Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2019.2974
kernel-rt security and bug fix update
7 August 2019
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: kernel-rt
Publisher: Red Hat
Operating System: Red Hat Enterprise Linux Server 7
Red Hat Enterprise Linux WS/Desktop 7
Impact/Access: Root Compromise -- Existing Account
Access Privileged Data -- Existing Account
Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2019-11833 CVE-2019-11810 CVE-2019-11599
CVE-2019-7222 CVE-2019-5489 CVE-2019-3900
CVE-2019-3882 CVE-2019-3460 CVE-2019-3459
CVE-2018-18281 CVE-2018-16885 CVE-2018-16658
CVE-2018-15594 CVE-2018-14734 CVE-2018-14625
CVE-2018-13095 CVE-2018-13094 CVE-2018-13093
CVE-2018-13053 CVE-2018-10853 CVE-2018-9517
CVE-2018-9516 CVE-2018-9363 CVE-2018-8087
CVE-2018-7755
Reference: ESB-2019.2968
Original Bulletin:
https://access.redhat.com/errata/RHSA-2019:2043
- --------------------------BEGIN INCLUDED TEXT--------------------
- -----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
=====================================================================
Red Hat Security Advisory
Synopsis: Important: kernel-rt security and bug fix update
Advisory ID: RHSA-2019:2043-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2019:2043
Issue date: 2019-08-06
CVE Names: CVE-2018-7755 CVE-2018-8087 CVE-2018-9363
CVE-2018-9516 CVE-2018-9517 CVE-2018-10853
CVE-2018-13053 CVE-2018-13093 CVE-2018-13094
CVE-2018-13095 CVE-2018-14625 CVE-2018-14734
CVE-2018-15594 CVE-2018-16658 CVE-2018-16885
CVE-2018-18281 CVE-2019-3459 CVE-2019-3460
CVE-2019-3882 CVE-2019-3900 CVE-2019-5489
CVE-2019-7222 CVE-2019-11599 CVE-2019-11810
CVE-2019-11833
=====================================================================
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 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 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: vhost_net: infinite loop while receiving packets leads to DoS
(CVE-2019-3900)
* Kernel: page cache side channel attacks (CVE-2019-5489)
* kernel: Buffer overflow in hidp_process_report (CVE-2018-9363)
* kernel: l2tp: Race condition between pppol2tp_session_create() and
l2tp_eth_create() (CVE-2018-9517)
* kernel: kvm: guest userspace to guest kernel write (CVE-2018-10853)
* kernel: use-after-free Read in vhost_transport_send_pkt (CVE-2018-14625)
* kernel: use-after-free in ucma_leave_multicast in
drivers/infiniband/core/ucma.c (CVE-2018-14734)
* kernel: Mishandling of indirect calls weakens Spectre mitigation for
paravirtual guests (CVE-2018-15594)
* kernel: TLB flush happens too late on mremap (CVE-2018-18281)
* kernel: Heap address information leak while using L2CAP_GET_CONF_OPT
(CVE-2019-3459)
* kernel: Heap address information leak while using L2CAP_PARSE_CONF_RSP
(CVE-2019-3460)
* kernel: denial of service vector through vfio DMA mappings
(CVE-2019-3882)
* kernel: fix race condition between mmget_not_zero()/get_task_mm() and
core dumping (CVE-2019-11599)
* kernel: a NULL pointer dereference in
drivers/scsi/megaraid/megaraid_sas_base.c leading to DoS (CVE-2019-11810)
* kernel: fs/ext4/extents.c leads to information disclosure
(CVE-2019-11833)
* kernel: Information exposure in fd_locked_ioctl function in
drivers/block/floppy.c (CVE-2018-7755)
* kernel: Memory leak in
