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

Synopsis:          Moderate: kernel-rt security and bug fix update
Advisory ID:       RHSA-2020:1070-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2020:1070
Issue date:        2020-03-31
CVE Names:         CVE-2015-9289 CVE-2017-17807 CVE-2018-7191
                   CVE-2018-19985 CVE-2018-20169 CVE-2019-3901
                   CVE-2019-9503 CVE-2019-10207 CVE-2019-10638
                   CVE-2019-10639 CVE-2019-11190 CVE-2019-11884
                   CVE-2019-12382 CVE-2019-13233 CVE-2019-14283
                   CVE-2019-15916 CVE-2019-16746
====================================================================
1. Summary:

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 Moderate. 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 for Real Time (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: out of bound read in DVB connexant driver. (CVE-2015-9289)

* kernel: Missing permissions check for request_key() destination allows
local attackers to add keys to keyring without Write permission
(CVE-2017-17807)

* kernel: denial of service via ioctl call in network tun handling
(CVE-2018-7191)

* kernel: usb: missing size check in the __usb_get_extra_descriptor()
leading to DoS (CVE-2018-20169)

* kernel: perf_event_open() and execve() race in setuid programs allows a
data leak (CVE-2019-3901)

* kernel: brcmfmac frame validation bypass (CVE-2019-9503)

* kernel: null-pointer dereference in hci_uart_set_flow_control
(CVE-2019-10207)

* kernel: sensitive information disclosure from kernel stack memory via
HIDPCONNADD command (CVE-2019-11884)

* kernel: unchecked kstrdup of fwstr in drm_load_edid_firmware leads to
denial of service (CVE-2019-12382)

* kernel: use-after-free in arch/x86/lib/insn-eval.c (CVE-2019-13233)

* kernel: integer overflow and OOB read in drivers/block/floppy.c
(CVE-2019-14283)

* kernel: memory leak in register_queue_kobjects() in net/core/net-sysfs.c
leads to denial of service (CVE-2019-15916)

* kernel: buffer-overflow hardening in WiFi beacon validation code.
(CVE-2019-16746)

* kernel: oob memory read in hso_probe in drivers/net/usb/hso.c
(CVE-2018-19985)

* Kernel: net: weak IP ID generation leads to remote device tracking
(CVE-2019-10638)

* Kernel: net: using kernel space address bits to derive IP ID may
potentially break KASLR (CVE-2019-10639)

* kernel: ASLR bypass for setuid binaries due to late install_exec_creds()
(CVE-2019-11190)

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.

Additional Changes:

For detailed information on changes in this release, see the Red Hat
Enterprise Linux 7.8 Release Notes linked from 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

The system must be rebooted for this update to take effect.

5. Bugs fixed (https://bugzilla.redhat.com/):

1528335 - CVE-2017-17807 kernel: Missing permissions check for request_key() destination allows local attackers to add keys to keyring without Write permission
1550584 - spurious ktimersoftd wake ups increases latency (rhel-rt 7)
1660385 - CVE-2018-20169 kernel: usb: missing size check in the __usb_get_extra_descriptor() leading to DoS
1666106 - CVE-2018-19985 kernel: oob memory read in hso_probe in drivers/net/usb/hso.c
1690543 - 8 vCPU guest need max latency < 20 us with stress
1696087 - BUG: scheduling while atomic in zswap
1699438 - add_timer_on on remote CPUs not firing
1699856 - CVE-2019-11190 kernel: ASLR bypass for setuid binaries due to late install_exec_creds()
1701245 - CVE-2019-3901 kernel: perf_event_open() and execve() race in setuid programs allows a data leak
1701842 - CVE-2019-9503 kernel: brcmfmac frame validation bypass
1708718 - RT: update kernel-rt source tree to match RHEL 7.8 tree
1709837 - CVE-2019-11884 kernel: sensitive information disclosure from kernel stack memory via HIDPCONNADD command
1715554 - CVE-2019-12382 kernel: unchecked kstrdup of fwstr in drm_load_edid_firmware leads to denial of service
1716328 - CVE-2018-7191 kernel: denial of service via ioctl call in network tun handling
1727756 - CVE-2019-13233 kernel: use-after-free in arch/x86/lib/insn-eval.c
1729931 - CVE-2019-10638 Kernel: net: weak IP ID generation leads to remote device tracking
1729933 - CVE-2019-10639 Kernel: net: using kernel space address bits to derive IP ID may potentially break KASLR
1733874 - CVE-2019-10207 kernel: null-pointer dereference in hci_uart_set_flow_control
1734243 - CVE-2019-14283 kernel: integer overflow and OOB read in drivers/block/floppy.c
1735655 - CVE-2015-9289 kernel: out of bound read in DVB connexant driver.
1741775 - crypto_rfc4543_encrypt: BUG: sleeping function called from invalid context at kernel/rtmutex.c:883
1750813 - CVE-2019-15916 kernel: memory leak in register_queue_kobjects() in net/core/net-sysfs.c leads to denial of service
1751083 - kernel:unregister_netdevice: waiting for veth0_client to become free. Usage count = 1
1760306 - CVE-2019-16746 kernel: buffer-overflow hardening in WiFi beacon validation code.
1772894 - kvm nx_huge_pages_recovery_ratio=0 is needed to meet KVM-RT low latency requirement

