Protect yourself against future threats.
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===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2021.4235
Security update for the Linux Kernel (Live Patch)
15 December 2021
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Linux Kernel
Publisher: SUSE
Operating System: SUSE
Impact/Access: Increased Privileges -- Existing Account
Denial of Service -- Remote/Unauthenticated
Access Confidential Data -- Remote/Unauthenticated
Reduced Security -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2021-28688 CVE-2021-20322 CVE-2021-0941
CVE-2021-0935
Reference: ESB-2021.4191
ESB-2021.4174
ESB-2021.4163
ESB-2021.4156
Original Bulletin:
https://www.suse.com/support/update/announcement/2021/suse-su-20214038-1
https://www.suse.com/support/update/announcement/2021/suse-su-20214090-1
https://www.suse.com/support/update/announcement/2021/suse-su-20214075-1
https://www.suse.com/support/update/announcement/2021/suse-su-20214057-1
https://www.suse.com/support/update/announcement/2021/suse-su-20214021-1
https://www.suse.com/support/update/announcement/2021/suse-su-20214039-1
https://www.suse.com/support/update/announcement/2021/suse-su-20214052-1
Comment: This bulletin contains six (7) SUSE security advisories.
- --------------------------BEGIN INCLUDED TEXT--------------------
SUSE Security Update: Security update for the Linux Kernel (Live Patch 23 for
SLE 15 SP1)
______________________________________________________________________________
Announcement ID: SUSE-SU-2021:4038-1
Rating: important
References: #1191813 #1192048
Cross-References: CVE-2021-0941 CVE-2021-20322
Affected Products:
SUSE Linux Enterprise Module for Live Patching 15-SP1
SUSE Linux Enterprise Module for Live Patching 15
SUSE Linux Enterprise Live Patching 12-SP5
SUSE Linux Enterprise Live Patching 12-SP4
______________________________________________________________________________
An update that fixes two vulnerabilities is now available.
Description:
This update for the Linux Kernel 4.12.14-197_86 fixes several issues.
The following security issues were fixed:
o CVE-2021-0941: In bpf_skb_change_head of filter.c, there is a possible out
of bounds read due to a use after free. This could lead to local escalation
of privilege with System execution privileges needed. User interaction is
not needed for exploitation (bnc#1192045).
o CVE-2021-20322: Make the ipv4 and ipv6 ICMP exception caches less
predictive to avoid information leaks about UDP ports in use. (bsc#1191790)
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-SP1:
zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP1-2021-4040=1
SUSE-SLE-Module-Live-Patching-15-SP1-2021-4041=1
SUSE-SLE-Module-Live-Patching-15-SP1-2021-4042=1
SUSE-SLE-Module-Live-Patching-15-SP1-2021-4043=1
SUSE-SLE-Module-Live-Patching-15-SP1-2021-4044=1
SUSE-SLE-Module-Live-Patching-15-SP1-2021-4045=1
SUSE-SLE-Module-Live-Patching-15-SP1-2021-4046=1
o SUSE Linux Enterprise Module for Live Patching 15:
zypper in -t patch SUSE-SLE-Module-Live-Patching-15-2021-4047=1
SUSE-SLE-Module-Live-Patching-15-2021-4048=1
SUSE-SLE-Module-Live-Patching-15-2021-4049=1
SUSE-SLE-Module-Live-Patching-15-2021-4050=1
o SUSE Linux Enterprise Live Patching 12-SP5:
zypper in -t patch SUSE-SLE-Live-Patching-12-SP5-2021-4022=1
SUSE-SLE-Live-Patching-12-SP5-2021-4023=1
