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AUSCERT External Security Bulletin Redistribution
ESB-2021.0552
Security update for the Linux Kernel
15 February 2021
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Linux Kernel
Publisher: SUSE
Operating System: SUSE
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Root Compromise -- Existing Account
Access Privileged Data -- Existing Account
Denial of Service -- Existing Account
Access Confidential Data -- Existing Account
Unauthorised Access -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2021-3347 CVE-2020-36158 CVE-2020-29661
CVE-2020-29660 CVE-2020-29569 CVE-2020-29568
CVE-2020-28974 CVE-2020-28915 CVE-2020-27825
CVE-2020-27786 CVE-2020-27777 CVE-2020-27673
CVE-2020-27068 CVE-2020-25669 CVE-2020-25668
CVE-2020-25285 CVE-2020-25211 CVE-2020-15437
CVE-2020-15436 CVE-2020-11668 CVE-2020-0466
CVE-2020-0465 CVE-2020-0444 CVE-2019-20934
CVE-2019-19063 CVE-2019-6133
Reference: ESB-2021.0543
ESB-2021.0525
ESB-2021.0365
Original Bulletin:
https://www.suse.com/support/update/announcement/2021/suse-su-20210437-1
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SUSE Security Update: Security update for the Linux Kernel
______________________________________________________________________________
Announcement ID: SUSE-SU-2021:0437-1
Rating: important
References: #1070943 #1121826 #1121872 #1157298 #1168952 #1173942
#1176395 #1176485 #1177411 #1178123 #1178182 #1178589
#1178622 #1178886 #1179107 #1179140 #1179141 #1179204
#1179419 #1179508 #1179509 #1179601 #1179616 #1179663
#1179666 #1179745 #1179877 #1179960 #1179961 #1180008
#1180027 #1180028 #1180029 #1180030 #1180031 #1180032
#1180052 #1180086 #1180559 #1180562 #1181349 #969755
Cross-References: CVE-2019-19063 CVE-2019-20934 CVE-2019-6133 CVE-2020-0444
CVE-2020-0465 CVE-2020-0466 CVE-2020-11668 CVE-2020-15436
CVE-2020-15437 CVE-2020-25211 CVE-2020-25285 CVE-2020-25668
CVE-2020-25669 CVE-2020-27068 CVE-2020-27673 CVE-2020-27777
CVE-2020-27786 CVE-2020-27825 CVE-2020-28915 CVE-2020-28974
CVE-2020-29568 CVE-2020-29569 CVE-2020-29660 CVE-2020-29661
CVE-2020-36158 CVE-2021-3347
Affected Products:
SUSE OpenStack Cloud 7
SUSE Linux Enterprise Server for SAP 12-SP2
SUSE Linux Enterprise Server 12-SP2-LTSS
SUSE Linux Enterprise Server 12-SP2-BCL
SUSE Linux Enterprise High Availability 12-SP2
______________________________________________________________________________
An update that solves 26 vulnerabilities and has 16 fixes is now available.
Description:
The SUSE Linux Enterprise 12 SP2 kernel was updated to receive various security
and bugfixes.
The following security bugs were fixed:
o CVE-2021-3347: A use-after-free was discovered in the PI futexes during
fault handling, allowing local users to execute code in the kernel (bnc#
1181349).
o CVE-2020-29569: Fixed a potential privilege escalation and information
leaks related to the PV block backend, as used by Xen (bnc#1179509).
o CVE-2020-29568: Fixed a denial of service issue, related to processing
watch events (bnc#1179508).
o CVE-2020-25211: Fixed a flaw where a local attacker was able to inject
conntrack netlink configuration that could cause a denial of service or
trigger the use of incorrect protocol numbers in
ctnetlink_parse_tuple_filter (bnc#1176395).
o CVE-2020-0444: Fixed a bad kfree due to a logic error in
audit_data_to_entry (bnc#1180027).
o CVE-2020-0465: Fixed multiple missing bounds checks in hid-multitouch.c
that could have led to local privilege escalation (bnc#1180029).
