Bug 2253702 (AMD-SB-3006, CVE-2023-20573)

Summary: CVE-2023-20573 kernel: hw: AMD Secure Nested Paging Debug Exception
Product: [Other] Security Response Reporter: Nick Tait <ntait>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedCC: acaringi, allarkin, bhu, chwhite, dbohanno, debarbos, dfreiber, drow, dvlasenk, ezulian, hkrzesin, jarod, jburrell, jfaracco, jforbes, jlelli, joe.lawrence, jshortt, jstancek, jwyatt, ldoskova, lgoncalv, michal.skrivanek, mmilgram, mperina, mstowell, nmurray, ptalbert, rogbas, rparrazo, rrobaina, rvrbovsk, scweaver, security-response-team, tglozar, vkumar, wcosta, williams, wmealing, ycote, ykopkova
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in AMD hardware using the Secure Encrypted Virtualization – Secure Nested Paging (SEV-SNP) feature. This issue may allow a privileged attacker to prevent the delivery of debug exceptions to SEV-SNP guests, potentially resulting in guests not receiving expected debug information.
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Bug Depends On: 2253705    
Bug Blocks: 2253703    

Description Nick Tait 2023-12-08 23:03:51 UTC
On AMD hardware using the Secure Encrypted Virtualization – Secure Nested Paging (SEV-SNP) feature,  a privileged attacker can prevent the delivery of debug exceptions to SEV-SNP guests potentially resulting in guests not receiving expected debug information.