SUSE-SLE-Live-Patching-12-SP5-2021-4024=1
SUSE-SLE-Live-Patching-12-SP5-2021-4025=1
SUSE-SLE-Live-Patching-12-SP5-2021-4026=1
SUSE-SLE-Live-Patching-12-SP5-2021-4027=1
SUSE-SLE-Live-Patching-12-SP5-2021-4028=1
SUSE-SLE-Live-Patching-12-SP5-2021-4029=1
SUSE-SLE-Live-Patching-12-SP5-2021-4030=1
SUSE-SLE-Live-Patching-12-SP5-2021-4031=1
SUSE-SLE-Live-Patching-12-SP5-2021-4032=1
SUSE-SLE-Live-Patching-12-SP5-2021-4033=1
o SUSE Linux Enterprise Live Patching 12-SP4:
zypper in -t patch SUSE-SLE-Live-Patching-12-SP4-2021-4034=1
SUSE-SLE-Live-Patching-12-SP4-2021-4035=1
SUSE-SLE-Live-Patching-12-SP4-2021-4036=1
SUSE-SLE-Live-Patching-12-SP4-2021-4037=1
SUSE-SLE-Live-Patching-12-SP4-2021-4038=1
Package List:
o SUSE Linux Enterprise Module for Live Patching 15-SP1 (ppc64le x86_64):
kernel-livepatch-4_12_14-197_75-default-14-2.2
kernel-livepatch-4_12_14-197_78-default-14-2.2
kernel-livepatch-4_12_14-197_83-default-13-2.2
kernel-livepatch-4_12_14-197_86-default-12-2.2
kernel-livepatch-4_12_14-197_89-default-9-2.1
kernel-livepatch-4_12_14-197_92-default-8-2.1
kernel-livepatch-4_12_14-197_99-default-6-2.1
o SUSE Linux Enterprise Module for Live Patching 15 (ppc64le x86_64):
kernel-livepatch-4_12_14-150_66-default-13-2.2
kernel-livepatch-4_12_14-150_66-default-debuginfo-13-2.2
kernel-livepatch-4_12_14-150_69-default-12-2.2
kernel-livepatch-4_12_14-150_69-default-debuginfo-12-2.2
kernel-livepatch-4_12_14-150_72-default-9-2.1
kernel-livepatch-4_12_14-150_72-default-debuginfo-9-2.1
kernel-livepatch-4_12_14-150_75-default-6-2.1
kernel-livepatch-4_12_14-150_75-default-debuginfo-6-2.1
o SUSE Linux Enterprise Live Patching 12-SP5 (ppc64le s390x x86_64):
kgraft-patch-4_12_14-122_54-default-14-2.2
kgraft-patch-4_12_14-122_57-default-14-2.2
kgraft-patch-4_12_14-122_60-default-13-2.2
kgraft-patch-4_12_14-122_63-default-12-2.2
kgraft-patch-4_12_14-122_66-default-10-2.1
kgraft-patch-4_12_14-122_71-default-9-2.1
kgraft-patch-4_12_14-122_74-default-7-2.1
kgraft-patch-4_12_14-122_77-default-7-2.1
kgraft-patch-4_12_14-122_80-default-6-2.1
kgraft-patch-4_12_14-122_83-default-5-2.1
kgraft-patch-4_12_14-122_88-default-3-2.1
kgraft-patch-4_12_14-122_91-default-3-2.1
o SUSE Linux Enterprise Live Patching 12-SP4 (ppc64le s390x x86_64):
kgraft-patch-4_12_14-95_68-default-13-2.2
kgraft-patch-4_12_14-95_71-default-12-2.2
kgraft-patch-4_12_14-95_74-default-9-2.1
kgraft-patch-4_12_14-95_77-default-8-2.1
kgraft-patch-4_12_14-95_80-default-6-2.1
References:
o https://www.suse.com/security/cve/CVE-2021-0941.html
o https://www.suse.com/security/cve/CVE-2021-20322.html
o https://bugzilla.suse.com/1191813
o https://bugzilla.suse.com/1192048
- ----------------------------------------------------------------------------------------------------
SUSE Security Update: Security update for the Linux Kernel (Live Patch 15 for
SLE 15 SP2)
______________________________________________________________________________
Announcement ID: SUSE-SU-2021:4090-1
Rating: important
References: #1191813 #1192048
Cross-References: CVE-2021-0941 CVE-2021-20322
Affected Products:
SUSE Linux Enterprise Module for Live Patching 15-SP2
______________________________________________________________________________
An update that fixes two vulnerabilities is now available.
Description:
This update for the Linux Kernel 5.3.18-24_53_4 fixes several issues.
