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===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2021.0839
kernel security, bug fix, and enhancement update
10 March 2021
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: kernel
Publisher: Red Hat
Operating System: Red Hat
Impact/Access: Increased Privileges -- Existing Account
Denial of Service -- Existing Account
Access Confidential Data -- Remote/Unauthenticated
Reduced Security -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2020-29661 CVE-2020-25705 CVE-2020-25211
CVE-2020-14351 CVE-2020-0444
Reference: ESB-2021.0768
ESB-2021.0589
ESB-2021.0556
Original Bulletin:
https://access.redhat.com/errata/RHSA-2021:0765
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=====================================================================
Red Hat Security Advisory
Synopsis: Important: kernel security, bug fix, and enhancement update
Advisory ID: RHSA-2021:0765-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:0765
Issue date: 2021-03-09
CVE Names: CVE-2020-0444 CVE-2020-14351 CVE-2020-25211
CVE-2020-25705 CVE-2020-29661
=====================================================================
1. Summary:
An update for kernel is now available for Red Hat Enterprise Linux 8.2
Extended Update Support.
Red Hat Product Security has rated this update as having a security impact
of Important. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available for each vulnerability
from the CVE link(s) in the References section.
2. Relevant releases/architectures:
Red Hat CodeReady Linux Builder EUS (v. 8.2) - aarch64, ppc64le, x86_64
Red Hat Enterprise Linux BaseOS EUS (v. 8.2) - aarch64, noarch, ppc64le, s390x, x86_64
3. Description:
The kernel packages contain the Linux kernel, the core of any Linux
operating system.
Security Fix(es):
* kernel: bad kfree in auditfilter.c may lead to escalation of privilege
(CVE-2020-0444)
* kernel: Local buffer overflow in ctnetlink_parse_tuple_filter in
net/netfilter/nf_conntrack_netlink.c (CVE-2020-25211)
* kernel: locking issue in drivers/tty/tty_jobctrl.c can lead to an
use-after-free (CVE-2020-29661)
* kernel: performance counters race condition use-after-free
(CVE-2020-14351)
* kernel: ICMP rate limiting can be used for DNS poisoning attack
(CVE-2020-25705)
For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, and other related information, refer to the CVE
page(s) listed in the References section.
Bug Fix(es):
* RHEL8.1 - net/smc: fix silent data corruption in SMC (BZ#1882241)
* [mlx5] VF interface stats are not reflected in "ip -s link show" /
"ifconfig <vf>" commands (BZ#1889301)
* [mlx5] IPV6 TOS rewrite flows are not getting offloaded in HW
(BZ#1897689)
* RHEL 8.1 - Call traces show I/O stuck for more than 120 sec when at least
one path is available for NVMe/IB (BZ#1901525)
* RHEL8: kernel-rt: kernel BUG at kernel/sched/deadline.c:1462!
(BZ#1908732)
* [Hyper-V][RHEL-8] Request to included a commit that adds a timeout to
vmbus_wait_for_unload (BZ#1913529)
* Host becomes unresponsive during stress-ng --cyclic test rcu: INFO:
rcu_preempt detected stalls on CPUs/tasks: (BZ#1913965)
* race condition when creating child sockets from syncookies (BZ#1915530)
* Missing mm backport to fix regression introduced by another mm backport
(BZ#1915815)
* On System Z, a hash needs state randomized for entropy extraction
(BZ#1915817)
* [Hyper-V][RHEL-8]video: hyperv_fb: Fix the cache type when mapping the
VRAM Edit (BZ#1917712)
* kvm-rhel8.3 [AMD] - system crash observed while powering on virtual
machine with attached VF interfaces. (BZ#1919886)
* [CKI kernel builds]: x86 binaries in non-x86 kernel rpms breaks systemtap
(BZ#1929909)
* rpmbuild cannot build the userspace RPMs in the kernel package when the
kernel itself is not built (BZ#1929911)
Enhancement(s):
* [Mellanox 8.4 FEAT] mlx5: Add messages when VF-LAG fails to start
(BZ#1892345)
* Add kernel option to change cpumask for kernel threads (BZ#1915344)
4. Solution:
For details on how to apply this update, which includes the changes
described in this advisory, refer to:
https://access.redhat.com/articles/11258
The system must be rebooted for this update to take effect.
