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SUSE: 2021:3374-1 Important: Kernel Live Patch Local Escalation Risks

suse
Calendar Grey October 12, 2021
Scroller Suse
Kernel Live Patch 21 for SUSE Linux Enterprise 12 SP5 addresses three critical vulnerabilities related to local privilege escalation threats.
An update that fixes three vulnerabilities is now available

Summary

This update for the Linux Kernel 4.12.14-122_80 fixes several issues. The following security issues were fixed: - CVE-2021-38160: Fixed a bug that could lead to a data corruption or loss. This can be triggered by an untrusted device that supplies a buf->len value exceeding the buffer size in drivers/char/virtio_console.c (bsc#1190118) - CVE-2021-3640: Fixed a user-after-free bug in the function sco_sock_sendmsg which could lead to local privilege escalation. (bsc#1188613) - CVE-2021-3573: Fixed a user-after-free bug in the function hci_sock_bound_ioctl which could lead to local privilege escalation. (bsc#1187054). 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 update kernel patch important local escalation SUSE Linux live patching

References

#1187054 #1188613 #1190118

Cross- CVE-2021-3573 CVE-2021-3640 CVE-2021-38160

CVSS scores:

CVE-2021-3573 (SUSE): 8.4 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVE-2021-3640 (SUSE): 7.4 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CVE-2021-38160 (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 Module for Live Patching 15-SP3

SUSE Linux Enterprise Module for Live Patching 15-SP2

SUSE Linux Enterprise Module for Live Patching 15-SP1

SUSE Linux Enterprise Live Patching 12-SP5

SUSE Linux Enterprise Live Patching 12-SP4

https://www.suse.com/security/cve/CVE-2021-3573.html

https://www.suse.com/security/cve/CVE-2021-3640.html

https://www.suse.com/security/cve/CVE-2021-38160.html

https://bugzilla.suse.com/1187054

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2021:3374-1
Rating: important

Topics%20covered

Topics Covered

security advisory update kernel patch important local escalation SUSE Linux live patching

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