The following security issues were fixed:
o CVE-2021-0941: In bpf_skb_change_head of filter.c, there is a possible out
of bounds read due to a use after free. This could lead to local escalation
of privilege with System execution privileges needed. User interaction is
not needed for exploitation (bnc#1192045).
o CVE-2021-20322: Make the ipv4 and ipv6 ICMP exception caches less
predictive to avoid information leaks about UDP ports in use. (bsc#1191790)
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-SP2-2021-4086=1
SUSE-SLE-Module-Live-Patching-15-SP2-2021-4089=1
SUSE-SLE-Module-Live-Patching-15-SP2-2021-4090=1
SUSE-SLE-Module-Live-Patching-15-SP2-2021-4091=1
SUSE-SLE-Module-Live-Patching-15-SP2-2021-4092=1
Package List:
o SUSE Linux Enterprise Module for Live Patching 15-SP2 (ppc64le s390x
x86_64):
kernel-livepatch-5_3_18-24_43-default-14-2.2
kernel-livepatch-5_3_18-24_43-default-debuginfo-14-2.2
kernel-livepatch-5_3_18-24_46-default-14-2.2
kernel-livepatch-5_3_18-24_46-default-debuginfo-14-2.2
kernel-livepatch-5_3_18-24_49-default-13-2.2
kernel-livepatch-5_3_18-24_49-default-debuginfo-13-2.2
kernel-livepatch-5_3_18-24_52-default-12-2.2
kernel-livepatch-5_3_18-24_52-default-debuginfo-12-2.2
kernel-livepatch-5_3_18-24_53_4-default-7-2.1
kernel-livepatch-5_3_18-24_53_4-default-debuginfo-7-2.1
kernel-livepatch-SLE15-SP2_Update_10-debugsource-13-2.2
kernel-livepatch-SLE15-SP2_Update_11-debugsource-12-2.2
kernel-livepatch-SLE15-SP2_Update_15-debugsource-7-2.1
kernel-livepatch-SLE15-SP2_Update_8-debugsource-14-2.2
kernel-livepatch-SLE15-SP2_Update_9-debugsource-14-2.2
References:
o https://www.suse.com/security/cve/CVE-2021-0941.html
o https://www.suse.com/security/cve/CVE-2021-20322.html
o https://bugzilla.suse.com/1191813
o https://bugzilla.suse.com/1192048
- ----------------------------------------------------------------------------------------------------
SUSE Security Update: Security update for the Linux Kernel (Live
______________________________________________________________________________
Announcement ID: SUSE-SU-2021:4075-1
Rating: important
References: #1191813
Cross-References: CVE-2021-20322
Affected Products:
SUSE Linux Enterprise Module for Live Patching 15-SP3
SUSE Linux Enterprise Module for Live Patching 15-SP2
______________________________________________________________________________
Patch 6 for
SLE 15 SP3)
An update that fixes one vulnerability is now available.
Description:
This update for the Linux Kernel 5.3.18-59_24 fixes one issue.
The following security issue was fixed:
o CVE-2021-20322: Make the ipv4 and ipv6 ICMP exception caches less
predictive to avoid information leaks about UDP ports in use. (bsc#1191790)
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-SP3:
zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP3-2021-4073=1
SUSE-SLE-Module-Live-Patching-15-SP3-2021-4074=1
SUSE-SLE-Module-Live-Patching-15-SP3-2021-4075=1
SUSE-SLE-Module-Live-Patching-15-SP3-2021-4076=1
SUSE-SLE-Module-Live-Patching-15-SP3-2021-4077=1
SUSE-SLE-Module-Live-Patching-15-SP3-2021-4078=1
SUSE-SLE-Module-Live-Patching-15-SP3-2021-4079=1
SUSE-SLE-Module-Live-Patching-15-SP3-2021-4080=1
o SUSE Linux Enterprise Module for Live Patching 15-SP2:
zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP2-2021-4072=1
SUSE-SLE-Module-Live-Patching-15-SP2-2021-4081=1
SUSE-SLE-Module-Live-Patching-15-SP2-2021-4082=1
SUSE-SLE-Module-Live-Patching-15-SP2-2021-4083=1
SUSE-SLE-Module-Live-Patching-15-SP2-2021-4084=1
SUSE-SLE-Module-Live-Patching-15-SP2-2021-4085=1
SUSE-SLE-Module-Live-Patching-15-SP2-2021-4087=1
