apport information
** Tags added: apport-collected staging
** Description changed:
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
** Attachment added: "AlsaDevices.txt"
https://bugs.launchpad.net/bugs/2008823/+attachment/5661360/+files/AlsaDevices.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
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