Protect yourself against future threats.
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AUSCERT External Security Bulletin Redistribution
ESB-2021.3074
kpatch-patch security update
15 September 2021
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: kpatch-patch
Publisher: Red Hat
Operating System: Red Hat
Impact/Access: Root Compromise -- Existing Account
Denial of Service -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2021-32399 CVE-2021-22555 CVE-2021-3347
Reference: ESB-2021.3070
ESB-2021.2899
ESB-2021.2711
Original Bulletin:
https://access.redhat.com/errata/RHSA-2021:3523
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Red Hat Security Advisory
Synopsis: Important: kpatch-patch security update
Advisory ID: RHSA-2021:3523-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:3523
Issue date: 2021-09-14
CVE Names: CVE-2021-3347 CVE-2021-22555 CVE-2021-32399
=====================================================================
1. Summary:
An update is now available for Red Hat Enterprise Linux 7.7 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 Enterprise Linux Server E4S (v. 7.7) - ppc64le, x86_64
3. Description:
This is a kernel live patch module which is automatically loaded by the RPM
post-install script to modify the code of a running kernel.
Security Fix(es):
* kernel: Use after free via PI futex state (CVE-2021-3347)
* kernel: out-of-bounds write in xt_compat_target_from_user() in
net/netfilter/x_tables.c (CVE-2021-22555)
* kernel: race condition for removal of the HCI controller (CVE-2021-32399)
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.
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
5. Bugs fixed (https://bugzilla.redhat.com/):
1922249 - CVE-2021-3347 kernel: Use after free via PI futex state
1970807 - CVE-2021-32399 kernel: race condition for removal of the HCI controller
1980101 - CVE-2021-22555 kernel: out-of-bounds write in xt_compat_target_from_user() in net/netfilter/x_tables.c
6. Package List:
Red Hat Enterprise Linux Server E4S (v. 7.7):
Source:
kpatch-patch-3_10_0-1062_36_1-1-5.el7.src.rpm
kpatch-patch-3_10_0-1062_37_1-1-5.el7.src.rpm
kpatch-patch-3_10_0-1062_40_1-1-5.el7.src.rpm
kpatch-patch-3_10_0-1062_43_1-1-5.el7.src.rpm
kpatch-patch-3_10_0-1062_45_1-1-5.el7.src.rpm
kpatch-patch-3_10_0-1062_46_1-1-4.el7.src.rpm
kpatch-patch-3_10_0-1062_49_1-1-2.el7.src.rpm
kpatch-patch-3_10_0-1062_51_1-1-2.el7.src.rpm
kpatch-patch-3_10_0-1062_52_2-1-1.el7.src.rpm
ppc64le:
kpatch-patch-3_10_0-1062_36_1-1-5.el7.ppc64le.rpm
kpatch-patch-3_10_0-1062_36_1-debuginfo-1-5.el7.ppc64le.rpm
kpatch-patch-3_10_0-1062_37_1-1-5.el7.ppc64le.rpm
kpatch-patch-3_10_0-1062_37_1-debuginfo-1-5.el7.ppc64le.rpm
kpatch-patch-3_10_0-1062_40_1-1-5.el7.ppc64le.rpm
kpatch-patch-3_10_0-1062_40_1-debuginfo-1-5.el7.ppc64le.rpm
kpatch-patch-3_10_0-1062_43_1-1-5.el7.ppc64le.rpm
kpatch-patch-3_10_0-1062_43_1-debuginfo-1-5.el7.ppc64le.rpm
kpatch-patch-3_10_0-1062_45_1-1-5.el7.ppc64le.rpm
kpatch-patch-3_10_0-1062_45_1-debuginfo-1-5.el7.ppc64le.rpm
kpatch-patch-3_10_0-1062_46_1-1-4.el7.ppc64le.rpm
kpatch-patch-3_10_0-1062_46_1-debuginfo-1-4.el7.ppc64le.rpm
kpatch-patch-3_10_0-1062_49_1-1-2.el7.ppc64le.rpm
kpatch-patch-3_10_0-1062_49_1-debuginfo-1-2.el7.ppc64le.rpm
kpatch-patch-3_10_0-1062_51_1-1-2.el7.ppc64le.rpm
kpatch-patch-3_10_0-1062_51_1-debuginfo-1-2.el7.ppc64le.rpm
kpatch-patch-3_10_0-1062_52_2-1-1.el7.ppc64le.rpm
kpatch-patch-3_10_0-1062_52_2-debuginfo-1-1.el7.ppc64le.rpm
x86_64:
kpatch-patch-3_10_0-1062_36_1-1-5.el7.x86_64.rpm
kpatch-patch-3_10_0-1062_36_1-debuginfo-1-5.el7.x86_64.rpm
kpatch-patch-3_10_0-1062_37_1-1-5.el7.x86_64.rpm
kpatch-patch-3_10_0-1062_37_1-debuginfo-1-5.el7.x86_64.rpm
kpatch-patch-3_10_0-1062_40_1-1-5.el7.x86_64.rpm
kpatch-patch-3_10_0-1062_40_1-debuginfo-1-5.el7.x86_64.rpm
kpatch-patch-3_10_0-1062_43_1-1-5.el7.x86_64.rpm
kpatch-patch-3_10_0-1062_43_1-debuginfo-1-5.el7.x86_64.rpm
kpatch-patch-3_10_0-1062_45_1-1-5.el7.x86_64.rpm
kpatch-patch-3_10_0-1062_45_1-debuginfo-1-5.el7.x86_64.rpm
kpatch-patch-3_10_0-1062_46_1-1-4.el7.x86_64.rpm
kpatch-patch-3_10_0-1062_46_1-debuginfo-1-4.el7.x86_64.rpm
kpatch-patch-3_10_0-1062_49_1-1-2.el7.x86_64.rpm
kpatch-patch-3_10_0-1062_49_1-debuginfo-1-2.el7.x86_64.rpm
kpatch-patch-3_10_0-1062_51_1-1-2.el7.x86_64.rpm
kpatch-patch-3_10_0-1062_51_1-debuginfo-1-2.el7.x86_64.rpm
kpatch-patch-3_10_0-1062_52_2-1-1.el7.x86_64.rpm
kpatch-patch-3_10_0-1062_52_2-debuginfo-1-1.el7.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-2021-3347
https://access.redhat.com/security/cve/CVE-2021-22555
https://access.redhat.com/security/cve/CVE-2021-32399
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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