SUSE-SLE-Module-Live-Patching-15-SP2-2021-4088=1
SUSE-SLE-Module-Live-Patching-15-SP2-2021-4093=1
Package List:
o SUSE Linux Enterprise Module for Live Patching 15-SP3 (ppc64le s390x
x86_64):
kernel-livepatch-5_3_18-59_10-default-7-2.1
kernel-livepatch-5_3_18-59_10-default-debuginfo-7-2.1
kernel-livepatch-5_3_18-59_13-default-7-2.1
kernel-livepatch-5_3_18-59_13-default-debuginfo-7-2.1
kernel-livepatch-5_3_18-59_16-default-6-2.1
kernel-livepatch-5_3_18-59_16-default-debuginfo-6-2.1
kernel-livepatch-5_3_18-59_19-default-5-2.1
kernel-livepatch-5_3_18-59_19-default-debuginfo-5-2.1
kernel-livepatch-5_3_18-59_24-default-3-2.1
kernel-livepatch-5_3_18-59_24-default-debuginfo-3-2.1
kernel-livepatch-5_3_18-59_27-default-3-2.1
kernel-livepatch-5_3_18-59_27-default-debuginfo-3-2.1
kernel-livepatch-5_3_18-59_34-default-2-2.1
kernel-livepatch-5_3_18-59_34-default-debuginfo-2-2.1
kernel-livepatch-5_3_18-59_5-default-7-2.1
kernel-livepatch-5_3_18-59_5-default-debuginfo-7-2.1
kernel-livepatch-SLE15-SP3_Update_1-debugsource-7-2.1
kernel-livepatch-SLE15-SP3_Update_2-debugsource-7-2.1
kernel-livepatch-SLE15-SP3_Update_3-debugsource-7-2.1
kernel-livepatch-SLE15-SP3_Update_4-debugsource-6-2.1
kernel-livepatch-SLE15-SP3_Update_5-debugsource-5-2.1
kernel-livepatch-SLE15-SP3_Update_6-debugsource-3-2.1
kernel-livepatch-SLE15-SP3_Update_7-debugsource-3-2.1
kernel-livepatch-SLE15-SP3_Update_9-debugsource-2-2.1
o SUSE Linux Enterprise Module for Live Patching 15-SP2 (ppc64le s390x
x86_64):
kernel-livepatch-5_3_18-24_61-default-9-2.1
kernel-livepatch-5_3_18-24_61-default-debuginfo-9-2.1
kernel-livepatch-5_3_18-24_64-default-9-2.1
kernel-livepatch-5_3_18-24_64-default-debuginfo-9-2.1
kernel-livepatch-5_3_18-24_67-default-7-2.1
kernel-livepatch-5_3_18-24_67-default-debuginfo-7-2.1
kernel-livepatch-5_3_18-24_70-default-7-2.1
kernel-livepatch-5_3_18-24_70-default-debuginfo-7-2.1
kernel-livepatch-5_3_18-24_75-default-6-2.1
kernel-livepatch-5_3_18-24_75-default-debuginfo-6-2.1
kernel-livepatch-5_3_18-24_78-default-5-2.1
kernel-livepatch-5_3_18-24_78-default-debuginfo-5-2.1
kernel-livepatch-5_3_18-24_83-default-3-2.1
kernel-livepatch-5_3_18-24_83-default-debuginfo-3-2.1
kernel-livepatch-5_3_18-24_86-default-3-2.1
kernel-livepatch-5_3_18-24_86-default-debuginfo-3-2.1
kernel-livepatch-5_3_18-24_93-default-2-2.1
kernel-livepatch-5_3_18-24_93-default-debuginfo-2-2.1
kernel-livepatch-SLE15-SP2_Update_12-debugsource-9-2.1
kernel-livepatch-SLE15-SP2_Update_13-debugsource-9-2.1
kernel-livepatch-SLE15-SP2_Update_14-debugsource-7-2.1
kernel-livepatch-SLE15-SP2_Update_16-debugsource-7-2.1
kernel-livepatch-SLE15-SP2_Update_17-debugsource-6-2.1
kernel-livepatch-SLE15-SP2_Update_18-debugsource-5-2.1
kernel-livepatch-SLE15-SP2_Update_19-debugsource-3-2.1
kernel-livepatch-SLE15-SP2_Update_20-debugsource-3-2.1
kernel-livepatch-SLE15-SP2_Update_21-debugsource-2-2.1
References:
o https://www.suse.com/security/cve/CVE-2021-20322.html
o https://bugzilla.suse.com/1191813
- ----------------------------------------------------------------------------------------------------
SUSE Security Update: Security update for the Linux Kernel (Live Patch 37 for
SLE 12 SP3)
______________________________________________________________________________
Announcement ID: SUSE-SU-2021:4057-1
Rating: important
References: #1191813
Cross-References: CVE-2021-20322
Affected Products:
SUSE Linux Enterprise Server for SAP 12-SP3
SUSE Linux Enterprise Server 12-SP3-LTSS
______________________________________________________________________________
An update that fixes one vulnerability is now available.