6. Package List:

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

Source:
kernel-rt-3.10.0-1127.rt56.1093.el7.src.rpm

noarch:
kernel-rt-doc-3.10.0-1127.rt56.1093.el7.noarch.rpm

x86_64:
kernel-rt-3.10.0-1127.rt56.1093.el7.x86_64.rpm
kernel-rt-debug-3.10.0-1127.rt56.1093.el7.x86_64.rpm
kernel-rt-debug-debuginfo-3.10.0-1127.rt56.1093.el7.x86_64.rpm
kernel-rt-debug-devel-3.10.0-1127.rt56.1093.el7.x86_64.rpm
kernel-rt-debug-kvm-3.10.0-1127.rt56.1093.el7.x86_64.rpm
kernel-rt-debug-kvm-debuginfo-3.10.0-1127.rt56.1093.el7.x86_64.rpm
kernel-rt-debuginfo-3.10.0-1127.rt56.1093.el7.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-3.10.0-1127.rt56.1093.el7.x86_64.rpm
kernel-rt-devel-3.10.0-1127.rt56.1093.el7.x86_64.rpm
kernel-rt-kvm-3.10.0-1127.rt56.1093.el7.x86_64.rpm
kernel-rt-kvm-debuginfo-3.10.0-1127.rt56.1093.el7.x86_64.rpm
kernel-rt-trace-3.10.0-1127.rt56.1093.el7.x86_64.rpm
kernel-rt-trace-debuginfo-3.10.0-1127.rt56.1093.el7.x86_64.rpm
kernel-rt-trace-devel-3.10.0-1127.rt56.1093.el7.x86_64.rpm
kernel-rt-trace-kvm-3.10.0-1127.rt56.1093.el7.x86_64.rpm
kernel-rt-trace-kvm-debuginfo-3.10.0-1127.rt56.1093.el7.x86_64.rpm

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

Source:
kernel-rt-3.10.0-1127.rt56.1093.el7.src.rpm

noarch:
kernel-rt-doc-3.10.0-1127.rt56.1093.el7.noarch.rpm

x86_64:
kernel-rt-3.10.0-1127.rt56.1093.el7.x86_64.rpm
kernel-rt-debug-3.10.0-1127.rt56.1093.el7.x86_64.rpm
kernel-rt-debug-debuginfo-3.10.0-1127.rt56.1093.el7.x86_64.rpm
kernel-rt-debug-devel-3.10.0-1127.rt56.1093.el7.x86_64.rpm
kernel-rt-debug-kvm-debuginfo-3.10.0-1127.rt56.1093.el7.x86_64.rpm
kernel-rt-debuginfo-3.10.0-1127.rt56.1093.el7.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-3.10.0-1127.rt56.1093.el7.x86_64.rpm
kernel-rt-devel-3.10.0-1127.rt56.1093.el7.x86_64.rpm
kernel-rt-kvm-debuginfo-3.10.0-1127.rt56.1093.el7.x86_64.rpm
kernel-rt-trace-3.10.0-1127.rt56.1093.el7.x86_64.rpm
kernel-rt-trace-debuginfo-3.10.0-1127.rt56.1093.el7.x86_64.rpm
kernel-rt-trace-devel-3.10.0-1127.rt56.1093.el7.x86_64.rpm
kernel-rt-trace-kvm-debuginfo-3.10.0-1127.rt56.1093.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-2015-9289
https://access.redhat.com/security/cve/CVE-2017-17807
https://access.redhat.com/security/cve/CVE-2018-7191
https://access.redhat.com/security/cve/CVE-2018-19985
https://access.redhat.com/security/cve/CVE-2018-20169
https://access.redhat.com/security/cve/CVE-2019-3901
https://access.redhat.com/security/cve/CVE-2019-9503
https://access.redhat.com/security/cve/CVE-2019-10207
https://access.redhat.com/security/cve/CVE-2019-10638
https://access.redhat.com/security/cve/CVE-2019-10639
https://access.redhat.com/security/cve/CVE-2019-11190
https://access.redhat.com/security/cve/CVE-2019-11884
https://access.redhat.com/security/cve/CVE-2019-12382
https://access.redhat.com/security/cve/CVE-2019-13233
https://access.redhat.com/security/cve/CVE-2019-14283
https://access.redhat.com/security/cve/CVE-2019-15916
https://access.redhat.com/security/cve/CVE-2019-16746
https://access.redhat.com/security/updates/classification/#moderate
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/7.8_release_notes/index

8. Contact:

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

Copyright 2020 Red Hat, Inc.
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