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SUSE: 2022:2515-1 Important Local Escalation And Memory Fix

suse
Calendar Grey July 21, 2022
Dist Suse Esm H88
The latest SUSE updates address critical vulnerabilities related to local privilege escalation and memory corruption issues within the Linux Kernel for SLE 15 SP3.
An update that fixes two vulnerabilities is now available

Summary

This update for the Linux Kernel 5.3.18-150300_59_71 fixes several issues. The following security issues were fixed: - CVE-2022-20154: Fixed a use after free due to a race condition in lock_sock_nested of sock.c. This could lead to local escalation of privilege with System execution privileges needed (bsc#1200599). - CVE-2021-39698: Fixed a possible memory corruption due to a use after free in aio_poll_complete_work. This could lead to local escalation of privilege with no additional execution privileges needed. (bsc#1196956) 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 local escalation important fix Linux Kernel

References

#1196959 #1200608

Cross- CVE-2021-39698 CVE-2022-20154

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-2022-20154 (NVD) : 6.4 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

CVE-2022-20154 (SUSE): 7 CVSS:3.1/AV:L/AC:H/PR:L/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-2022-20154.html

https://bugzilla.suse.com/1196959

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2022:2515-1
Rating: important

Topics%20covered

Topics Covered

security advisory memory corruption SUSE local escalation important fix Linux Kernel

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