Description:
This update for the Linux Kernel 4.4.180-94_138 fixes one issue.
The following security issue was fixed:
o CVE-2021-20322: Make the ipv4 and ipv6 ICMP exception caches less
predictive to avoid information leaks about UDP ports in use. (bsc#1191790)
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 for SAP 12-SP3:
zypper in -t patch SUSE-SLE-SAP-12-SP3-2021-4053=1
SUSE-SLE-SAP-12-SP3-2021-4054=1 SUSE-SLE-SAP-12-SP3-2021-4055=1
SUSE-SLE-SAP-12-SP3-2021-4057=1
o SUSE Linux Enterprise Server 12-SP3-LTSS:
zypper in -t patch SUSE-SLE-SERVER-12-SP3-2021-4053=1
SUSE-SLE-SERVER-12-SP3-2021-4054=1 SUSE-SLE-SERVER-12-SP3-2021-4055=1
SUSE-SLE-SERVER-12-SP3-2021-4057=1
Package List:
o SUSE Linux Enterprise Server for SAP 12-SP3 (ppc64le x86_64):
kgraft-patch-4_4_180-94_138-default-13-2.2
kgraft-patch-4_4_180-94_138-default-debuginfo-13-2.2
kgraft-patch-4_4_180-94_141-default-12-2.2
kgraft-patch-4_4_180-94_141-default-debuginfo-12-2.2
kgraft-patch-4_4_180-94_144-default-9-2.1
kgraft-patch-4_4_180-94_144-default-debuginfo-9-2.1
kgraft-patch-4_4_180-94_147-default-6-2.1
kgraft-patch-4_4_180-94_147-default-debuginfo-6-2.1
o SUSE Linux Enterprise Server 12-SP3-LTSS (ppc64le x86_64):
kgraft-patch-4_4_180-94_138-default-13-2.2
kgraft-patch-4_4_180-94_138-default-debuginfo-13-2.2
kgraft-patch-4_4_180-94_141-default-12-2.2
kgraft-patch-4_4_180-94_141-default-debuginfo-12-2.2
kgraft-patch-4_4_180-94_144-default-9-2.1
kgraft-patch-4_4_180-94_144-default-debuginfo-9-2.1
kgraft-patch-4_4_180-94_147-default-6-2.1
kgraft-patch-4_4_180-94_147-default-debuginfo-6-2.1
References:
o https://www.suse.com/security/cve/CVE-2021-20322.html
o https://bugzilla.suse.com/1191813
- ----------------------------------------------------------------------------------------------------
SUSE Security Update: Security update for the Linux Kernel (Live Patch 25 for
SLE 12 SP5)
______________________________________________________________________________
Announcement ID: SUSE-SU-2021:4021-1
Rating: important
References: #1191813 #1192042 #1192048
Cross-References: CVE-2021-0935 CVE-2021-0941 CVE-2021-20322
Affected Products:
SUSE Linux Enterprise Live Patching 12-SP5
______________________________________________________________________________
An update that fixes three vulnerabilities is now available.
Description:
This update for the Linux Kernel 4.12.14-122_98 fixes several issues.
The following security issues were fixed:
o CVE-2021-0941: In bpf_skb_change_head of filter.c, there is a possible out
of bounds read due to a use after free. This could lead to local escalation
of privilege with System execution privileges needed. User interaction is
not needed for exploitation (bnc#1192045).