5. Bugs fixed (https://bugzilla.redhat.com/):
1862849 - CVE-2020-14351 kernel: performance counters race condition use-after-free
1877571 - CVE-2020-25211 kernel: Local buffer overflow in ctnetlink_parse_tuple_filter in net/netfilter/nf_conntrack_netlink.c
1894579 - CVE-2020-25705 kernel: ICMP rate limiting can be used for DNS poisoning attack
1906525 - CVE-2020-29661 kernel: locking issue in drivers/tty/tty_jobctrl.c can lead to an use-after-free
1920474 - CVE-2020-0444 kernel: bad kfree in auditfilter.c may lead to escalation of privilege
6. Package List:
Red Hat Enterprise Linux BaseOS EUS (v. 8.2):
Source:
kernel-4.18.0-193.46.1.el8_2.src.rpm
aarch64:
bpftool-4.18.0-193.46.1.el8_2.aarch64.rpm
bpftool-debuginfo-4.18.0-193.46.1.el8_2.aarch64.rpm
kernel-4.18.0-193.46.1.el8_2.aarch64.rpm
kernel-core-4.18.0-193.46.1.el8_2.aarch64.rpm
kernel-cross-headers-4.18.0-193.46.1.el8_2.aarch64.rpm
kernel-debug-4.18.0-193.46.1.el8_2.aarch64.rpm
kernel-debug-core-4.18.0-193.46.1.el8_2.aarch64.rpm
kernel-debug-debuginfo-4.18.0-193.46.1.el8_2.aarch64.rpm
kernel-debug-devel-4.18.0-193.46.1.el8_2.aarch64.rpm
kernel-debug-modules-4.18.0-193.46.1.el8_2.aarch64.rpm
kernel-debug-modules-extra-4.18.0-193.46.1.el8_2.aarch64.rpm
kernel-debuginfo-4.18.0-193.46.1.el8_2.aarch64.rpm
kernel-debuginfo-common-aarch64-4.18.0-193.46.1.el8_2.aarch64.rpm
kernel-devel-4.18.0-193.46.1.el8_2.aarch64.rpm
kernel-headers-4.18.0-193.46.1.el8_2.aarch64.rpm
kernel-modules-4.18.0-193.46.1.el8_2.aarch64.rpm
kernel-modules-extra-4.18.0-193.46.1.el8_2.aarch64.rpm
kernel-tools-4.18.0-193.46.1.el8_2.aarch64.rpm
kernel-tools-debuginfo-4.18.0-193.46.1.el8_2.aarch64.rpm
kernel-tools-libs-4.18.0-193.46.1.el8_2.aarch64.rpm
perf-4.18.0-193.46.1.el8_2.aarch64.rpm
perf-debuginfo-4.18.0-193.46.1.el8_2.aarch64.rpm
python3-perf-4.18.0-193.46.1.el8_2.aarch64.rpm
python3-perf-debuginfo-4.18.0-193.46.1.el8_2.aarch64.rpm
noarch:
kernel-abi-whitelists-4.18.0-193.46.1.el8_2.noarch.rpm
kernel-doc-4.18.0-193.46.1.el8_2.noarch.rpm
ppc64le:
bpftool-4.18.0-193.46.1.el8_2.ppc64le.rpm
bpftool-debuginfo-4.18.0-193.46.1.el8_2.ppc64le.rpm
kernel-4.18.0-193.46.1.el8_2.ppc64le.rpm
kernel-core-4.18.0-193.46.1.el8_2.ppc64le.rpm
kernel-cross-headers-4.18.0-193.46.1.el8_2.ppc64le.rpm
kernel-debug-4.18.0-193.46.1.el8_2.ppc64le.rpm
kernel-debug-core-4.18.0-193.46.1.el8_2.ppc64le.rpm
kernel-debug-debuginfo-4.18.0-193.46.1.el8_2.ppc64le.rpm
kernel-debug-devel-4.18.0-193.46.1.el8_2.ppc64le.rpm
kernel-debug-modules-4.18.0-193.46.1.el8_2.ppc64le.rpm
kernel-debug-modules-extra-4.18.0-193.46.1.el8_2.ppc64le.rpm
kernel-debuginfo-4.18.0-193.46.1.el8_2.ppc64le.rpm
