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SUSE: 2020:2822-1 Critical: Fix for Xen Denial of Service Vulnerability

suse
Calendar Grey October 1, 2020
Dist Suse Esm H88
SUSE has issued a security update addressing 12 vulnerabilities in xen, which includes risks of denial of service and unauthorized access to hardware registers.
An update that fixes 12 vulnerabilities is now available

Summary

This update for xen fixes the following issues: - CVE-2020-25604: Fixed a race condition when migrating timers between x86 HVM vCPU-s (bsc#1176343,XSA-336) - CVE-2020-25595: Fixed an issue where PCI passthrough code was reading back hardware registers (bsc#1176344,XSA-337) - CVE-2020-25597: Fixed an issue where a valid event channels may not turn invalid (bsc#1176346,XSA-338) - CVE-2020-25596: Fixed a potential denial of service in x86 pv guest kernel via SYSENTER (bsc#1176345,XSA-339) - CVE-2020-25603: Fixed an issue due to missing barriers when accessing/allocating an event channel (bsc#1176347,XSA-340) - CVE-2020-25600: Fixed out of bounds event channels available to 32-bit x86 domains (bsc#1176348,XSA-342) - CVE-2020-25599: Fixed race conditions with evtchn_reset() (bsc#1176349,XSA-343)

Topics%20covered

Topics Covered

security advisory denial of service security issue software update important SUSE xen

References

#1172205 #1173378 #1173380 #1175534 #1176343

#1176344 #1176345 #1176346 #1176347 #1176348

#1176349 #1176350

Cross- CVE-2020-0543 CVE-2020-14364 CVE-2020-15565

CVE-2020-15567 CVE-2020-25595 CVE-2020-25596

CVE-2020-25597 CVE-2020-25599 CVE-2020-25600

CVE-2020-25601 CVE-2020-25603 CVE-2020-25604

Affected Products:

SUSE OpenStack Cloud 7

SUSE Linux Enterprise Server for SAP 12-SP2

SUSE Linux Enterprise Server 12-SP2-LTSS

SUSE Linux Enterprise Server 12-SP2-BCL

https://www.suse.com/security/cve/CVE-2020-0543.html

https://www.suse.com/security/cve/CVE-2020-14364.html

https://www.suse.com/security/cve/CVE-2020-15565.html

https://www.suse.com/security/cve/CVE-2020-15567.html

https://www.suse.com/security/cve/CVE-2020-25595.html

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2020:2822-1
Rating: important

Topics%20covered

Topics Covered

security advisory denial of service security issue software update important SUSE xen

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