Bug 2248122 (CVE-2023-5090)

Summary: CVE-2023-5090 kernel: KVM: SVM: improper check in svm_set_x2apic_msr_interception allows direct access to host x2apic msrs
Product: [Other] Security Response Reporter: Mauro Matteo Cascella <mcascell>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: acaringi, allarkin, bhu, chwhite, cye, cyin, dbohanno, debarbos, dfreiber, dvlasenk, ezulian, hkrzesin, jarod, jburrell, jdenham, jfaracco, jforbes, jlelli, joe.lawrence, jshortt, jstancek, jwyatt, kcarcia, ldoskova, lgoncalv, lzampier, mstowell, nmurray, ptalbert, rogbas, rparrazo, rrobaina, rvrbovsk, scweaver, tglozar, vkumar, wcosta, williams, wmealing, ycote, ykopkova, zhijwang
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: kernel 6.6-rc7 Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in KVM. An improper check in svm_set_x2apic_msr_interception() may allow direct access to host x2apic msrs when the guest resets its apic, potentially leading to a denial of service condition.
Story Points: ---
Clone Of: Environment:
Last Closed: Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 2248123    
Bug Blocks: 2239886    

Description Mauro Matteo Cascella 2023-11-06 10:19:06 UTC
An improper check in svm_set_x2apic_msr_interception() may allow direct access to host x2apic msrs when the guest resets its apic, potentially leading to a denial of service condition.

Upstream patch & commit:
https://lore.kernel.org/kvm/20230928173354.217464-1-mlevitsk@redhat.com/T
https://github.com/torvalds/linux/commit/b65235f6e102354ccafda601eaa1c5bef5284d21

Comment 1 Mauro Matteo Cascella 2023-11-06 10:19:32 UTC
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2248123]

Comment 4 Justin M. Forbes 2023-11-08 18:06:46 UTC
This was fixed for Fedora with the 6.5.9 stable kernel updates.

Comment 5 errata-xmlrpc 2024-06-12 01:40:21 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Extended Update Support

Via RHSA-2024:3854 https://access.redhat.com/errata/RHSA-2024:3854

Comment 6 errata-xmlrpc 2024-06-12 01:53:42 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Extended Update Support

Via RHSA-2024:3855 https://access.redhat.com/errata/RHSA-2024:3855

Comment 9 errata-xmlrpc 2024-07-02 08:53:31 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2024:4211 https://access.redhat.com/errata/RHSA-2024:4211

Comment 10 errata-xmlrpc 2024-07-08 02:01:33 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2024:4352 https://access.redhat.com/errata/RHSA-2024:4352