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#1180031).
o CVE-2020-15436: Fixed a use after free vulnerability in fs/block_dev.c
which could have allowed local users to gain privileges or cause a denial
of service (bsc#1179141).
o CVE-2020-27068: Fixed an out-of-bounds read due to a missing bounds check
in the nl80211_policy policy of nl80211.c (bnc#1180086).
o CVE-2020-27777: Fixed a privilege escalation in the Run-Time Abstraction
Services (RTAS) interface, affecting guests running on top of PowerVM or
KVM hypervisors (bnc#1179107).
o CVE-2020-27786: Fixed an out-of-bounds write in the MIDI implementation
(bnc#1179601).
o CVE-2020-27825: Fixed a race in the trace_open and buffer resize calls (bsc
#1179960).
o CVE-2020-29660: Fixed a locking inconsistency in the tty subsystem that may
have allowed a read-after-free attack against TIOCGSID (bnc#1179745).
o CVE-2020-29661: Fixed a locking issue in the tty subsystem that allowed a
use-after-free attack against TIOCSPGRP (bsc#1179745).
o CVE-2020-28974: Fixed a slab-out-of-bounds read in fbcon which could have
been used by local attackers to read privileged information or potentially
crash the kernel (bsc#1178589).
o CVE-2020-28915: Fixed a buffer over-read in the fbcon code which could have
been used by local attackers to read kernel memory (bsc#1178886).
o CVE-2020-25669: Fixed a use-after-free read in sunkbd_reinit() (bsc#
1178182).
o CVE-2020-25285: A race condition between hugetlb sysctl handlers in mm/
hugetlb.c could be used by local attackers to corrupt memory, cause a NULL
pointer dereference, or possibly have unspecified other impact (bnc#1176485
).
o CVE-2020-15437: Fixed a null pointer dereference which could have allowed
local users to cause a denial of service (bsc#1179140).
o CVE-2020-36158: Fixed a potential remote code execution in the Marvell
mwifiex driver (bsc#1180559).
o CVE-2020-11668: Fixed the mishandling of invalid descriptors in the Xirlink
camera USB driver (bnc#1168952).
o CVE-2020-25668: Fixed a use-after-free in con_font_op() (bsc#1178123).
o CVE-2020-27673: Fixed an issue where rogue guests could have caused denial
of service of Dom0 via high frequency events (XSA-332 bsc#1177411)
o CVE-2019-20934: Fixed a use-after-free in show_numa_stats() because NUMA
fault statistics were inappropriately freed (bsc#1179663).
o CVE-2019-19063: Fixed two memory leaks in the rtl_usb_probe() which could
eventually have allowed attackers to cause a denial of service (memory
consumption) (bnc#1157298 ).
o CVE-2019-6133: Fixed an issue where the "start time" protection mechanism
could have been bypassed and therefore authorization decisions are
improperly cached (bsc#1128172).
The following non-security bugs were fixed:
o HID: Fix slab-out-of-bounds read in hid_field_extract (bsc#1180052).
o epoll: Keep a reference on files added to the check list (bsc#1180031).
o fix regression in "epoll: Keep a reference on files added to the check
list" (bsc#1180031, git-fixes).
o futex,rt_mutex: Fix rt_mutex_cleanup_proxy_lock() (bsc#969755).
o futex,rt_mutex: Introduce rt_mutex_init_waiter() (bsc#969755).
o futex,rt_mutex: Provide futex specific rt_mutex API (bsc#969755).
o futex,rt_mutex: Restructure rt_mutex_finish_proxy_lock() (bsc#969755).
o futex: Avoid freeing an active timer (bsc#969755).
o futex: Avoid violating the 10th rule of futex (bsc#969755).
o futex: Change locking rules (bsc#969755).
o futex: Do not enable IRQs unconditionally in put_pi_state() (bsc#969755).
o futex: Drop hb->lock before enqueueing on the rtmutex (bsc#969755).
o futex: Fix OWNER_DEAD fixup (bsc#969755).
o futex: Fix incorrect should_fail_futex() handling (bsc#969755).
o futex: Fix more put_pi_state() vs. exit_pi_state_list() races (bsc#969755).
o futex: Fix pi_state->owner serialization (bsc#969755).
o futex: Fix small (and harmless looking) inconsistencies (bsc#969755).
o futex: Futex_unlock_pi() determinism (bsc#969755).
o futex: Handle early deadlock return correctly (bsc#969755).
o futex: Handle transient "ownerless" rtmutex state correctly (bsc#969755).
o futex: Pull rt_mutex_futex_unlock() out from under hb->lock (bsc#969755).
o futex: Rework futex_lock_pi() to use rt_mutex_*_proxy_lock() (bsc#969755).
o futex: Rework inconsistent rt_mutex/futex_q state (bsc#969755).
o locking/futex: Allow low-level atomic operations to return -EAGAIN (bsc#
969755).
o mm/userfaultfd: do not access vma->vm_mm after calling handle_userfault()
(bsc#1179204).
