Bug 1218758 (CVE-2023-20573)

Summary:	VUL-0: CVE-2023-20573: kernel-firmware: AMD Secure Nested Paging Debug Exception
Product:	[Novell Products] SUSE Security Incidents	Reporter:	SMASH SMASH <smash_bz>
Component:	Incidents	Assignee:	Takashi Iwai <tiwai>
Status:	RESOLVED WONTFIX	QA Contact:	Security Team bot <security-team>
Severity:	Normal
Priority:	P3 - Medium	CC:	meissner, thomas.leroy
Version:	unspecified
Target Milestone:	---
Hardware:	Other
OS:	Other
URL:	https://smash.suse.de/issue/390878/
Whiteboard:
Found By:	Security Response Team	Services Priority:
Business Priority:		Blocker:	---
Marketing QA Status:	---	IT Deployment:	---

Description SMASH SMASH 2024-01-12 09:12:50 UTC

A privileged attacker
can prevent delivery of debug exceptions to SEV-SNP guests potentially
resulting in guests not receiving expected debug information.

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-20573
https://www.cve.org/CVERecord?id=CVE-2023-20573
https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-3006
https://bugzilla.redhat.com/show_bug.cgi?id=2253702

Comment 1 Takashi Iwai 2024-01-17 14:59:16 UTC

The update to the latest version 2023.11.30 was submitted to TW.

Comment 2 Takashi Iwai 2024-01-17 15:02:36 UTC

Bah, sorry, a wrong bug entry.

For this one, there is too little information.  Is the fixed firmware already available?

Comment 3 Takashi Iwai 2024-01-17 15:04:50 UTC

The AMD bulletin says:
"""
Mitigation

No mitigation is planned for this issue. SEV-SNP guest that have the alternate injection feature enabled are not affected.
"""

Is it a WONTFIX issue, then?

Comment 4 Marcus Meissner 2024-01-18 10:16:07 UTC

wontfix.