apport information ** Attachment added: "UdevDb.txt" https://bugs.launchpad.net/bugs/2008823/+attachment/5661369/+files/UdevDb.txt
-- 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/2008823 Title: /sys/kernel/boot_params/data leaks random data Status in linux package in Ubuntu: Incomplete Bug description: Looking at /sys/kernel/boot_params/data I see that much of the 4096 byte buffer is old kernel data. It really stood out as I saw parts of email contents in there. It seems be random RAM contents from what was present before rebooting. This was seen on Ubuntu 22.04.2 LTS with kernel 5.19.0-32-generic. After rebooting again I saw a fragment of yet another email in there. A couple of ubuntu 22.10 systems show similar non-zero data, but nothing as recognizable. Nothing after the entries at the front of e820_table was zeroed out as it should be. This could leak a substantial amount of data such as encryption keys. /sys/kernel/boot_params/data is readable by all users. ProblemType: Bug DistroRelease: Ubuntu 22.04 Package: linux-image-5.19.0-32-generic 5.19.0-32.33~22.04.1 ProcVersionSignature: Ubuntu 5.19.0-32.33~22.04.1-generic 5.19.17 Uname: Linux 5.19.0-32-generic x86_64 ApportVersion: 2.20.11-0ubuntu82.3 Architecture: amd64 CasperMD5CheckResult: unknown Date: Tue Feb 28 13:24:06 2023 InstallationDate: Installed on 2019-10-17 (1229 days ago) InstallationMedia: Ubuntu-Server 18.04.3 LTS "Bionic Beaver" - Release amd64 (20190805) ProcEnviron: TERM=screen-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: linux-signed-hwe-5.19 UpgradeStatus: Upgraded to jammy on 2022-08-13 (199 days ago) --- ProblemType: Bug AlsaVersion: Advanced Linux Sound Architecture Driver Version k5.19.0-38-generic. AplayDevices: Error: [Errno 2] No such file or directory: 'aplay' ApportVersion: 2.20.11-0ubuntu82.3 Architecture: amd64 ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord' AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', '/dev/snd/controlC0', '/dev/snd/pcmC0D1p', '/dev/snd/pcmC0D0p', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: CRDA: N/A Card0.Amixer.info: Error: [Errno 2] No such file or directory: 'amixer' Card0.Amixer.values: Error: [Errno 2] No such file or directory: 'amixer' CasperMD5CheckResult: unknown DistroRelease: Ubuntu 22.04 InstallationDate: Installed on 2019-10-17 (1265 days ago) InstallationMedia: Ubuntu-Server 18.04.3 LTS "Bionic Beaver" - Release amd64 (20190805) IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig' Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 002: ID 1221:3234 Unknown manufacturer Disk (Thumb drive) Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Lsusb-t: /: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/1p, 5000M /: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/6p, 480M |__ Port 3: Dev 2, If 0, Class=Mass Storage, Driver=usb-storage, 480M MachineType: retsamarret To be filled by O.E.M. Package: linux (not installed) PciMultimedia: ProcEnviron: TERM=screen-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.19.0-38-generic root=/dev/mapper/ubuntu--vg-ubuntu--lv ro ProcVersionSignature: Ubuntu 5.19.0-38.39~22.04.1-generic 5.19.17 RelatedPackageVersions: linux-restricted-modules-5.19.0-38-generic N/A linux-backports-modules-5.19.0-38-generic N/A linux-firmware 20220329.git681281e4-0ubuntu3.12 RfKill: Error: [Errno 2] No such file or directory: 'rfkill' StagingDrivers: atomisp_lm3554 atomisp_gmin_platform Tags: jammy uec-images staging Uname: Linux 5.19.0-38-generic x86_64 UpgradeStatus: Upgraded to jammy on 2022-08-13 (235 days ago) UserGroups: adm cdrom dip lxd plugdev sudo _MarkForUpload: True dmi.bios.date: 04/21/2017 dmi.bios.release: 5.6 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 5.6.5 dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: Aptio CRB dmi.board.vendor: AMI Corporation dmi.board.version: To be filled by O.E.M. dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: To Be Filled By O.E.M. dmi.chassis.version: To Be Filled By O.E.M. dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr5.6.5:bd04/21/2017:br5.6:svnretsamarret:pnTobefilledbyO.E.M.:pvrTobefilledbyO.E.M.:rvnAMICorporation:rnAptioCRB:rvrTobefilledbyO.E.M.:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:skuTobefilledbyO.E.M.: dmi.product.family: To be filled by O.E.M. dmi.product.name: To be filled by O.E.M. dmi.product.sku: To be filled by O.E.M. dmi.product.version: To be filled by O.E.M. dmi.sys.vendor: retsamarret To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2008823/+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