Special Instructions and Notes:
Please reboot the system after installing this update.
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 OpenStack Cloud 7:
zypper in -t patch SUSE-OpenStack-Cloud-7-2021-437=1
o SUSE Linux Enterprise Server for SAP 12-SP2:
zypper in -t patch SUSE-SLE-SAP-12-SP2-2021-437=1
o SUSE Linux Enterprise Server 12-SP2-LTSS:
zypper in -t patch SUSE-SLE-SERVER-12-SP2-2021-437=1
o SUSE Linux Enterprise Server 12-SP2-BCL:
zypper in -t patch SUSE-SLE-SERVER-12-SP2-BCL-2021-437=1
o SUSE Linux Enterprise High Availability 12-SP2:
zypper in -t patch SUSE-SLE-HA-12-SP2-2021-437=1
Package List:
o SUSE OpenStack Cloud 7 (s390x x86_64):
kernel-default-4.4.121-92.149.1
kernel-default-base-4.4.121-92.149.1
kernel-default-base-debuginfo-4.4.121-92.149.1
kernel-default-debuginfo-4.4.121-92.149.1
kernel-default-debugsource-4.4.121-92.149.1
kernel-default-devel-4.4.121-92.149.1
kernel-syms-4.4.121-92.149.1
o SUSE OpenStack Cloud 7 (noarch):
kernel-devel-4.4.121-92.149.1
kernel-macros-4.4.121-92.149.1
kernel-source-4.4.121-92.149.1
o SUSE OpenStack Cloud 7 (x86_64):
kgraft-patch-4_4_121-92_149-default-1-3.3.1
o SUSE OpenStack Cloud 7 (s390x):
kernel-default-man-4.4.121-92.149.1
o SUSE Linux Enterprise Server for SAP 12-SP2 (ppc64le x86_64):
kernel-default-4.4.121-92.149.1
kernel-default-base-4.4.121-92.149.1
kernel-default-base-debuginfo-4.4.121-92.149.1
kernel-default-debuginfo-4.4.121-92.149.1
kernel-default-debugsource-4.4.121-92.149.1
kernel-default-devel-4.4.121-92.149.1
kernel-syms-4.4.121-92.149.1
kgraft-patch-4_4_121-92_149-default-1-3.3.1
o SUSE Linux Enterprise Server for SAP 12-SP2 (noarch):
kernel-devel-4.4.121-92.149.1
kernel-macros-4.4.121-92.149.1
kernel-source-4.4.121-92.149.1
o SUSE Linux Enterprise Server 12-SP2-LTSS (ppc64le s390x x86_64):
kernel-default-4.4.121-92.149.1
kernel-default-base-4.4.121-92.149.1
kernel-default-base-debuginfo-4.4.121-92.149.1
kernel-default-debuginfo-4.4.121-92.149.1
kernel-default-debugsource-4.4.121-92.149.1
kernel-default-devel-4.4.121-92.149.1
kernel-syms-4.4.121-92.149.1
o SUSE Linux Enterprise Server 12-SP2-LTSS (ppc64le x86_64):
kgraft-patch-4_4_121-92_149-default-1-3.3.1
o SUSE Linux Enterprise Server 12-SP2-LTSS (noarch):
kernel-devel-4.4.121-92.149.1
kernel-macros-4.4.121-92.149.1
kernel-source-4.4.121-92.149.1
o SUSE Linux Enterprise Server 12-SP2-LTSS (s390x):
kernel-default-man-4.4.121-92.149.1
o SUSE Linux Enterprise Server 12-SP2-BCL (x86_64):
kernel-default-4.4.121-92.149.1
kernel-default-base-4.4.121-92.149.1
kernel-default-base-debuginfo-4.4.121-92.149.1
kernel-default-debuginfo-4.4.121-92.149.1
kernel-default-debugsource-4.4.121-92.149.1
kernel-default-devel-4.4.121-92.149.1
kernel-syms-4.4.121-92.149.1
o SUSE Linux Enterprise Server 12-SP2-BCL (noarch):
kernel-devel-4.4.121-92.149.1
kernel-macros-4.4.121-92.149.1
kernel-source-4.4.121-92.149.1
o SUSE Linux Enterprise High Availability 12-SP2 (ppc64le s390x x86_64):
cluster-md-kmp-default-4.4.121-92.149.1
cluster-md-kmp-default-debuginfo-4.4.121-92.149.1
cluster-network-kmp-default-4.4.121-92.149.1
