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AUSCERT External Security Bulletin Redistribution
ESB-2021.1212
Security update for the Linux Kernel (Live Patch 36 for SLE 12 SP2)
13 April 2021
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Linux Kernel
Publisher: SUSE
Operating System: SUSE
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
Increased Privileges -- Existing Account
Denial of Service -- Existing Account
Access Confidential Data -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2021-27365 CVE-2021-27364 CVE-2021-27363
CVE-2020-25645 CVE-2020-1749 CVE-2020-0429
Reference: ESB-2021.1159
ESB-2021.1152
ESB-2021.0955
Original Bulletin:
https://www.suse.com/support/update/announcement/2021/suse-su-20211145-1
https://www.suse.com/support/update/announcement/2021/suse-su-20211148-1
Comment: This bulletin contains two (2) SUSE security advisories.
- --------------------------BEGIN INCLUDED TEXT--------------------
SUSE Security Update: Security update for the Linux Kernel (Live Patch 36 for
SLE 12 SP2)
______________________________________________________________________________
Announcement ID: SUSE-SU-2021:1145-1
Rating: important
References: #1182717 #1183120 #1183491
Cross-References: CVE-2021-27363 CVE-2021-27364 CVE-2021-27365
Affected Products:
SUSE Linux Enterprise Server 12-SP2-LTSS-SAP
SUSE Linux Enterprise Server 12-SP2-LTSS-ERICSSON
______________________________________________________________________________
An update that fixes three vulnerabilities is now available.
Description:
This update for the Linux Kernel 4.4.121-92_138 fixes several issues.
The following security issues were fixed:
o CVE-2021-27365: Fixed an issue where data structures did not have
appropriate length constraints or checks, and could exceed the PAGE_SIZE
value (bsc#1183491).
o CVE-2021-27363: Fixed a kernel pointer leak which could have been used to
determine the address of the iscsi_transport structure (bsc#1183120).
o CVE-2021-27364: Fixed an issue where an unprivileged user could craft
Netlink messages (bsc#1182717).
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 Server 12-SP2-LTSS-SAP:
zypper in -t patch SUSE-SLE-SERVER-12-SP2-LTSS-SAP-2021-1142=1
SUSE-SLE-SERVER-12-SP2-LTSS-SAP-2021-1143=1
SUSE-SLE-SERVER-12-SP2-LTSS-SAP-2021-1144=1
SUSE-SLE-SERVER-12-SP2-LTSS-SAP-2021-1145=1
SUSE-SLE-SERVER-12-SP2-LTSS-SAP-2021-1146=1
SUSE-SLE-SERVER-12-SP2-LTSS-SAP-2021-1147=1
o SUSE Linux Enterprise Server 12-SP2-LTSS-ERICSSON:
zypper in -t patch SUSE-SLE-SERVER-12-SP2-LTSS-ERICSSON-2021-1142=1
SUSE-SLE-SERVER-12-SP2-LTSS-ERICSSON-2021-1143=1
SUSE-SLE-SERVER-12-SP2-LTSS-ERICSSON-2021-1144=1
SUSE-SLE-SERVER-12-SP2-LTSS-ERICSSON-2021-1145=1
SUSE-SLE-SERVER-12-SP2-LTSS-ERICSSON-2021-1146=1
SUSE-SLE-SERVER-12-SP2-LTSS-ERICSSON-2021-1147=1
Package List:
o SUSE Linux Enterprise Server 12-SP2-LTSS-SAP (x86_64):
kgraft-patch-4_4_121-92_129-default-10-2.2
kgraft-patch-4_4_121-92_135-default-8-2.2
kgraft-patch-4_4_121-92_138-default-8-2.2
kgraft-patch-4_4_121-92_141-default-7-2.2
kgraft-patch-4_4_121-92_146-default-5-2.2
kgraft-patch-4_4_121-92_149-default-3-2.2
o SUSE Linux Enterprise Server 12-SP2-LTSS-ERICSSON (x86_64):
kgraft-patch-4_4_121-92_129-default-10-2.2
kgraft-patch-4_4_121-92_135-default-8-2.2
kgraft-patch-4_4_121-92_138-default-8-2.2
kgraft-patch-4_4_121-92_141-default-7-2.2
kgraft-patch-4_4_121-92_146-default-5-2.2
kgraft-patch-4_4_121-92_149-default-3-2.2
References:
o https://www.suse.com/security/cve/CVE-2021-27363.html
o https://www.suse.com/security/cve/CVE-2021-27364.html
o https://www.suse.com/security/cve/CVE-2021-27365.html
o https://bugzilla.suse.com/1182717
o https://bugzilla.suse.com/1183120
o https://bugzilla.suse.com/1183491
- --------------------------------------------------------------------------------
SUSE Security Update: Security update for the Linux Kernel (Live Patch 40 for
SLE 12 SP2)
______________________________________________________________________________
Announcement ID: SUSE-SU-2021:1148-1
Rating: important
References: #1165631 #1176931 #1177513 #1182717 #1183120 #1183491
Cross-References: CVE-2020-0429 CVE-2020-1749 CVE-2020-25645 CVE-2021-27363
CVE-2021-27364 CVE-2021-27365
Affected Products:
SUSE Linux Enterprise Server 12-SP2-LTSS-SAP
SUSE Linux Enterprise Server 12-SP2-LTSS-ERICSSON
______________________________________________________________________________
An update that fixes 6 vulnerabilities is now available.
