[RHSA-2020:3221-01] Important: kernel-rt security and bug fix update

Wed Jul 29 18:20:48 UTC 2020

An update for kernel-rt is now available for Red Hat Enterprise Linux 7.

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 Realtime (v. 7) - noarch, x86_64
Red Hat Enterprise Linux for Real Time for NFV (v. 7) - noarch, x86_64

3. Description:

The kernel-rt packages provide the Real Time Linux Kernel, which enables
fine-tuning for systems with extremely high determinism requirements.

Security Fix(es):

* kernel: kernel: DAX hugepages not considered during mremap
(CVE-2020-10757)

* kernel: buffer overflow in mwifiex_cmd_append_vsie_tlv function in
drivers/net/wireless/marvell/mwifiex/scan.c (CVE-2020-12653)

* kernel: heap-based buffer overflow in mwifiex_ret_wmm_get_status function
in drivers/net/wireless/marvell/mwifiex/wmm.c (CVE-2020-12654)

* kernel: use-after-free caused by a malicious USB device in the
drivers/hid/usbhid/hiddev.c driver (CVE-2019-19527)

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):

* kernel-rt: provide infrastructure to support dual-signing of the kernel
(foundation to help address CVE-2020-10713) (BZ#1837438)

* kernel-rt: update to the latest RHEL7.8.z3 source tree (BZ#1848017)

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/):

1783498 - CVE-2019-19527 kernel: use-after-free caused by a malicious USB device in the drivers/hid/usbhid/hiddev.c driver
1831868 - CVE-2020-12653 kernel: buffer overflow in mwifiex_cmd_append_vsie_tlv function in drivers/net/wireless/marvell/mwifiex/scan.c
1832530 - CVE-2020-12654 kernel: heap-based buffer overflow in mwifiex_ret_wmm_get_status function in drivers/net/wireless/marvell/mwifiex/wmm.c
1842525 - CVE-2020-10757 kernel: kernel: DAX hugepages not considered during mremap

6. Package List:

Red Hat Enterprise Linux for Real Time for NFV (v. 7):

Source:
kernel-rt-3.10.0-1127.18.2.rt56.1116.el7.src.rpm

noarch:
kernel-rt-doc-3.10.0-1127.18.2.rt56.1116.el7.noarch.rpm

x86_64:
kernel-rt-3.10.0-1127.18.2.rt56.1116.el7.x86_64.rpm
kernel-rt-debug-3.10.0-1127.18.2.rt56.1116.el7.x86_64.rpm
kernel-rt-debug-debuginfo-3.10.0-1127.18.2.rt56.1116.el7.x86_64.rpm
kernel-rt-debug-devel-3.10.0-1127.18.2.rt56.1116.el7.x86_64.rpm
kernel-rt-debug-kvm-3.10.0-1127.18.2.rt56.1116.el7.x86_64.rpm
kernel-rt-debug-kvm-debuginfo-3.10.0-1127.18.2.rt56.1116.el7.x86_64.rpm
kernel-rt-debuginfo-3.10.0-1127.18.2.rt56.1116.el7.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-3.10.0-1127.18.2.rt56.1116.el7.x86_64.rpm
kernel-rt-devel-3.10.0-1127.18.2.rt56.1116.el7.x86_64.rpm
kernel-rt-kvm-3.10.0-1127.18.2.rt56.1116.el7.x86_64.rpm
kernel-rt-kvm-debuginfo-3.10.0-1127.18.2.rt56.1116.el7.x86_64.rpm
kernel-rt-trace-3.10.0-1127.18.2.rt56.1116.el7.x86_64.rpm
kernel-rt-trace-debuginfo-3.10.0-1127.18.2.rt56.1116.el7.x86_64.rpm
kernel-rt-trace-devel-3.10.0-1127.18.2.rt56.1116.el7.x86_64.rpm
kernel-rt-trace-kvm-3.10.0-1127.18.2.rt56.1116.el7.x86_64.rpm
kernel-rt-trace-kvm-debuginfo-3.10.0-1127.18.2.rt56.1116.el7.x86_64.rpm

Red Hat Enterprise Linux Realtime (v. 7):

Source:
kernel-rt-3.10.0-1127.18.2.rt56.1116.el7.src.rpm

noarch:
kernel-rt-doc-3.10.0-1127.18.2.rt56.1116.el7.noarch.rpm

x86_64:
kernel-rt-3.10.0-1127.18.2.rt56.1116.el7.x86_64.rpm
kernel-rt-debug-3.10.0-1127.18.2.rt56.1116.el7.x86_64.rpm
kernel-rt-debug-debuginfo-3.10.0-1127.18.2.rt56.1116.el7.x86_64.rpm
kernel-rt-debug-devel-3.10.0-1127.18.2.rt56.1116.el7.x86_64.rpm
kernel-rt-debug-kvm-debuginfo-3.10.0-1127.18.2.rt56.1116.el7.x86_64.rpm
kernel-rt-debuginfo-3.10.0-1127.18.2.rt56.1116.el7.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-3.10.0-1127.18.2.rt56.1116.el7.x86_64.rpm
kernel-rt-devel-3.10.0-1127.18.2.rt56.1116.el7.x86_64.rpm
kernel-rt-kvm-debuginfo-3.10.0-1127.18.2.rt56.1116.el7.x86_64.rpm
kernel-rt-trace-3.10.0-1127.18.2.rt56.1116.el7.x86_64.rpm
kernel-rt-trace-debuginfo-3.10.0-1127.18.2.rt56.1116.el7.x86_64.rpm
kernel-rt-trace-devel-3.10.0-1127.18.2.rt56.1116.el7.x86_64.rpm
kernel-rt-trace-kvm-debuginfo-3.10.0-1127.18.2.rt56.1116.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-2019-19527
https://access.redhat.com/security/cve/CVE-2020-10757
https://access.redhat.com/security/cve/CVE-2020-12653
https://access.redhat.com/security/cve/CVE-2020-12654
https://access.redhat.com/security/updates/classification/#important
https://access.redhat.com/security/vulnerabilities/grub2bootloader

8. Contact:

The Red Hat security contact is <secalert at redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2020 Red Hat, Inc.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
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=FmWv
-----END PGP SIGNATURE-----