks a lot! Daniel ** Tags removed: verification-needed-focal ** Tags added: verification-done-focal -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1891552 Title: Segmentation Fault in libpcre2-8-0 when using regex in (cifs) volume To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libpam-mount/+bug/1891552/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1891552] Re: Segmentation Fault in libpcre2-8-0 when using regex in (cifs) volume
Hello Daniel, or anyone else affected, Accepted libpam-mount into groovy-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/libpam- mount/2.16-10ubuntu0.20.10.1 in a few hours, and then in the -proposed repository. Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users. If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, what testing has been performed on the package and change the tag from verification-needed- groovy to verification-done-groovy. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification- failed-groovy. In either case, without details of your testing we will not be able to proceed. Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance for helping! N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days. ** Also affects: libpam-mount (Ubuntu Groovy) Importance: Undecided Status: New ** Changed in: libpam-mount (Ubuntu Groovy) Status: New => Fix Committed ** Tags added: verification-needed verification-needed-groovy ** Changed in: libpam-mount (Ubuntu Focal) Status: Triaged => Fix Committed ** Tags added: verification-needed-focal -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1891552 Title: Segmentation Fault in libpcre2-8-0 when using regex in (cifs) volume To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libpam-mount/+bug/1891552/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1891552] Re: Segmentation Fault in libpcre2-8-0 when using regex in (cifs) volume
** Description changed:
[Impact]
Mounting a cifs volume with a regex condition results in a segfault.
[Test Plan]
===
$ lxc launch images:ubuntu/focal lp1891552-fix-segfault
$ lxc shell lp1891552-fix-segfault
# apt update && apt install cifs-utils libpam-mount
# adduser user
// add the following lines in /etc/security/pam_mount.conf.xml above the
"" line.
^[a-z]{3}.*$
# su - user
// you'll get a segfault.
// with the patched version, it shouldn't segfault and everything
// should work fine, as intended.
[Where Problems Could Occur]
With this problem known, if the user has found a workaround for mounting
a cifs volume using some extra configuration or so, then that could
break the same on upgrade, I believe. For example, having a workaround
way of inserting in /etc/security/pam_mount.conf.xml with
manipulation and some hacking could get this to work and then upgrade
could break the hack. But on a brighter side, they could get back to
using the "right" way of inserting a in the .conf.xml file.
+ [Other Info]
+
+ The autopkgtests of this package that we've added back in Bionic have
degraded since then and were regularly failing. We know the fixes and they were
already accepted by Debian. As usual with test fixes they do not
+ qualify for an upload/SRU on their own, but since we touch these packages
anyway we also include the test fixes which will help to add back some
coverage. Also OTOH the SRU would be blocked with unresolvable test issues
without doing so.
+
[Discussion(s)]
===
At system start the system freezes completely. Then I retested during a
running session on the command line and I'm getting the error message
Segmentation fault
when I login to another user.
If I remove the 'regex="yes"' everything works.
If I remove the "and" condition everything works.
If I downgrade the libpam-mount package to version 2.16-3ubuntu0.1 of Ubuntu
18.04 everything works including using the regex condition. In Ubuntu 18.04
everything worked fine as well.
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1891552
Title:
Segmentation Fault in libpcre2-8-0 when using regex in (cifs) volume
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/libpam-mount/+bug/1891552/+subscriptions
--
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1891552] Re: Segmentation Fault in libpcre2-8-0 when using regex in (cifs) volume
** Merge proposal linked: https://code.launchpad.net/~utkarsh/ubuntu/+source/libpam-mount/+git/libpam-mount/+merge/400286 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1891552 Title: Segmentation Fault in libpcre2-8-0 when using regex in (cifs) volume To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libpam-mount/+bug/1891552/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1891552] Re: Segmentation Fault in libpcre2-8-0 when using regex in (cifs) volume
** Description changed:
- Hello,
+ [Impact]
+
- there seems to be a bug in libpam-mount in version 2.16-10 used in
- Ubuntu 20.04.
+ Mount a cifs volume with a regex condition results in a segfault.
- I want to mount a cifs volume with a regex condition.
+
+ [Test Plan]
+ ===
+
+ $ lxc launch images:ubuntu/focal lp1891552-fix-segfault
+
+ $ lxc shell lp1891552-fix-segfault
+
+ # apt update && apt install cifs-utils libpam-mount
+
+ # adduser user
+
+ // add the following lines in /etc/security/pam_mount.conf.xml above the
+ "" line.
-
- ^[a-z]{3}.*$
-
+
+ ^[a-z]{3}.*$
+
+
+ # su - user
+
+ // you'll get a segfault.
+
+ // with the patched version, it shouldn't segfault and everything
+ // should work fine, as intended.
+
+
+ [Where Problems Could Occur]
+
+
+ With this problem known, if the user has found a workaround for mounting
+ a cifs volume using some extra configuration or so, then that could
+ break the same on upgrade, I believe. For example, having a workaround
+ way of inserting in /etc/security/pam_mount.conf.xml with
+ manipulation and some hacking could get this to work and then upgrade
+ could break the hack. But on a brighter side, they could get back to
+ using the "right" way of inserting a in the .conf.xml file.
+
+
+ [Discussion(s)]
+ ===
At system start the system freezes completely. Then I retested during a
running session on the command line and I'm getting the error message
Segmentation fault
when I login to another user.
