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SUSE: 2022:1573-1 Critical: KVM Memory Corruption Fix Found

suse
Calendar Grey May 9, 2022
Dist Suse Esm H88
SUSE Security Patch for the Linux Kernel: Critical updates to mitigate significant security flaws.
An update that fixes two vulnerabilities is now available

Summary

This update for the Linux Kernel 5.3.18-150300_59_63 fixes several issues. The following security issues were fixed: - - CVE-2022-1158: Fixed KVM x86/mmu compare-and-exchange of gPTE via the user address (bsc#1198133) - - CVE-2021-39698: In aio_poll_complete_work of aio.c, there was a possible memory corruption due to a use after free. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. (bsc#1196959) 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 memory corruption SUSE Linux important update KVM

References

#1196959 #1198133

Cross- CVE-2021-39698 CVE-2022-1158

CVSS scores:

CVE-2021-39698 (NVD) : 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVE-2021-39698 (SUSE): 7.4 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CVE-2022-1158 (SUSE): 7.4 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Products:

SUSE Linux Enterprise High Performance Computing 15-SP3

SUSE Linux Enterprise Micro 5.1

SUSE Linux Enterprise Module for Live Patching 15-SP3

SUSE Linux Enterprise Server 15-SP3

SUSE Linux Enterprise Server for SAP Applications 15-SP3

https://www.suse.com/security/cve/CVE-2021-39698.html

https://www.suse.com/security/cve/CVE-2022-1158.html

https://bugzilla.suse.com/1196959

https://bugzilla.suse.com/1198133

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2022:1573-1
Rating: important

Topics%20covered

Topics Covered

security advisory memory corruption SUSE Linux important update KVM

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