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fedoraFedoraFEDORA:7DBC7203D549
HistoryNov 17, 2023 - 1:20 a.m.

[SECURITY] Fedora 38 Update: microcode_ctl-2.1-55.2.fc38

2023-11-1701:20:23
lists.fedoraproject.org
16
microcode utility
tigran aivazian
system boot
cpu
microcode update
volatile
unix

CVSS3

8.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

7.1

Confidence

Low

EPSS

0

Percentile

5.1%

JSON

The microcode_ctl utility is a companion to the microcode driver written by Tigran Aivazian <tigran(a)aivazian.fsnet.co.uk>. The microcode update is volatile and needs to be uploaded on each system boot i.e. it doesn’t reflash your cpu permanently, reboot and it reverts back to the old microcode.

OSVersionArchitecturePackageVersionFilename
Fedora38anymicrocode_ctl< 2.1UNKNOWN

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CVSS3

8.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

7.1

Confidence

Low

EPSS

0

Percentile

5.1%

JSON
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