Description:
This update for the Linux Kernel 4.4.121-92_152 fixes several issues.
The following security issues were fixed:
o CVE-2021-27365: Fixed an issue where data structures did not have
appropriate length constraints or checks, and could exceed the PAGE_SIZE
value (bsc#1183491).
o CVE-2021-27363: Fixed a kernel pointer leak which could have been used to
determine the address of the iscsi_transport structure (bsc#1183120).
o CVE-2021-27364: Fixed an issue where an unprivileged user could craft
Netlink messages (bsc#1182717).
o CVE-2020-25645: Fixed an an issue in IPsec that caused traffic between two
Geneve endpoints to be unencrypted (bsc#1177513).
o CVE-2020-0429: Fixed a memory corruption due to a use after free which
could have led to local escalation of privilege with System execution
privileges needed (bsc#1176931).
o CVE-2020-1749: Use ip6_dst_lookup_flow instead of ip6_dst_lookup (bsc#
1165631).
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 Server 12-SP2-LTSS-SAP:
zypper in -t patch SUSE-SLE-SERVER-12-SP2-LTSS-SAP-2021-1148=1
o SUSE Linux Enterprise Server 12-SP2-LTSS-ERICSSON:
zypper in -t patch SUSE-SLE-SERVER-12-SP2-LTSS-ERICSSON-2021-1148=1
Package List:
o SUSE Linux Enterprise Server 12-SP2-LTSS-SAP (x86_64):
kgraft-patch-4_4_121-92_152-default-2-2.2
o SUSE Linux Enterprise Server 12-SP2-LTSS-ERICSSON (x86_64):
kgraft-patch-4_4_121-92_152-default-2-2.2
References:
o https://www.suse.com/security/cve/CVE-2020-0429.html
o https://www.suse.com/security/cve/CVE-2020-1749.html
o https://www.suse.com/security/cve/CVE-2020-25645.html
o https://www.suse.com/security/cve/CVE-2021-27363.html
o https://www.suse.com/security/cve/CVE-2021-27364.html
o https://www.suse.com/security/cve/CVE-2021-27365.html
o https://bugzilla.suse.com/1165631
o https://bugzilla.suse.com/1176931
o https://bugzilla.suse.com/1177513
o https://bugzilla.suse.com/1182717
o https://bugzilla.suse.com/1183120
o https://bugzilla.suse.com/1183491
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You have received this e-mail bulletin as a result of your organisation's
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receiving these bulletins you should contact your local IT manager. If
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NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members. As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.
NOTE: This is only the original release of the security bulletin. It may
not be updated when updates to the original are made. If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.
Contact information for the authors of the original document is included
in the Security Bulletin above. If you have any questions or need further
information, please contact them directly.
Previous advisories and external security bulletins can be retrieved from:
https://www.auscert.org.au/bulletins/
===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072
Internet Email: auscert@auscert.org.au
Facsimile: (07) 3365 7031
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
AusCERT personnel answer during Queensland business hours
which are GMT+10:00 (AEST).
On call after hours for member emergencies only.
===========================================================================
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