ESB-2021.2291 – [SUSE] linux kernel: Multiple vulnerabilities

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AUSCERT External Security Bulletin Redistribution

ESB-2021.2291
Security update for the Linux Kernel (Live Patch 0 for SLE 15 SP3)
1 July 2021

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AusCERT Security Bulletin Summary
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Product: linux kernel
Publisher: SUSE
Operating System: SUSE
Impact/Access: Execute Arbitrary Code/Commands — Existing Account
Access Privileged Data — Existing Account
Create Arbitrary Files — Existing Account
Denial of Service — Existing Account
Reduced Security — Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2021-33034 CVE-2021-32399 CVE-2021-29154
CVE-2021-28950 CVE-2021-28660 CVE-2021-3490
CVE-2021-3489 CVE-2020-36322

Reference: ESB-2021.2184
ESB-2021.2136
ESB-2021.1962
ESB-2021.1819
ESB-2021.1669
ESB-2021.1376
ESB-2021.1307

Original Bulletin:
https://www.suse.com/support/update/announcement/2021/suse-su-20212198-1

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SUSE Security Update: Security update for the Linux Kernel (Live

______________________________________________________________________________

Announcement ID: SUSE-SU-2021:2198-1
Rating: important
References: #1183658 #1184710 #1184952 #1185796 #1185847 #1185856
#1185899 #1186285
Cross-References: CVE-2020-36322 CVE-2021-28660 CVE-2021-29154 CVE-2021-32399
CVE-2021-33034 CVE-2021-3489 CVE-2021-3490
Affected Products:
SUSE Linux Enterprise Module for Live Patching 15-SP3
______________________________________________________________________________

Patch 0 for
SLE 15 SP3)

An update that solves 7 vulnerabilities and has one errata is now available.

Description:

This update for the Linux Kernel 5.3.18-57 fixes several issues.
The following issues were fixed:

o CVE-2021-3489: Fixed an issue where the eBPF RINGBUF bpf_ringbuf_reserve
did not check that the allocated size was smaller than the ringbuf size
(bsc#1185640).
o CVE-2021-3490: Fixed an issue where the eBPF ALU32 bounds tracking for
bitwise ops (AND, OR and XOR) did not update the 32-bit bounds (bsc#
1185641).
o CVE-2021-33034: Fixed a use-after-free when destroying an hci_chan. This
could lead to writing an arbitrary values (bsc#1186111).
o CVE-2021-32399: Fixed a race condition when removing the HCI controller
(bsc#1184611).
o CVE-2020-36322: Fixed an issue was discovered in FUSE filesystem
implementation which could have caused a system crash (bsc#1184211).
o CVE-2021-29154: Fixed incorrect computation of branch displacements,
allowing arbitrary code execution (bsc#1184391).
o CVE-2021-28660: Fixed an out of bounds write in rtw_wx_set_scan (bsc#
1183593).
o Fixed a data loss/data corruption that occurs if there is a write error on
an md/raid array (bsc#1185847).

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-SP3-2021-2198=1

Package List:

o SUSE Linux Enterprise Module for Live Patching 15-SP3 (ppc64le s390x
x86_64):
kernel-livepatch-5_3_18-57-default-2-3.1
kernel-livepatch-5_3_18-57-default-debuginfo-2-3.1
kernel-livepatch-SLE15-SP3_Update_0-debugsource-2-3.1

References:

o https://www.suse.com/security/cve/CVE-2020-36322.html
o https://www.suse.com/security/cve/CVE-2021-28660.html
o https://www.suse.com/security/cve/CVE-2021-29154.html
o https://www.suse.com/security/cve/CVE-2021-32399.html
o https://www.suse.com/security/cve/CVE-2021-33034.html
o https://www.suse.com/security/cve/CVE-2021-3489.html
o https://www.suse.com/security/cve/CVE-2021-3490.html
o https://bugzilla.suse.com/1183658
o https://bugzilla.suse.com/1184710
o https://bugzilla.suse.com/1184952
o https://bugzilla.suse.com/1185796
o https://bugzilla.suse.com/1185847
o https://bugzilla.suse.com/1185856
o https://bugzilla.suse.com/1185899
o https://bugzilla.suse.com/1186285

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maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
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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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