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Intel® Core™ Ultra Processor Stream Cache Advisory
| Intel ID: | INTEL-SA-01038 |
|---|---|
| Advisory Category: | Hardware |
| Impact of vulnerability: | Escalation of Privilege |
| Severity rating: | HIGH |
| Original release: | 08/13/2024 |
| Last revised: | 08/13/2024 |
Summary:
A potential security vulnerability in the Intel® Core™ Ultra Processor stream cache mechanism may allow escalation of privilege. Intel is releasing microcode updates to mitigate this potential vulnerability.
Vulnerability Details:
CVEID: CVE-2023-42667
Description: Improper isolation in the Intel® Core™ Ultra Processor stream cache mechanism may allow an authenticated user to potentially enable escalation of privilege via local access.
CVSS Base Score 3.1: 7.8 High
CVSS Vector 3.1: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
CVSS Base Score 4.0: 7.3 High
CVSS Vector 4.0: CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Affected Products:
Product Collection |
Platform |
Vertical Segment |
CPU ID |
Platform ID |
Intel® Core™ Ultra processors |
Meteor Lake |
Client |
0xa06a4 |
0x7 |
Recommendation:
Intel recommends that users of affected Intel® Processors update to the latest version firmware provided by the system manufacturer that addresses these issues.
Intel has released microcode version 0x17 for the affected Intel® Core™ Ultra processors that are currently supported on the public github repository.
Please see details below on access to the microcode:
Public Github:https://github.com/intel/Intel-Linux-Processor-Microcode-Data-Files.
The microcode patch can be OS loaded.
Acknowledgements:
This issue was discovered internally by Intel employees. Intel would like to thanks Rober J Miller, Brent Calhoon, Priel Aharonian, Persio Morrobel Gomez and Paul Grosen for reporting this issue.
Intel, and nearly the entire technology industry, follows a disclosure practice called Coordinated Disclosure, under which a cybersecurity vulnerability is generally publicly disclosed only after mitigations are available.
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