A kernel security and bug fix update has been released for Red Hat Enterprise Linux 8.
RHSA-2021:3447-01: Important: kernel security and bug fix update
=====================================================================
Red Hat Security Advisory
Synopsis: Important: kernel security and bug fix update
Advisory ID: RHSA-2021:3447-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:3447
Issue date: 2021-09-07
CVE Names: CVE-2021-37576 CVE-2021-38201
=====================================================================
1. Summary:
An update for kernel is now available for Red Hat Enterprise Linux 8.
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 (v. 8) - aarch64, ppc64le, x86_64
Red Hat Enterprise Linux BaseOS (v. 8) - 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: powerpc: KVM guest OS users can cause host OS memory corruption
(CVE-2021-37576)
* kernel: slab-out-of-bounds access in xdr_set_page_base() in
net/sunrpc/xdr.c (CVE-2021-38201)
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):
* Update Broadcom Emulex lpfc driver for RHEL8.5 with bug fixes
(BZ#1948608)
* cyclictest shows >50us latency when guest enters idle (RT guest with 18
RT vCPUs) (BZ#1981336)
* xfrm: backports from upstream (BZ#1981840)
* A task is stuck waiting for the completion of the vmci_resouce releasing
upon the balloon reset. (BZ#1982042)
* [mlx5] backport driver bits of net: zero-initialize tc skb extension on
allocation (BZ#1982220)
* Kernel cannot kill a process doing compaction for hugepage allocation
(BZ#1984085)
* RHEL8.4 Nightly[0108] - [P10] [Regression] Kdump failed on RHEL8.4 on SAN
disk via flavafish adapter (qla2xxx/HPT/Radix) (BZ#1986156)
* [RHEL8.5] scheduler updates and fixes (BZ#1987296)
* RHEL 8.3 using FCOE via a FastLinQ QL45000 card will not manually scan in
LUN from Target_id's over 8 (BZ#1989097)
* fixes for oopses in security mitigation runtime code patching
(BZ#1989174)
* act mirred doesn't scrub packets when sending them to ingress
(BZ#1992226)
* HPE: Cannot install 8.4 using the DVD presented to the iLO (BZ#1993894)
* NFS client hangs on share listing when server side readdir verifiers are
implemented (BZ#1993895)
* SNO: The load is extremely high (~870) when pao is added and a profile is
applied. (BZ#1994879)
* timeout value of conntrack entry with TCP ESTABLISHED status is too short
(BZ#1995554)
* Increase the default value for flowtable offload timeouts (BZ#1995555)
* ice/iavf driver stop responding (BZ#1997534)
* [FJ8.4 Bug]: [REG] Some files in /proc/sys/user show wrong data
(BZ#1998002)
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/):
1986506 - CVE-2021-37576 kernel: powerpc: KVM guest OS users can cause host OS memory corruption
1992731 - CVE-2021-38201 kernel: slab-out-of-bounds access in xdr_set_page_base() in net/sunrpc/xdr.c
6. Package List:
Red Hat Enterprise Linux BaseOS (v. 8):
Source:
kernel-4.18.0-305.17.1.el8_4.src.rpm
aarch64:
bpftool-4.18.0-305.17.1.el8_4.aarch64.rpm
bpftool-debuginfo-4.18.0-305.17.1.el8_4.aarch64.rpm
kernel-4.18.0-305.17.1.el8_4.aarch64.rpm
kernel-core-4.18.0-305.17.1.el8_4.aarch64.rpm
kernel-cross-headers-4.18.0-305.17.1.el8_4.aarch64.rpm
kernel-debug-4.18.0-305.17.1.el8_4.aarch64.rpm
kernel-debug-core-4.18.0-305.17.1.el8_4.aarch64.rpm
