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SUSE: 2021:3738-1 Critical: Linux Kernel Live Patch 0 Fixes Major Issues

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Calendar Grey November 19, 2021
Scroller Suse
Crucial SUSE Security Patch for Linux Kernel addressing three severe vulnerabilities in Live Patch 0 for SLE 15 SP4.
An update that fixes three vulnerabilities is now available

Summary

This update for the Linux Kernel 5.3.18-57 fixes several issues. The following security issues were fixed: - CVE-2021-3752: Fixed vulnerability in the linux kernel Bluetooth uaf module (bsc#1190432). - CVE-2021-34866: Fixed possible eBPF Type Confusion privilege escalation vulnerability via eBPF type confusion (bsc#1191646). - CVE-2021-41864: Fixed an integer overflow with a resultant out-of-bounds write in prealloc_elems_and_freelist in kernel/bpf/stackmap.c (bsc#1191318). 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 critical important system update SUSE Linux Kernel live patch

References

#1190432 #1191318 #1191646

Cross- CVE-2021-34866 CVE-2021-3752 CVE-2021-41864

CVSS scores:

CVE-2021-34866 (SUSE): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVE-2021-3752 (SUSE): 7.4 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CVE-2021-41864 (SUSE): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Products:

SUSE Linux Enterprise Module for Live Patching 15-SP3

https://www.suse.com/security/cve/CVE-2021-34866.html

https://www.suse.com/security/cve/CVE-2021-3752.html

https://www.suse.com/security/cve/CVE-2021-41864.html

https://bugzilla.suse.com/1190432

https://bugzilla.suse.com/1191318

https://bugzilla.suse.com/1191646

Severity
important
Lowest
Low
Medium
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Critical

Announcement ID: SUSE-SU-2021:3738-1
Rating: important

Topics%20covered

Topics Covered

security advisory critical important system update SUSE Linux Kernel live patch

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