drivers/net/wireless/mac80211_hwsim.c:hwsim_new_radio_nl() can lead to
potential denial of service (CVE-2018-8087)
* kernel: HID: debug: Buffer overflow in hid_debug_events_read() in
drivers/hid/hid-debug.c (CVE-2018-9516)
* kernel: Integer overflow in the alarm_timer_nsleep function
(CVE-2018-13053)
* kernel: NULL pointer dereference in lookup_slow function (CVE-2018-13093)
* kernel: NULL pointer dereference in xfs_da_shrink_inode function
(CVE-2018-13094)
* kernel: NULL pointer dereference in fs/xfs/libxfs/xfs_inode_buf.c
(CVE-2018-13095)
* kernel: Information leak in cdrom_ioctl_drive_status (CVE-2018-16658)
* kernel: out-of-bound read in memcpy_fromiovecend() (CVE-2018-16885)
* Kernel: KVM: leak of uninitialized stack contents to guest
(CVE-2019-7222)
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 7.7 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/):
1553216 - CVE-2018-7755 kernel: Information exposure in fd_locked_ioctl function in drivers/block/floppy.c
1555145 - CVE-2018-8087 kernel: Memory leak in drivers/net/wireless/mac80211_hwsim.c:hwsim_new_radio_nl() can lead to potential denial of service
1573916 - kernel-rt-kvm multiversion
1589890 - CVE-2018-10853 kernel: kvm: guest userspace to guest kernel write
1593361 - Update kernel-rt timer wheel code
1597747 - CVE-2018-13053 kernel: Integer overflow in the alarm_timer_nsleep function
1597766 - CVE-2018-13093 kernel: NULL pointer dereference in lookup_slow function
1597771 - CVE-2018-13094 kernel: NULL pointer dereference in xfs_da_shrink_inode function
1597775 - CVE-2018-13095 kernel: NULL pointer dereference in fs/xfs/libxfs/xfs_inode_buf.c
1611005 - CVE-2018-14734 kernel: use-after-free in ucma_leave_multicast in drivers/infiniband/core/ucma.c
1619846 - CVE-2018-14625 kernel: use-after-free Read in vhost_transport_send_pkt
1620555 - CVE-2018-15594 kernel: Mishandling of indirect calls weakens Spectre mitigation for paravirtual guests
1623067 - CVE-2018-9363 kernel: Buffer overflow in hidp_process_report
1627731 - CVE-2018-16658 kernel: Information leak in cdrom_ioctl_drive_status
1631036 - CVE-2018-9516 kernel: HID: debug: Buffer overflow in hid_debug_events_read() in drivers/hid/hid-debug.c
1631045 - CVE-2018-9517 kernel: l2tp: Race condition between pppol2tp_session_create() and l2tp_eth_create()
1642619 - RT: update kernel-rt source tree to match RHEL 7.7 tree
1645121 - CVE-2018-18281 kernel: TLB flush happens too late on mremap
1661503 - CVE-2018-16885 kernel: out-of-bound read in memcpy_fromiovecend()
1663176 - CVE-2019-3459 kernel: Heap address information leak while using L2CAP_GET_CONF_OPT
1663179 - CVE-2019-3460 kernel: Heap address information leak while using L2CAP_PARSE_CONF_RSP
1664110 - CVE-2019-5489 Kernel: page cache side channel attacks
1664380 - BUG: scheduling while atomic: kworker/1:1/24117/0x00000002
1665278 - hrtimers: WARNING: CPU: 8 PID: 79 at kernel/hrtimer.c:1506 run_hrtimer_softirq+0x264/0x270
1671126 - NMI watchdog ineffective due to mismerge
1671930 - CVE-2019-7222 Kernel: KVM: leak of uninitialized stack contents to guest
1684745 - VM hangs on RHEL rt-kernel and OSP 13
1689426 - CVE-2019-3882 kernel: denial of service vector through vfio DMA mappings
1698757 - CVE-2019-3900 Kernel: vhost_net: infinite loop while receiving packets leads to DoS
