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SUSE: 2021:3073-1 Important: Live Kernel Patch Security Update

suse
Calendar Grey September 16, 2021
Dist Suse Esm H88
SUSE Security Update: Critical Live Patch 22 addresses kernel vulnerabilities for SLE 15 SP2. Ensure your system is protected!
An update that fixes three vulnerabilities is now available

Summary

This update for the Linux Kernel 4.12.14-122_80 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-2021-3656: Fixed KVM nSVM nested VMLOAD/VMSAVE interception (bsc#1189418). - 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 Module for Live Patching 15-SP3:

Topics%20covered

Topics Covered

security advisory kernel update kernel patch important SUSE live patch

References

#1189278 #1189418 #1189420

Cross- CVE-2021-3653 CVE-2021-3656 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-2021-3656 (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 Module for Live Patching 15-SP3

SUSE Linux Enterprise Module for Live Patching 15-SP2

SUSE Linux Enterprise Module for Live Patching 15-SP1

SUSE Linux Enterprise Module for Live Patching 15

SUSE Linux Enterprise Live Patching 12-SP5

SUSE Linux Enterprise Live Patching 12-SP4

https://www.suse.com/security/cve/CVE-2021-3653.html

https://www.suse.com/security/cve/CVE-2021-3656.html

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2021:3073-1
Rating: important

Topics%20covered

Topics Covered

security advisory kernel update kernel patch important SUSE live patch

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