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fedoraFedoraFEDORA:62BA520B74A3
HistoryNov 23, 2023 - 1:11 a.m.

[SECURITY] Fedora 37 Update: microcode_ctl-2.1-53.3.fc37

2023-11-2301:11:53
lists.fedoraproject.org
5
microcode update
microcode driver
system boot
volatile
cpu
unix

8.8 High

CVSS3

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

7.4 High

AI Score

Confidence

Low

0.0004 Low

EPSS

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
Fedora37anymicrocode_ctl< 2.1UNKNOWN

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8.8 High

CVSS3

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

7.4 High

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

5.1%

JSON
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