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AUSCERT External Security Bulletin Redistribution
ESB-2021.0527
Security update for the Linux Kernel (Live Patch 3 for SLE 15 SP2)
12 February 2021
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AusCERT Security Bulletin Summary
---------------------------------
Product: Linux Kernel
Publisher: SUSE
Operating System: SUSE
Impact/Access: Root Compromise -- Existing Account
Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Denial of Service -- Existing Account
Access Confidential Data -- Existing Account
Unauthorised Access -- Existing Account
Reduced Security -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2020-36158 CVE-2020-29661 CVE-2020-29660
CVE-2020-29569 CVE-2020-29373 CVE-2020-29368
CVE-2020-0466 CVE-2020-0465
Reference: ESB-2021.0501
ESB-2021.0377
ESB-2020.4417
Original Bulletin:
https://www.suse.com/support/update/announcement/2021/suse-su-20210367-1
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_____________________________________________________________________________
Announcement ID: SUSE-SU-2021:0367-1
Rating: important
References: #1179664 #1179779 #1179877 #1180008 #1180030 #1180032
#1180562
Cross-References: CVE-2020-0465 CVE-2020-0466 CVE-2020-29368 CVE-2020-29373
CVE-2020-29569 CVE-2020-29660 CVE-2020-29661 CVE-2020-36158
Affected Products:
SUSE Linux Enterprise Module for Live Patching 15-SP2
______________________________________________________________________________
Patch 3 for
SLE 15 SP2)
An update that fixes 8 vulnerabilities is now available.
Description:
This update for the Linux Kernel 5.3.18-24_15 fixes several issues.
The following security issues were fixed:
o CVE-2020-29373: Fixed an issue where kernel unsafely handles the root
directory during path lookups, and thus a process inside a mount namespace
can escape to unintended filesystem locations (bsc#1179779).
o CVE-2020-36158: Fixed a potential remote code execution in the Marvell
mwifiex driver (bsc#1180562).
o CVE-2020-0465: Fixed multiple missing bounds checks in hid-multitouch.c
that could have led to local privilege escalation (bnc#1180030).
o CVE-2020-0466: Fixed a use-after-free due to a logic error in do_epoll_ctl
and ep_loop_check_proc of eventpoll.c (bnc#1180032.
o CVE-2020-29569: Fixed a use after free due to a logic error (bsc#1180008).
o CVE-2020-29660: Fixed a locking inconsistency in the tty subsystem that may
have allowed a read-after-free attack against TIOCGSID (bsc#1179877).
o CVE-2020-29661: Fixed a locking issue in the tty subsystem that allowed a
use-after-free attack against TIOCSPGRP (bsc#1179877).
o CVE-2020-29368: Fixed an issue in copy-on-write implementation which could
grant unintended write access because of a race condition in a THP mapcount
check (bsc#1179664).
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:
o SUSE Linux Enterprise Module for Live Patching 15-SP2:
zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP2-2021-365=1
SUSE-SLE-Module-Live-Patching-15-SP2-2021-366=1
SUSE-SLE-Module-Live-Patching-15-SP2-2021-367=1
SUSE-SLE-Module-Live-Patching-15-SP2-2021-368=1
Package List:
o SUSE Linux Enterprise Module for Live Patching 15-SP2 (ppc64le s390x
x86_64):
kernel-livepatch-5_3_18-22-default-7-5.2
kernel-livepatch-5_3_18-22-default-debuginfo-7-5.2
kernel-livepatch-5_3_18-24_12-default-5-2.1
kernel-livepatch-5_3_18-24_12-default-debuginfo-5-2.1
kernel-livepatch-5_3_18-24_15-default-5-2.1
kernel-livepatch-5_3_18-24_15-default-debuginfo-5-2.1
kernel-livepatch-5_3_18-24_9-default-6-2.1
kernel-livepatch-5_3_18-24_9-default-debuginfo-6-2.1
kernel-livepatch-SLE15-SP2_Update_0-debugsource-7-5.2
kernel-livepatch-SLE15-SP2_Update_1-debugsource-6-2.1
kernel-livepatch-SLE15-SP2_Update_2-debugsource-5-2.1
kernel-livepatch-SLE15-SP2_Update_3-debugsource-5-2.1
References:
o https://www.suse.com/security/cve/CVE-2020-0465.html
o https://www.suse.com/security/cve/CVE-2020-0466.html
o https://www.suse.com/security/cve/CVE-2020-29368.html
o https://www.suse.com/security/cve/CVE-2020-29373.html
o https://www.suse.com/security/cve/CVE-2020-29569.html
o https://www.suse.com/security/cve/CVE-2020-29660.html
o https://www.suse.com/security/cve/CVE-2020-29661.html
o https://www.suse.com/security/cve/CVE-2020-36158.html
o https://bugzilla.suse.com/1179664
o https://bugzilla.suse.com/1179779
o https://bugzilla.suse.com/1179877
o https://bugzilla.suse.com/1180008
o https://bugzilla.suse.com/1180030
o https://bugzilla.suse.com/1180032
o https://bugzilla.suse.com/1180562
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