o CVE-2021-20322: Make the ipv4 and ipv6 ICMP exception caches less
predictive to avoid information leaks about UDP ports in use. (bsc#1191790)
o CVE-2021-0935: In ip6_xmit of ip6_output.c, there is a possible out of
bounds write due to a use after free. This could lead to local escalation
of privilege with System execution privileges needed. User interaction is
not needed for exploitation. (bsc#1192032)
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 Live Patching 12-SP5:
zypper in -t patch SUSE-SLE-Live-Patching-12-SP5-2021-4021=1
Package List:
o SUSE Linux Enterprise Live Patching 12-SP5 (ppc64le s390x x86_64):
kgraft-patch-4_12_14-122_98-default-2-2.1
References:
o https://www.suse.com/security/cve/CVE-2021-0935.html
o https://www.suse.com/security/cve/CVE-2021-0941.html
o https://www.suse.com/security/cve/CVE-2021-20322.html
o https://bugzilla.suse.com/1191813
o https://bugzilla.suse.com/1192042
o https://bugzilla.suse.com/1192048
- ----------------------------------------------------------------------------------------------------
SUSE Security Update: Security update for the Linux Kernel (Live Patch 27 for
SLE 15 SP1)
______________________________________________________________________________
Announcement ID: SUSE-SU-2021:4039-1
Rating: important
References: #1192042
Cross-References: CVE-2021-0935
Affected Products:
SUSE Linux Enterprise Module for Live Patching 15-SP1
SUSE Linux Enterprise Live Patching 12-SP5
______________________________________________________________________________
An update that fixes one vulnerability is now available.
Description:
This update for the Linux Kernel 4.12.14-197_102 fixes one issue.
The following security issue was fixed:
o CVE-2021-0935: In ip6_xmit of ip6_output.c, there is a possible out of
bounds write due to a use after free. This could lead to local escalation
of privilege with System execution privileges needed. User interaction is
not needed for exploitation. (bsc#1192032)
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-SP1:
zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP1-2021-4039=1
o SUSE Linux Enterprise Live Patching 12-SP5:
zypper in -t patch SUSE-SLE-Live-Patching-12-SP5-2021-4020=1
Package List:
o SUSE Linux Enterprise Module for Live Patching 15-SP1 (ppc64le x86_64):
kernel-livepatch-4_12_14-197_102-default-2-2.1
o SUSE Linux Enterprise Live Patching 12-SP5 (ppc64le s390x x86_64):
kgraft-patch-4_12_14-122_103-default-2-2.1
References:
o https://www.suse.com/security/cve/CVE-2021-0935.html
o https://bugzilla.suse.com/1192042
- ----------------------------------------------------------------------------------------------------
SUSE Security Update: Security update for the Linux Kernel (Live Patch 41 for
SLE 12 SP3)
______________________________________________________________________________
Announcement ID: SUSE-SU-2021:4052-1
Rating: important
References: #1182294 #1192042
Cross-References: CVE-2021-0935 CVE-2021-28688
Affected Products:
SUSE Linux Enterprise Server for SAP 12-SP3
SUSE Linux Enterprise Server 12-SP3-LTSS
______________________________________________________________________________
An update that fixes two vulnerabilities is now available.
Description:
This update for the Linux Kernel 4.4.180-94_150 fixes several issues.
The following security issues were fixed:
o CVE-2021-0935: In ip6_xmit of ip6_output.c, there is a possible out of
bounds write due to a use after free. This could lead to local escalation
of privilege with System execution privileges needed. User interaction is
not needed for exploitation. (bsc#1192032)
o CVE-2021-28688: The fix for XSA-365 includes initialization of pointers
such that subsequent cleanup code wouldn't use uninitialized or stale
values. This initialization went too far and may under certain conditions
also overwrite pointers which are in need of cleaning up. The lack of
cleanup would result in leaking persistent grants. The leak in turn would
prevent fully cleaning up after a respective guest has died, leaving around
zombie domains. (bsc#1183646)
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 for SAP 12-SP3:
zypper in -t patch SUSE-SLE-SAP-12-SP3-2021-4052=1
o SUSE Linux Enterprise Server 12-SP3-LTSS:
zypper in -t patch SUSE-SLE-SERVER-12-SP3-2021-4052=1
Package List:
o SUSE Linux Enterprise Server for SAP 12-SP3 (ppc64le x86_64):
kgraft-patch-4_4_180-94_150-default-2-2.1
kgraft-patch-4_4_180-94_150-default-debuginfo-2-2.1
o SUSE Linux Enterprise Server 12-SP3-LTSS (ppc64le x86_64):
kgraft-patch-4_4_180-94_150-default-2-2.1
kgraft-patch-4_4_180-94_150-default-debuginfo-2-2.1
References:
o https://www.suse.com/security/cve/CVE-2021-0935.html
o https://www.suse.com/security/cve/CVE-2021-28688.html
o https://bugzilla.suse.com/1182294
o https://bugzilla.suse.com/1192042
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