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SUSE: 2021:2695-1 Important: Live Patch Security for Kernel

suse
Calendar Grey August 17, 2021
Dist Suse Esm H88
SUSE has released a Security Update for the Linux Kernel Live Patch, targeting two severe vulnerabilities impacting SLE 15 SP1 and additional versions.
An update that fixes two vulnerabilities is now available

Summary

This update for the Linux Kernel 4.12.14-197_99 fixes several issues. The following security issues were fixed: - CVE-2021-22543: Fixed an issue with KVM, related to the handling of VM_IO|VM_PFNMAP vmas, which allowed users with the ability to start and control a VM to read/write random pages of memory and could result in local privilege escalation (bsc#1186482). - CVE-2021-37576: On the powerpc platform KVM guest OS users could cause host OS memory corruption via rtas_args.nargs (bsc#1188838). 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-SP2:

Topics%20covered

Topics Covered

security advisory local privilege memory corruption important linux kernel live patch

References

#1186483 #1188842

Cross- CVE-2021-22543 CVE-2021-37576

CVSS scores:

CVE-2021-22543 (SUSE): 8.4 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVE-2021-37576 (SUSE): 8.4 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Products:

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-2021-22543.html

https://www.suse.com/security/cve/CVE-2021-37576.html

https://bugzilla.suse.com/1186483

https://bugzilla.suse.com/1188842

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2021:2695-1
Rating: important

Topics%20covered

Topics Covered

security advisory local privilege memory corruption important linux kernel live patch

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