If I remove the 'regex="yes"' everything works.
If I remove the "and" condition everything works.
If I downgrade the libpam-mount package to version 2.16-3ubuntu0.1 of Ubuntu
18.04 everything works including using the regex condition. In Ubuntu 18.04
everything worked fine as well.
-
- Best regards
- Daniel
** Description changed:
[Impact]
- Mount a cifs volume with a regex condition results in a segfault.
-
+ Mounting a cifs volume with a regex condition results in a segfault.
[Test Plan]
===
$ lxc launch images:ubuntu/focal lp1891552-fix-segfault
$ lxc shell lp1891552-fix-segfault
# apt update && apt install cifs-utils libpam-mount
# adduser user
// add the following lines in /etc/security/pam_mount.conf.xml above the
"" line.
^[a-z]{3}.*$
# su - user
// you'll get a segfault.
// with the patched version, it shouldn't segfault and everything
// should work fine, as intended.
-
[Where Problems Could Occur]
With this problem known, if the user has found a workaround for mounting
a cifs volume using some extra configuration or so, then that could
break the same on upgrade, I believe. For example, having a workaround
way of inserting in /etc/security/pam_mount.conf.xml with
manipulation and some hacking could get this to work and then upgrade
could break the hack. But on a brighter side, they could get back to
using the "right" way of inserting a in the .conf.xml file.
-
[Discussion(s)]
===
At system start the system freezes completely. Then I retested during a
running session on the command line and I'm getting the error message
Segmentation fault
when I login to another user.
If I remove the 'regex="yes"' everything works.
If I remove the "and" condition everything works.
If I downgrade the libpam-mount package to version 2.16-3ubuntu0.1 of Ubuntu
18.04 everything works including using the regex condition. In Ubuntu 18.04
everything worked fine as well.
** Changed in: libpam-mount (Ubuntu Focal)
Assignee: (unassigned) => Utkarsh Gupta (utkarsh)
** No longer affects: pcre2 (Ubuntu)
** No longer affects: pcre2 (Ubuntu Focal)
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1891552
Title:
Segmentation Fault in libpcre2-8-0 when using regex in (cifs) volume
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/libpam-mount/+bug/1891552/+subscriptions
--
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1891552] Re: Segmentation Fault in libpcre2-8-0 when using regex in (cifs) volume
** Merge proposal linked: https://code.launchpad.net/~utkarsh/ubuntu/+source/libpam-mount/+git/libpam-mount/+merge/400121 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1891552 Title: Segmentation Fault in libpcre2-8-0 when using regex in (cifs) volume To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libpam-mount/+bug/1891552/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1891552] Re: Segmentation Fault in libpcre2-8-0 when using regex in (cifs) volume
This was fixed in Debian by [1] and landed in Hirsute as part of a sync. The fix won't land in Focal automatically, it's Stable Release Update [1] that has to be driven manually. [1] https://salsa.debian.org/debian/libpam-mount/-/commit/c166793d582048587a4091a6deed9824b535f4c8 [2] https://wiki.ubuntu.com/StableReleaseUpdates ** Tags added: server-next -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1891552 Title: Segmentation Fault in libpcre2-8-0 when using regex in (cifs) volume To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libpam-mount/+bug/1891552/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1891552] Re: Segmentation Fault in libpcre2-8-0 when using regex in (cifs) volume
** Also affects: libpam-mount (Ubuntu Focal) Importance: Undecided Status: New ** Also affects: pcre2 (Ubuntu Focal) Importance: Undecided Status: New ** Changed in: libpam-mount (Ubuntu Focal) Status: New => Triaged -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1891552 Title: Segmentation Fault in libpcre2-8-0 when using regex in (cifs) volume To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libpam-mount/+bug/1891552/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1891552] Re: Segmentation Fault in libpcre2-8-0 when using regex in (cifs) volume
Thanks for the fix. Do you know when this version will be released in the focal repository? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1891552 Title: Segmentation Fault in libpcre2-8-0 when using regex in (cifs) volume To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libpam-mount/+bug/1891552/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1891552] Re: Segmentation Fault in libpcre2-8-0 when using regex in (cifs) volume
** Changed in: pcre2 (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1891552 Title: Segmentation Fault in libpcre2-8-0 when using regex in (cifs) volume To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libpam-mount/+bug/1891552/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1891552] Re: Segmentation Fault in libpcre2-8-0 when using regex in (cifs) volume
This bug was fixed in the package libpam-mount - 2.17-2 --- libpam-mount (2.17-2) unstable; urgency=medium * Make d/not-installed arch independent * Document sshfs without fd0ssh. Thanks to Michel Le Bihan (Closes: #952989) -- Jochen Sprickerhof Fri, 25 Dec 2020 16:54:23 +0100 ** Changed in: libpam-mount (Ubuntu) Status: New => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1891552 Title: Segmentation Fault in libpcre2-8-0 when using regex in (cifs) volume To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libpam-mount/+bug/1891552/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1891552] Re: Segmentation Fault in libpcre2-8-0 when using regex in (cifs) volume
Is there something new on this topic? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1891552 Title: Segmentation Fault in libpcre2-8-0 when using regex in (cifs) volume To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libpam-mount/+bug/1891552/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