cluster-network-kmp-default-debuginfo-4.4.121-92.149.1
dlm-kmp-default-4.4.121-92.149.1
dlm-kmp-default-debuginfo-4.4.121-92.149.1
gfs2-kmp-default-4.4.121-92.149.1
gfs2-kmp-default-debuginfo-4.4.121-92.149.1
kernel-default-debuginfo-4.4.121-92.149.1
kernel-default-debugsource-4.4.121-92.149.1
ocfs2-kmp-default-4.4.121-92.149.1
ocfs2-kmp-default-debuginfo-4.4.121-92.149.1
References:
o https://www.suse.com/security/cve/CVE-2019-19063.html
o https://www.suse.com/security/cve/CVE-2019-20934.html
o https://www.suse.com/security/cve/CVE-2019-6133.html
o https://www.suse.com/security/cve/CVE-2020-0444.html
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-2020-11668.html
o https://www.suse.com/security/cve/CVE-2020-15436.html
o https://www.suse.com/security/cve/CVE-2020-15437.html
o https://www.suse.com/security/cve/CVE-2020-25211.html
o https://www.suse.com/security/cve/CVE-2020-25285.html
o https://www.suse.com/security/cve/CVE-2020-25668.html
o https://www.suse.com/security/cve/CVE-2020-25669.html
o https://www.suse.com/security/cve/CVE-2020-27068.html
o https://www.suse.com/security/cve/CVE-2020-27673.html
o https://www.suse.com/security/cve/CVE-2020-27777.html
o https://www.suse.com/security/cve/CVE-2020-27786.html
o https://www.suse.com/security/cve/CVE-2020-27825.html
o https://www.suse.com/security/cve/CVE-2020-28915.html
o https://www.suse.com/security/cve/CVE-2020-28974.html
o https://www.suse.com/security/cve/CVE-2020-29568.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://www.suse.com/security/cve/CVE-2021-3347.html
o https://bugzilla.suse.com/1070943
o https://bugzilla.suse.com/1121826
o https://bugzilla.suse.com/1121872
o https://bugzilla.suse.com/1157298
o https://bugzilla.suse.com/1168952
o https://bugzilla.suse.com/1173942
o https://bugzilla.suse.com/1176395
o https://bugzilla.suse.com/1176485
o https://bugzilla.suse.com/1177411
o https://bugzilla.suse.com/1178123
o https://bugzilla.suse.com/1178182
o https://bugzilla.suse.com/1178589
o https://bugzilla.suse.com/1178622
o https://bugzilla.suse.com/1178886
o https://bugzilla.suse.com/1179107
o https://bugzilla.suse.com/1179140
o https://bugzilla.suse.com/1179141
o https://bugzilla.suse.com/1179204
o https://bugzilla.suse.com/1179419
o https://bugzilla.suse.com/1179508
o https://bugzilla.suse.com/1179509
o https://bugzilla.suse.com/1179601
o https://bugzilla.suse.com/1179616
o https://bugzilla.suse.com/1179663
o https://bugzilla.suse.com/1179666
o https://bugzilla.suse.com/1179745
o https://bugzilla.suse.com/1179877
o https://bugzilla.suse.com/1179960
o https://bugzilla.suse.com/1179961
o https://bugzilla.suse.com/1180008
o https://bugzilla.suse.com/1180027
o https://bugzilla.suse.com/1180028
o https://bugzilla.suse.com/1180029
o https://bugzilla.suse.com/1180030
o https://bugzilla.suse.com/1180031
o https://bugzilla.suse.com/1180032
o https://bugzilla.suse.com/1180052
o https://bugzilla.suse.com/1180086
o https://bugzilla.suse.com/1180559
o https://bugzilla.suse.com/1180562
o https://bugzilla.suse.com/1181349
o https://bugzilla.suse.com/969755
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