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SUSE: 2021:2027-1 Important: Kernel Live Patch 13 Critical Security Fix

suse
Calendar Grey June 18, 2021
Scroller Suse
SUSE Security Notification: Kernel Live Patch 14 for SLE 15 SP3 addresses significant vulnerabilities and implements corrections for security weaknesses.
An update that solves three vulnerabilities and has one errata is now available

Summary

This update for the Linux Kernel 5.3.18-24_64 fixes several issues. The following issues were fixed: - CVE-2021-33200: Enforcing incorrect limits for pointer arithmetic operations by the BPF verifier could be abused to perform out-of-bounds reads and writes in kernel memory (bsc#1186484). - CVE-2021-33034: Fixed a use-after-free when destroying an hci_chan. This could lead to writing an arbitrary values (bsc#1186111). - CVE-2021-23134: A Use After Free vulnerability in nfc sockets allowed local attackers to elevate their privileges (bnc#1186060). - Fixed a data loss/data corruption that occurs if there is a write error on an md/raid array (bsc#1185680). Patch Instructions: To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

Topics%20covered

Topics Covered

security advisory kernel update security fix important suse linux kernel live patch

References

#1185847 #1186061 #1186285 #1186498

Cross- CVE-2021-23134 CVE-2021-33034 CVE-2021-33200

CVSS scores:

CVE-2021-23134 (NVD) : 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVE-2021-23134 (SUSE): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVE-2021-33034 (NVD) : 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVE-2021-33034 (SUSE): 7.7 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

CVE-2021-33200 (NVD) : 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVE-2021-33200 (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

https://www.suse.com/security/cve/CVE-2021-23134.html

https://www.suse.com/security/cve/CVE-2021-33034.html

Severity
important
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Announcement ID: SUSE-SU-2021:2027-1
Rating: important

Topics%20covered

Topics Covered

security advisory kernel update security fix important suse linux kernel live patch

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