kernel-debug-debuginfo-4.18.0-305.17.1.el8_4.aarch64.rpm
kernel-debug-devel-4.18.0-305.17.1.el8_4.aarch64.rpm
kernel-debug-modules-4.18.0-305.17.1.el8_4.aarch64.rpm
kernel-debug-modules-extra-4.18.0-305.17.1.el8_4.aarch64.rpm
kernel-debuginfo-4.18.0-305.17.1.el8_4.aarch64.rpm
kernel-debuginfo-common-aarch64-4.18.0-305.17.1.el8_4.aarch64.rpm
kernel-devel-4.18.0-305.17.1.el8_4.aarch64.rpm
kernel-headers-4.18.0-305.17.1.el8_4.aarch64.rpm
kernel-modules-4.18.0-305.17.1.el8_4.aarch64.rpm
kernel-modules-extra-4.18.0-305.17.1.el8_4.aarch64.rpm
kernel-tools-4.18.0-305.17.1.el8_4.aarch64.rpm
kernel-tools-debuginfo-4.18.0-305.17.1.el8_4.aarch64.rpm
kernel-tools-libs-4.18.0-305.17.1.el8_4.aarch64.rpm
perf-4.18.0-305.17.1.el8_4.aarch64.rpm
perf-debuginfo-4.18.0-305.17.1.el8_4.aarch64.rpm
python3-perf-4.18.0-305.17.1.el8_4.aarch64.rpm
python3-perf-debuginfo-4.18.0-305.17.1.el8_4.aarch64.rpm
noarch:
kernel-abi-stablelists-4.18.0-305.17.1.el8_4.noarch.rpm
kernel-doc-4.18.0-305.17.1.el8_4.noarch.rpm
ppc64le:
bpftool-4.18.0-305.17.1.el8_4.ppc64le.rpm
bpftool-debuginfo-4.18.0-305.17.1.el8_4.ppc64le.rpm
kernel-4.18.0-305.17.1.el8_4.ppc64le.rpm
kernel-core-4.18.0-305.17.1.el8_4.ppc64le.rpm
kernel-cross-headers-4.18.0-305.17.1.el8_4.ppc64le.rpm
kernel-debug-4.18.0-305.17.1.el8_4.ppc64le.rpm
kernel-debug-core-4.18.0-305.17.1.el8_4.ppc64le.rpm
kernel-debug-debuginfo-4.18.0-305.17.1.el8_4.ppc64le.rpm
kernel-debug-devel-4.18.0-305.17.1.el8_4.ppc64le.rpm
kernel-debug-modules-4.18.0-305.17.1.el8_4.ppc64le.rpm
kernel-debug-modules-extra-4.18.0-305.17.1.el8_4.ppc64le.rpm
kernel-debuginfo-4.18.0-305.17.1.el8_4.ppc64le.rpm
kernel-debuginfo-common-ppc64le-4.18.0-305.17.1.el8_4.ppc64le.rpm
kernel-devel-4.18.0-305.17.1.el8_4.ppc64le.rpm
kernel-headers-4.18.0-305.17.1.el8_4.ppc64le.rpm
kernel-modules-4.18.0-305.17.1.el8_4.ppc64le.rpm
kernel-modules-extra-4.18.0-305.17.1.el8_4.ppc64le.rpm
kernel-tools-4.18.0-305.17.1.el8_4.ppc64le.rpm
kernel-tools-debuginfo-4.18.0-305.17.1.el8_4.ppc64le.rpm
kernel-tools-libs-4.18.0-305.17.1.el8_4.ppc64le.rpm
perf-4.18.0-305.17.1.el8_4.ppc64le.rpm
perf-debuginfo-4.18.0-305.17.1.el8_4.ppc64le.rpm
python3-perf-4.18.0-305.17.1.el8_4.ppc64le.rpm
python3-perf-debuginfo-4.18.0-305.17.1.el8_4.ppc64le.rpm
s390x:
bpftool-4.18.0-305.17.1.el8_4.s390x.rpm
bpftool-debuginfo-4.18.0-305.17.1.el8_4.s390x.rpm
kernel-4.18.0-305.17.1.el8_4.s390x.rpm
kernel-core-4.18.0-305.17.1.el8_4.s390x.rpm
kernel-cross-headers-4.18.0-305.17.1.el8_4.s390x.rpm
kernel-debug-4.18.0-305.17.1.el8_4.s390x.rpm
kernel-debug-core-4.18.0-305.17.1.el8_4.s390x.rpm
kernel-debug-debuginfo-4.18.0-305.17.1.el8_4.s390x.rpm
kernel-debug-devel-4.18.0-305.17.1.el8_4.s390x.rpm
kernel-debug-modules-4.18.0-305.17.1.el8_4.s390x.rpm
kernel-debug-modules-extra-4.18.0-305.17.1.el8_4.s390x.rpm
kernel-debuginfo-4.18.0-305.17.1.el8_4.s390x.rpm
kernel-debuginfo-common-s390x-4.18.0-305.17.1.el8_4.s390x.rpm
kernel-devel-4.18.0-305.17.1.el8_4.s390x.rpm
kernel-headers-4.18.0-305.17.1.el8_4.s390x.rpm
kernel-modules-4.18.0-305.17.1.el8_4.s390x.rpm
kernel-modules-extra-4.18.0-305.17.1.el8_4.s390x.rpm
kernel-tools-4.18.0-305.17.1.el8_4.s390x.rpm
kernel-tools-debuginfo-4.18.0-305.17.1.el8_4.s390x.rpm
kernel-zfcpdump-4.18.0-305.17.1.el8_4.s390x.rpm
kernel-zfcpdump-core-4.18.0-305.17.1.el8_4.s390x.rpm
kernel-zfcpdump-debuginfo-4.18.0-305.17.1.el8_4.s390x.rpm
