-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

=====================================================================
                   Red Hat Security Advisory

Synopsis:          Important: kernel security and bug fix update
Advisory ID:       RHSA-2021:3399-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2021:3399
Issue date:        2021-08-31
CVE Names:         CVE-2021-3347 CVE-2021-22555 CVE-2021-32399 
=====================================================================

1. Summary:

An update for kernel is now available for Red Hat Enterprise Linux 7.2
Advanced 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 AUS (v. 7.2) - noarch, x86_64
Red Hat Enterprise Linux Server Optional AUS (v. 7.2) - x86_64

3. Description:

The kernel packages contain the Linux kernel, the core of any Linux
operating system.

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.

Bug Fix(es):

* [CKI kernel builds]: x86 binaries in non-x86 kernel rpms breaks systemtap
[7.9.z] (BZ#1975163)

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/):

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 AUS (v. 7.2):

Source:
kernel-3.10.0-327.100.1.el7.src.rpm

noarch:
kernel-abi-whitelists-3.10.0-327.100.1.el7.noarch.rpm
kernel-doc-3.10.0-327.100.1.el7.noarch.rpm

x86_64:
kernel-3.10.0-327.100.1.el7.x86_64.rpm
kernel-debug-3.10.0-327.100.1.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-327.100.1.el7.x86_64.rpm
kernel-debug-devel-3.10.0-327.100.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-327.100.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-327.100.1.el7.x86_64.rpm
kernel-devel-3.10.0-327.100.1.el7.x86_64.rpm
kernel-headers-3.10.0-327.100.1.el7.x86_64.rpm
kernel-tools-3.10.0-327.100.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-327.100.1.el7.x86_64.rpm
kernel-tools-libs-3.10.0-327.100.1.el7.x86_64.rpm
perf-3.10.0-327.100.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-327.100.1.el7.x86_64.rpm
python-perf-3.10.0-327.100.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-327.100.1.el7.x86_64.rpm

Red Hat Enterprise Linux Server Optional AUS (v. 7.2):

x86_64:
kernel-debug-debuginfo-3.10.0-327.100.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-327.100.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-327.100.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-327.100.1.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-327.100.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-327.100.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-327.100.1.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.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
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=5gdy
-----END PGP SIGNATURE-----

--
RHSA-announce mailing list
RHSA-announce@redhat.com
https://listman.redhat.com/mailman/listinfo/rhsa-announce