CVE-2023-46103

Published: 16 May 2024

Sequence of processor instructions leads to unexpected behavior in Intel(R) Core(TM) Ultra Processors may allow an authenticated user to potentially enable denial of service via local access.

From the Ubuntu Security Team

It was discovered that some Intel® Core™ Ultra processors did not properly handle particular instruction sequences. A local attacker could use this issue to cause a denial of service.

Priority

Cvss 3 Severity Score

4.7

Score breakdown

Status

Package	Release	Status
intel-microcode Launchpad, Ubuntu, Debian	bionic	Released (3.20240514.0ubuntu0.18.04.1+esm1) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
	focal	Released (3.20240514.0ubuntu0.20.04.1)
	jammy	Released (3.20240514.0ubuntu0.22.04.1)
	mantic	Released (3.20240514.0ubuntu0.23.10.1)
	noble	Released (3.20240514.0ubuntu0.24.04.1)
	trusty	Ignored (trusty doesn't support early microcode loading at runtime)
	upstream	Needs triage
	xenial	Released (3.20240514.0ubuntu0.16.04.1+esm1) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)

Severity score breakdown

Parameter	Value
Base score	4.7
Attack vector	Local
Attack complexity	High
Privileges required	Low
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

References

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