kernel-zfcpdump-devel-4.18.0-305.17.1.el8_4.s390x.rpm
kernel-zfcpdump-modules-4.18.0-305.17.1.el8_4.s390x.rpm
kernel-zfcpdump-modules-extra-4.18.0-305.17.1.el8_4.s390x.rpm
perf-4.18.0-305.17.1.el8_4.s390x.rpm
perf-debuginfo-4.18.0-305.17.1.el8_4.s390x.rpm
python3-perf-4.18.0-305.17.1.el8_4.s390x.rpm
python3-perf-debuginfo-4.18.0-305.17.1.el8_4.s390x.rpm
x86_64:
bpftool-4.18.0-305.17.1.el8_4.x86_64.rpm
bpftool-debuginfo-4.18.0-305.17.1.el8_4.x86_64.rpm
kernel-4.18.0-305.17.1.el8_4.x86_64.rpm
kernel-core-4.18.0-305.17.1.el8_4.x86_64.rpm
kernel-cross-headers-4.18.0-305.17.1.el8_4.x86_64.rpm
kernel-debug-4.18.0-305.17.1.el8_4.x86_64.rpm
kernel-debug-core-4.18.0-305.17.1.el8_4.x86_64.rpm
kernel-debug-debuginfo-4.18.0-305.17.1.el8_4.x86_64.rpm
kernel-debug-devel-4.18.0-305.17.1.el8_4.x86_64.rpm
kernel-debug-modules-4.18.0-305.17.1.el8_4.x86_64.rpm
kernel-debug-modules-extra-4.18.0-305.17.1.el8_4.x86_64.rpm
kernel-debuginfo-4.18.0-305.17.1.el8_4.x86_64.rpm
kernel-debuginfo-common-x86_64-4.18.0-305.17.1.el8_4.x86_64.rpm
kernel-devel-4.18.0-305.17.1.el8_4.x86_64.rpm
kernel-headers-4.18.0-305.17.1.el8_4.x86_64.rpm
kernel-modules-4.18.0-305.17.1.el8_4.x86_64.rpm
kernel-modules-extra-4.18.0-305.17.1.el8_4.x86_64.rpm
kernel-tools-4.18.0-305.17.1.el8_4.x86_64.rpm
kernel-tools-debuginfo-4.18.0-305.17.1.el8_4.x86_64.rpm
kernel-tools-libs-4.18.0-305.17.1.el8_4.x86_64.rpm
perf-4.18.0-305.17.1.el8_4.x86_64.rpm
perf-debuginfo-4.18.0-305.17.1.el8_4.x86_64.rpm
python3-perf-4.18.0-305.17.1.el8_4.x86_64.rpm
python3-perf-debuginfo-4.18.0-305.17.1.el8_4.x86_64.rpm
Red Hat CodeReady Linux Builder (v. 8):
aarch64:
bpftool-debuginfo-4.18.0-305.17.1.el8_4.aarch64.rpm
kernel-debug-debuginfo-4.18.0-305.17.1.el8_4.aarch64.rpm
kernel-debuginfo-4.18.0-305.17.1.el8_4.aarch64.rpm
kernel-debuginfo-common-aarch64-4.18.0-305.17.1.el8_4.aarch64.rpm
kernel-tools-debuginfo-4.18.0-305.17.1.el8_4.aarch64.rpm
kernel-tools-libs-devel-4.18.0-305.17.1.el8_4.aarch64.rpm
perf-debuginfo-4.18.0-305.17.1.el8_4.aarch64.rpm
python3-perf-debuginfo-4.18.0-305.17.1.el8_4.aarch64.rpm
ppc64le:
bpftool-debuginfo-4.18.0-305.17.1.el8_4.ppc64le.rpm
kernel-debug-debuginfo-4.18.0-305.17.1.el8_4.ppc64le.rpm
kernel-debuginfo-4.18.0-305.17.1.el8_4.ppc64le.rpm
kernel-debuginfo-common-ppc64le-4.18.0-305.17.1.el8_4.ppc64le.rpm
kernel-tools-debuginfo-4.18.0-305.17.1.el8_4.ppc64le.rpm
kernel-tools-libs-devel-4.18.0-305.17.1.el8_4.ppc64le.rpm
perf-debuginfo-4.18.0-305.17.1.el8_4.ppc64le.rpm
python3-perf-debuginfo-4.18.0-305.17.1.el8_4.ppc64le.rpm
x86_64:
bpftool-debuginfo-4.18.0-305.17.1.el8_4.x86_64.rpm
kernel-debug-debuginfo-4.18.0-305.17.1.el8_4.x86_64.rpm
kernel-debuginfo-4.18.0-305.17.1.el8_4.x86_64.rpm
kernel-debuginfo-common-x86_64-4.18.0-305.17.1.el8_4.x86_64.rpm
kernel-tools-debuginfo-4.18.0-305.17.1.el8_4.x86_64.rpm
kernel-tools-libs-devel-4.18.0-305.17.1.el8_4.x86_64.rpm
perf-debuginfo-4.18.0-305.17.1.el8_4.x86_64.rpm
python3-perf-debuginfo-4.18.0-305.17.1.el8_4.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-2021-37576
https://access.redhat.com/security/cve/CVE-2021-38201
https://access.redhat.com/security/updates/classification/#important
8. Contact:
The Red Hat security contact is . More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2021 Red Hat, Inc.