kernel-debuginfo-common-ppc64le-4.18.0-193.46.1.el8_2.ppc64le.rpm
kernel-devel-4.18.0-193.46.1.el8_2.ppc64le.rpm
kernel-headers-4.18.0-193.46.1.el8_2.ppc64le.rpm
kernel-modules-4.18.0-193.46.1.el8_2.ppc64le.rpm
kernel-modules-extra-4.18.0-193.46.1.el8_2.ppc64le.rpm
kernel-tools-4.18.0-193.46.1.el8_2.ppc64le.rpm
kernel-tools-debuginfo-4.18.0-193.46.1.el8_2.ppc64le.rpm
kernel-tools-libs-4.18.0-193.46.1.el8_2.ppc64le.rpm
perf-4.18.0-193.46.1.el8_2.ppc64le.rpm
perf-debuginfo-4.18.0-193.46.1.el8_2.ppc64le.rpm
python3-perf-4.18.0-193.46.1.el8_2.ppc64le.rpm
python3-perf-debuginfo-4.18.0-193.46.1.el8_2.ppc64le.rpm
s390x:
bpftool-4.18.0-193.46.1.el8_2.s390x.rpm
bpftool-debuginfo-4.18.0-193.46.1.el8_2.s390x.rpm
kernel-4.18.0-193.46.1.el8_2.s390x.rpm
kernel-core-4.18.0-193.46.1.el8_2.s390x.rpm
kernel-cross-headers-4.18.0-193.46.1.el8_2.s390x.rpm
kernel-debug-4.18.0-193.46.1.el8_2.s390x.rpm
kernel-debug-core-4.18.0-193.46.1.el8_2.s390x.rpm
kernel-debug-debuginfo-4.18.0-193.46.1.el8_2.s390x.rpm
kernel-debug-devel-4.18.0-193.46.1.el8_2.s390x.rpm
kernel-debug-modules-4.18.0-193.46.1.el8_2.s390x.rpm
kernel-debug-modules-extra-4.18.0-193.46.1.el8_2.s390x.rpm
kernel-debuginfo-4.18.0-193.46.1.el8_2.s390x.rpm
kernel-debuginfo-common-s390x-4.18.0-193.46.1.el8_2.s390x.rpm
kernel-devel-4.18.0-193.46.1.el8_2.s390x.rpm
kernel-headers-4.18.0-193.46.1.el8_2.s390x.rpm
kernel-modules-4.18.0-193.46.1.el8_2.s390x.rpm
kernel-modules-extra-4.18.0-193.46.1.el8_2.s390x.rpm
kernel-tools-4.18.0-193.46.1.el8_2.s390x.rpm
kernel-tools-debuginfo-4.18.0-193.46.1.el8_2.s390x.rpm
kernel-zfcpdump-4.18.0-193.46.1.el8_2.s390x.rpm
kernel-zfcpdump-core-4.18.0-193.46.1.el8_2.s390x.rpm
kernel-zfcpdump-debuginfo-4.18.0-193.46.1.el8_2.s390x.rpm
kernel-zfcpdump-devel-4.18.0-193.46.1.el8_2.s390x.rpm
kernel-zfcpdump-modules-4.18.0-193.46.1.el8_2.s390x.rpm
kernel-zfcpdump-modules-extra-4.18.0-193.46.1.el8_2.s390x.rpm
perf-4.18.0-193.46.1.el8_2.s390x.rpm
perf-debuginfo-4.18.0-193.46.1.el8_2.s390x.rpm
python3-perf-4.18.0-193.46.1.el8_2.s390x.rpm
python3-perf-debuginfo-4.18.0-193.46.1.el8_2.s390x.rpm
x86_64:
bpftool-4.18.0-193.46.1.el8_2.x86_64.rpm
bpftool-debuginfo-4.18.0-193.46.1.el8_2.x86_64.rpm
kernel-4.18.0-193.46.1.el8_2.x86_64.rpm
kernel-core-4.18.0-193.46.1.el8_2.x86_64.rpm
kernel-cross-headers-4.18.0-193.46.1.el8_2.x86_64.rpm
kernel-debug-4.18.0-193.46.1.el8_2.x86_64.rpm
kernel-debug-core-4.18.0-193.46.1.el8_2.x86_64.rpm
kernel-debug-debuginfo-4.18.0-193.46.1.el8_2.x86_64.rpm
kernel-debug-devel-4.18.0-193.46.1.el8_2.x86_64.rpm
kernel-debug-modules-4.18.0-193.46.1.el8_2.x86_64.rpm
kernel-debug-modules-extra-4.18.0-193.46.1.el8_2.x86_64.rpm
kernel-debuginfo-4.18.0-193.46.1.el8_2.x86_64.rpm
kernel-debuginfo-common-x86_64-4.18.0-193.46.1.el8_2.x86_64.rpm
kernel-devel-4.18.0-193.46.1.el8_2.x86_64.rpm
kernel-headers-4.18.0-193.46.1.el8_2.x86_64.rpm
kernel-modules-4.18.0-193.46.1.el8_2.x86_64.rpm
kernel-modules-extra-4.18.0-193.46.1.el8_2.x86_64.rpm
kernel-tools-4.18.0-193.46.1.el8_2.x86_64.rpm
kernel-tools-debuginfo-4.18.0-193.46.1.el8_2.x86_64.rpm
kernel-tools-libs-4.18.0-193.46.1.el8_2.x86_64.rpm
perf-4.18.0-193.46.1.el8_2.x86_64.rpm
perf-debuginfo-4.18.0-193.46.1.el8_2.x86_64.rpm
python3-perf-4.18.0-193.46.1.el8_2.x86_64.rpm
python3-perf-debuginfo-4.18.0-193.46.1.el8_2.x86_64.rpm
Red Hat CodeReady Linux Builder EUS (v. 8.2):
aarch64:
bpftool-debuginfo-4.18.0-193.46.1.el8_2.aarch64.rpm
kernel-debug-debuginfo-4.18.0-193.46.1.el8_2.aarch64.rpm
kernel-debuginfo-4.18.0-193.46.1.el8_2.aarch64.rpm
kernel-debuginfo-common-aarch64-4.18.0-193.46.1.el8_2.aarch64.rpm
kernel-tools-debuginfo-4.18.0-193.46.1.el8_2.aarch64.rpm
kernel-tools-libs-devel-4.18.0-193.46.1.el8_2.aarch64.rpm
perf-debuginfo-4.18.0-193.46.1.el8_2.aarch64.rpm
python3-perf-debuginfo-4.18.0-193.46.1.el8_2.aarch64.rpm
ppc64le:
bpftool-debuginfo-4.18.0-193.46.1.el8_2.ppc64le.rpm
kernel-debug-debuginfo-4.18.0-193.46.1.el8_2.ppc64le.rpm
kernel-debuginfo-4.18.0-193.46.1.el8_2.ppc64le.rpm
kernel-debuginfo-common-ppc64le-4.18.0-193.46.1.el8_2.ppc64le.rpm
kernel-tools-debuginfo-4.18.0-193.46.1.el8_2.ppc64le.rpm
kernel-tools-libs-devel-4.18.0-193.46.1.el8_2.ppc64le.rpm
perf-debuginfo-4.18.0-193.46.1.el8_2.ppc64le.rpm
python3-perf-debuginfo-4.18.0-193.46.1.el8_2.ppc64le.rpm
x86_64:
bpftool-debuginfo-4.18.0-193.46.1.el8_2.x86_64.rpm
kernel-debug-debuginfo-4.18.0-193.46.1.el8_2.x86_64.rpm
kernel-debuginfo-4.18.0-193.46.1.el8_2.x86_64.rpm
kernel-debuginfo-common-x86_64-4.18.0-193.46.1.el8_2.x86_64.rpm
kernel-tools-debuginfo-4.18.0-193.46.1.el8_2.x86_64.rpm
kernel-tools-libs-devel-4.18.0-193.46.1.el8_2.x86_64.rpm
perf-debuginfo-4.18.0-193.46.1.el8_2.x86_64.rpm
python3-perf-debuginfo-4.18.0-193.46.1.el8_2.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/
7. References:
https://access.redhat.com/security/cve/CVE-2020-0444
https://access.redhat.com/security/cve/CVE-2020-14351
https://access.redhat.com/security/cve/CVE-2020-25211
https://access.redhat.com/security/cve/CVE-2020-25705
https://access.redhat.com/security/cve/CVE-2020-29661
https://access.redhat.com/security/updates/classification/#important
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2021 Red Hat, Inc.
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