*** This bug is a duplicate of bug 2046844 *** https://bugs.launchpad.net/bugs/2046844
Hi cipricus, This is a security feature working as intended. Ubuntu recently decided to disable unprivileged access to user namespaces. You can find more information it about it here: https://ubuntu.com/blog/ubuntu-23-10-restricted-unprivileged-user-namespaces https://discourse.ubuntu.com/t/spec-unprivileged-user-namespace-restrictions-via-apparmor-in-ubuntu-23-10/37626 https://bugs.launchpad.net/ubuntu/+source/apparmor/+bug/2046844 It was included (but turned off in 23.10). In 24.04, it has been turned on. We have been adding apparmor profiles for most packaged applications. Saying that, firefox downloaded from tarballs or other places don't come with an apparmor profile, so the mitigation isn't relaxed for them. You can enable user namespaces by either making a apparmor profile for your firefox installs, making sure the directory where firefox is installed is correct in the profile, or by just enabling user namespaces for your system. There is instructions to do this in the first blog link. Thanks, Matthew ** This bug has been marked a duplicate of bug 2046844 AppArmor user namespace creation restrictions cause many applications to crash with SIGTRAP -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2056297 Title: Non-flatpak Firefox-based browsers crash with kernel 6.8.0-11-generic in 24.04 Status in linux package in Ubuntu: New Bug description: All details are to be found in my previous bug report (https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/2056190). Given that simply reverting to kernel 6.5.0-17-generic fixes the problem, the bug seems to be with the 6.8.0 kernel. Therefore I'm posting this. ProblemType: Bug DistroRelease: Ubuntu 24.04 Package: linux-image-6.8.0-11-generic 6.8.0-11.11 ProcVersionSignature: Ubuntu 6.8.0-11.11-generic 6.8.0-rc4 Uname: Linux 6.8.0-11-generic x86_64 ApportVersion: 2.28.0-0ubuntu1 Architecture: amd64 CRDA: N/A CasperMD5CheckResult: pass CurrentDesktop: KDE Date: Wed Mar 6 09:49:36 2024 InstallationDate: Installed on 2023-10-04 (154 days ago) InstallationMedia: Kubuntu 22.04 LTS "Jammy Jellyfish" - Release amd64 (20220419) MachineType: Sony Corporation VPCSB2P9E ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.8.0-11-generic root=UUID=0dbb7177-a759-43f8-86d2-53e3253805d5 ro quiet splash vt.handoff=7 PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: linux-restricted-modules-6.8.0-11-generic N/A linux-backports-modules-6.8.0-11-generic N/A linux-firmware 20240202.git36777504-0ubuntu1 SourcePackage: linux UpgradeStatus: Upgraded to noble on 2024-03-04 (2 days ago) dmi.bios.date: 11/16/2011 dmi.bios.release: 20.85 dmi.bios.vendor: INSYDE dmi.bios.version: R2085H4 dmi.board.asset.tag: N/A dmi.board.name: VAIO dmi.board.vendor: Sony Corporation dmi.board.version: N/A dmi.chassis.asset.tag: N/A dmi.chassis.type: 10 dmi.chassis.vendor: Sony Corporation dmi.chassis.version: N/A dmi.ec.firmware.release: 20.85 dmi.modalias: dmi:bvnINSYDE:bvrR2085H4:bd11/16/2011:br20.85:efr20.85:svnSonyCorporation:pnVPCSB2P9E:pvrC609DJQ5:rvnSonyCorporation:rnVAIO:rvrN/A:cvnSonyCorporation:ct10:cvrN/A:skuN/A: dmi.product.family: VAIO dmi.product.name: VPCSB2P9E dmi.product.sku: N/A dmi.product.version: C609DJQ5 dmi.sys.vendor: Sony Corporation To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2056297/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp