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slackwareSlackware Linux ProjectSSA-2023-205-01
HistoryJul 24, 2023 - 10:21 p.m.

[slackware-security] kernel-firmware

2023-07-2422:21:22
Slackware Linux Project
www.slackware.com
29
slackware
kernel-firmware
upgrade
amd
zen2
vulnerability
firmware
security
amd microcode
use-after-free
tavis ormandy
seclists
oss-sec
cve-2023-20593

CVSS3

5.5

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

EPSS

0.001

Percentile

35.1%

New kernel-firmware packages are available for Slackware 14.2, 15.0,
and -current to fix a security issue.

Here are the details from the Slackware 15.0 ChangeLog:

patches/packages/kernel-firmware-20230724_59fbffa-noarch-1.txz: Upgraded.
AMD microcode updated to fix a use-after-free in AMD Zen2 processors.
From Tavis Ormandy’s annoucement of the issue:
“The practical result here is that you can spy on the registers of other
processes. No system calls or privileges are required.
It works across virtual machines and affects all operating systems.
I have written a poc for this issue that’s fast enough to reconstruct
keys and passwords as users log in.”
For more information, see:
https://seclists.org/oss-sec/2023/q3/59
https://vulners.com/cve/CVE-2023-20593
(* 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 package for Slackware 14.2:
ftp://ftp.slackware.com/pub/slackware/slackware-14.2/patches/packages/kernel-firmware-20230724_59fbffa-noarch-1.txz

Updated package for Slackware x86_64 14.2:
ftp://ftp.slackware.com/pub/slackware/slackware64-14.2/patches/packages/kernel-firmware-20230724_59fbffa-noarch-1.txz

Updated package for Slackware 15.0:
ftp://ftp.slackware.com/pub/slackware/slackware-15.0/patches/packages/kernel-firmware-20230724_59fbffa-noarch-1.txz

Updated package for Slackware x86_64 15.0:
ftp://ftp.slackware.com/pub/slackware/slackware64-15.0/patches/packages/kernel-firmware-20230724_59fbffa-noarch-1.txz

Updated package for Slackware -current:
ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/a/kernel-firmware-20230724_59fbffa-noarch-1.txz

Updated package for Slackware x86_64 -current:
ftp://ftp.slackware.com/pub/slackware/slackware64-current/slackware64/a/kernel-firmware-20230724_59fbffa-noarch-1.txz

MD5 signatures:

Slackware 14.2 package:
b799006d4733056e080fe311e732abc0 kernel-firmware-20230724_59fbffa-noarch-1.txz

Slackware x86_64 14.2 package:
b799006d4733056e080fe311e732abc0 kernel-firmware-20230724_59fbffa-noarch-1.txz

Slackware 15.0 package:
b799006d4733056e080fe311e732abc0 kernel-firmware-20230724_59fbffa-noarch-1.txz

Slackware x86_64 15.0 package:
b799006d4733056e080fe311e732abc0 kernel-firmware-20230724_59fbffa-noarch-1.txz

Slackware -current package:
b799006d4733056e080fe311e732abc0 a/kernel-firmware-20230724_59fbffa-noarch-1.txz

Slackware x86_64 -current package:
b799006d4733056e080fe311e732abc0 a/kernel-firmware-20230724_59fbffa-noarch-1.txz

Installation instructions:

Upgrade the package as root:
> upgradepkg kernel-firmware-20230724_59fbffa-noarch-1.txz

A reboot will be required to load the new firmware.

CVSS3

5.5

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

EPSS

0.001

Percentile

35.1%