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SUSE: 2021:3196-1 Important: Kernel Live Patch Fixing KVM Issues
suse
September 23, 2021
An update that fixes two vulnerabilities is now available
Summary
This update for the Linux Kernel 4.4.180-94_147 fixes several issues. The following security issues were fixed: - CVE-2021-3653: Fixed missing validation of the KVM `int_ctl` VMCB field that would have allowed a malicious L1 guest to enable AVIC support for the L2 guest (bsc#1189420). - CVE-2021-38198: Fixed KVM MMU to use the correct inherited permissions to get shadow page (bsc#1189278). Patch Instructions: To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". Alternatively you can run the command listed for your product: - SUSE Linux Enterprise Server for SAP 12-SP3:
Topics Covered
References
#1189278 #1189420
Cross- CVE-2021-3653 CVE-2021-38198
CVSS scores:
CVE-2021-3653 (SUSE): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVE-2021-38198 (SUSE): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected Products:
SUSE Linux Enterprise Server for SAP 12-SP3
SUSE Linux Enterprise Server 12-SP3-LTSS
https://www.suse.com/security/cve/CVE-2021-3653.html
https://www.suse.com/security/cve/CVE-2021-38198.html
https://bugzilla.suse.com/1189278
https://bugzilla.suse.com/1189420
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Severity
important
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Medium
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Critical
Announcement ID: SUSE-SU-2021:3196-1
Rating: important
Topics Covered
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