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SUSE: 2021:0808-1 Important: Kernel Fix for Memory Corruption & Escalation

suse
Calendar Grey March 17, 2021
Dist Suse Esm H88
SUSE has released a Security Update targeting the Linux Kernel, resolving two significant vulnerabilities, thus enhancing stability in Live Patch 15 for SLE 15 SP3.
An update that fixes two vulnerabilities is now available

Summary

This update for the Linux Kernel 4.12.14-122_60 fixes several issues. The following security issues were fixed: - CVE-2020-29368: Fixed an issue in copy-on-write implementation which could have granted unintended write access because of a race condition in a THP mapcount check (bsc#1179664). - CVE-2020-27786: Fixed a potential user after free which could have led to memory corruption or privilege escalation (bsc#1179616). 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 Live Patching 12-SP5: zypper in -t patch SUSE-SLE-Live-Patching-12-SP5-2021-808=1 Package List:

Topics%20covered

Topics Covered

security advisory privilege escalation memory corruption important kernel fix SUSE live patching

References

#1179616 #1179664

Cross- CVE-2020-27786 CVE-2020-29368

CVSS scores:

CVE-2020-27786 (NVD) : 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVE-2020-27786 (SUSE): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVE-2020-29368 (NVD) : 7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CVE-2020-29368 (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 Live Patching 12-SP5

https://www.suse.com/security/cve/CVE-2020-27786.html

https://www.suse.com/security/cve/CVE-2020-29368.html

https://bugzilla.suse.com/1179616

https://bugzilla.suse.com/1179664

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2021:0808-1
Rating: important

Topics%20covered

Topics Covered

security advisory privilege escalation memory corruption important kernel fix SUSE live patching

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