Thank you for your bug report. That eems indeed worth fixing, it's a bit difficult to know how sensitive the problem is without details though. Could you provide a bit more context on the bug, maybe a way to trigger it?
** Changed in: libx11 (Ubuntu) Importance: Undecided => High -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to libx11 in Ubuntu. https://bugs.launchpad.net/bugs/1820509 Title: Avoid use-after-free in _XimProtoSetIMValues() Status in libx11 package in Ubuntu: New Bug description: I think that the patch https://gitlab.freedesktop.org/xorg/lib/libx11/commit/003e30a66a249f5c70b30d1c187385124cd4cdad (issue: https://gitlab.freedesktop.org/xorg/lib/libx11/issues/49) should be backported to both Ubuntu 16.04 LTS Xenial and Ubuntu 18.04 LTS Bionic. Although it didn't get an explicit CVS, use-after-free scenarios should not get underestimated. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libx11/+bug/1820509/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
