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Slackware Linux ProjectSSA-2022-067-01
HistoryMar 09, 2022 - 4:16 a.m.

[slackware-security] Slackware 15.0 kernel

2022-03-0904:16:04
Slackware Linux Project
www.slackware.com
60

8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

9 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:L/Au:S/C:C/I:C/A:C

0.095 Low

EPSS

Percentile

94.6%

New kernel packages are available for Slackware 15.0 to fix security issues.

Here are the details from the Slackware 15.0 ChangeLog:

patches/packages/linux-5.15.27/: Upgraded.
These updates fix various bugs and security issues, including the recently
announced “Dirty Pipe” vulnerability which allows overwriting data in
arbitrary read-only files (CVE-2022-0847).
Be sure to upgrade your initrd after upgrading the kernel packages.
If you use lilo to boot your machine, be sure lilo.conf points to the correct
kernel and initrd and run lilo as root to update the bootloader.
If you use elilo to boot your machine, you should run eliloconfig to copy the
kernel and initrd to the EFI System Partition.
For more information, see:
Fixed in 5.15.20:
https://vulners.com/cve/CVE-2022-0492
Fixed in 5.15.23:
https://vulners.com/cve/CVE-2022-0516
https://vulners.com/cve/CVE-2022-0435
https://vulners.com/cve/CVE-2022-0487
Fixed in 5.15.24:
https://vulners.com/cve/CVE-2022-25375
https://vulners.com/cve/CVE-2022-25258
Fixed in 5.15.25:
https://vulners.com/cve/CVE-2022-0847
Fixed in 5.15.26:
https://vulners.com/cve/CVE-2022-25636
(
Security fix *)

Where to find the new packages:

Thanks to the friendly folks at the OSU Open Source Lab
(http://osuosl.org) for donating FTP and rsync hosting
to the Slackware project! :-)

Also see the “Get Slack” section on http://slackware.com for
additional mirror sites near you.

Updated packages for Slackware 15.0:
ftp://ftp.slackware.com/pub/slackware/slackware-15.0/patches/packages/linux-5.15.27/kernel-generic-5.15.27-i586-1.txz
ftp://ftp.slackware.com/pub/slackware/slackware-15.0/patches/packages/linux-5.15.27/kernel-generic-smp-5.15.27_smp-i686-1.txz
ftp://ftp.slackware.com/pub/slackware/slackware-15.0/patches/packages/linux-5.15.27/kernel-headers-5.15.27_smp-x86-1.txz
ftp://ftp.slackware.com/pub/slackware/slackware-15.0/patches/packages/linux-5.15.27/kernel-huge-5.15.27-i586-1.txz
ftp://ftp.slackware.com/pub/slackware/slackware-15.0/patches/packages/linux-5.15.27/kernel-huge-smp-5.15.27_smp-i686-1.txz
ftp://ftp.slackware.com/pub/slackware/slackware-15.0/patches/packages/linux-5.15.27/kernel-modules-5.15.27-i586-1.txz
ftp://ftp.slackware.com/pub/slackware/slackware-15.0/patches/packages/linux-5.15.27/kernel-modules-smp-5.15.27_smp-i686-1.txz
ftp://ftp.slackware.com/pub/slackware/slackware-15.0/patches/packages/linux-5.15.27/kernel-source-5.15.27_smp-noarch-1.txz

Updated packages for Slackware x86_64 15.0:
ftp://ftp.slackware.com/pub/slackware/slackware64-15.0/patches/packages/linux-5.15.27/kernel-generic-5.15.27-x86_64-1.txz
ftp://ftp.slackware.com/pub/slackware/slackware64-15.0/patches/packages/linux-5.15.27/kernel-headers-5.15.27-x86-1.txz
ftp://ftp.slackware.com/pub/slackware/slackware64-15.0/patches/packages/linux-5.15.27/kernel-huge-5.15.27-x86_64-1.txz
ftp://ftp.slackware.com/pub/slackware/slackware64-15.0/patches/packages/linux-5.15.27/kernel-modules-5.15.27-x86_64-1.txz
ftp://ftp.slackware.com/pub/slackware/slackware64-15.0/patches/packages/linux-5.15.27/kernel-source-5.15.27-noarch-1.txz

MD5 signatures:

Slackware 15.0 packages:
2a85a2797772459ca80df03a5ed769e3 kernel-generic-5.15.27-i586-1.txz
15119e1d6ef2490954ff635b6ccb5fe2 kernel-generic-smp-5.15.27_smp-i686-1.txz
ed85b4ee5670ec878a941102835c13e8 kernel-headers-5.15.27_smp-x86-1.txz
ccd62618252d7f4c030eae7fd3d5129b kernel-huge-5.15.27-i586-1.txz
61ca0e30fc9e28fbfa2b858630962fb0 kernel-huge-smp-5.15.27_smp-i686-1.txz
0e391f69e52e76d47a7908be87f0aee8 kernel-modules-5.15.27-i586-1.txz
43770e99461b9f2ce89660a732e8e74e kernel-modules-smp-5.15.27_smp-i686-1.txz
807820a51fce06d90ba50e28ad3d9a56 kernel-source-5.15.27_smp-noarch-1.txz

Slackware x86_64 15.0 packages:
926aab0cb4bd96fbe5553cf13d6afac8 kernel-generic-5.15.27-x86_64-1.txz
04d89ece2998fd8da2c4639c3733e2d6 kernel-headers-5.15.27-x86-1.txz
b1c4db383ecc04f48d8f250cbc6aae0a kernel-huge-5.15.27-x86_64-1.txz
a727615770b69fd01923f27b97900b1b kernel-modules-5.15.27-x86_64-1.txz
15c383b260409e747a6b765eb1efc9b2 kernel-source-5.15.27-noarch-1.txz

Installation instructions:

Upgrade the packages as root:
> upgradepkg kernel-*.txz

If you are using an initrd, you’ll need to rebuild it.

For a 32-bit SMP machine, use this command (substitute the appropriate
kernel version if you are not running Slackware 15.0):
> /usr/share/mkinitrd/mkinitrd_command_generator.sh -k 5.15.27-smp | bash

For a 64-bit machine, or a 32-bit uniprocessor machine, use this command
(substitute the appropriate kernel version if you are not running
Slackware 15.0):
> /usr/share/mkinitrd/mkinitrd_command_generator.sh -k 5.15.27 | bash

Please note that “uniprocessor” has to do with the kernel you are running,
not with the CPU. Most systems should run the SMP kernel (if they can)
regardless of the number of cores the CPU has. If you aren’t sure which
kernel you are running, run “uname -a”. If you see SMP there, you are
running the SMP kernel and should use the 5.15.27-smp version when running
mkinitrd_command_generator. Note that this is only for 32-bit – 64-bit
systems should always use 5.15.27 as the version.

If you are using lilo or elilo to boot the machine, you’ll need to ensure
that the machine is properly prepared before rebooting.

If using LILO:
By default, lilo.conf contains an image= line that references a symlink
that always points to the correct kernel. No editing should be required
unless your machine uses a custom lilo.conf. If that is the case, be sure
that the image= line references the correct kernel file. Either way,
you’ll need to run “lilo” as root to reinstall the boot loader.

If using elilo:
Ensure that the /boot/vmlinuz symlink is pointing to the kernel you wish
to use, and then run eliloconfig to update the EFI System Partition.

How to protect your server from attacks?

8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

9 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:L/Au:S/C:C/I:C/A:C

0.095 Low

EPSS

Percentile

94.6%

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