1705937 - CVE-2019-11599 kernel: fix race condition between mmget_not_zero()/get_task_mm() and core dumping
1709164 - CVE-2019-11810 kernel: a NULL pointer dereference in drivers/scsi/megaraid/megaraid_sas_base.c leading to DoS
1712072 - CVE-2019-11833 kernel: fs/ext4/extents.c leads to information disclosure
1717212 - KVM tracebacks causing significant latency to VM
6. Package List:
Red Hat Enterprise Linux for Real Time for NFV (v. 7):
Source:
kernel-rt-3.10.0-1062.rt56.1022.el7.src.rpm
noarch:
kernel-rt-doc-3.10.0-1062.rt56.1022.el7.noarch.rpm
x86_64:
kernel-rt-3.10.0-1062.rt56.1022.el7.x86_64.rpm
kernel-rt-debug-3.10.0-1062.rt56.1022.el7.x86_64.rpm
kernel-rt-debug-debuginfo-3.10.0-1062.rt56.1022.el7.x86_64.rpm
kernel-rt-debug-devel-3.10.0-1062.rt56.1022.el7.x86_64.rpm
kernel-rt-debug-kvm-3.10.0-1062.rt56.1022.el7.x86_64.rpm
kernel-rt-debug-kvm-debuginfo-3.10.0-1062.rt56.1022.el7.x86_64.rpm
kernel-rt-debuginfo-3.10.0-1062.rt56.1022.el7.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-3.10.0-1062.rt56.1022.el7.x86_64.rpm
kernel-rt-devel-3.10.0-1062.rt56.1022.el7.x86_64.rpm
kernel-rt-kvm-3.10.0-1062.rt56.1022.el7.x86_64.rpm
kernel-rt-kvm-debuginfo-3.10.0-1062.rt56.1022.el7.x86_64.rpm
kernel-rt-trace-3.10.0-1062.rt56.1022.el7.x86_64.rpm
kernel-rt-trace-debuginfo-3.10.0-1062.rt56.1022.el7.x86_64.rpm
kernel-rt-trace-devel-3.10.0-1062.rt56.1022.el7.x86_64.rpm
kernel-rt-trace-kvm-3.10.0-1062.rt56.1022.el7.x86_64.rpm
kernel-rt-trace-kvm-debuginfo-3.10.0-1062.rt56.1022.el7.x86_64.rpm
Red Hat Enterprise Linux for Real Time (v. 7):
Source:
kernel-rt-3.10.0-1062.rt56.1022.el7.src.rpm
noarch:
kernel-rt-doc-3.10.0-1062.rt56.1022.el7.noarch.rpm
x86_64:
kernel-rt-3.10.0-1062.rt56.1022.el7.x86_64.rpm
kernel-rt-debug-3.10.0-1062.rt56.1022.el7.x86_64.rpm
kernel-rt-debug-debuginfo-3.10.0-1062.rt56.1022.el7.x86_64.rpm
kernel-rt-debug-devel-3.10.0-1062.rt56.1022.el7.x86_64.rpm
kernel-rt-debuginfo-3.10.0-1062.rt56.1022.el7.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-3.10.0-1062.rt56.1022.el7.x86_64.rpm
kernel-rt-devel-3.10.0-1062.rt56.1022.el7.x86_64.rpm
kernel-rt-trace-3.10.0-1062.rt56.1022.el7.x86_64.rpm
kernel-rt-trace-debuginfo-3.10.0-1062.rt56.1022.el7.x86_64.rpm
kernel-rt-trace-devel-3.10.0-1062.rt56.1022.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-2018-7755
https://access.redhat.com/security/cve/CVE-2018-8087
https://access.redhat.com/security/cve/CVE-2018-9363
https://access.redhat.com/security/cve/CVE-2018-9516
https://access.redhat.com/security/cve/CVE-2018-9517
https://access.redhat.com/security/cve/CVE-2018-10853
https://access.redhat.com/security/cve/CVE-2018-13053
https://access.redhat.com/security/cve/CVE-2018-13093
https://access.redhat.com/security/cve/CVE-2018-13094
https://access.redhat.com/security/cve/CVE-2018-13095
https://access.redhat.com/security/cve/CVE-2018-14625
https://access.redhat.com/security/cve/CVE-2018-14734
https://access.redhat.com/security/cve/CVE-2018-15594
https://access.redhat.com/security/cve/CVE-2018-16658
https://access.redhat.com/security/cve/CVE-2018-16885
https://access.redhat.com/security/cve/CVE-2018-18281
https://access.redhat.com/security/cve/CVE-2019-3459
https://access.redhat.com/security/cve/CVE-2019-3460
https://access.redhat.com/security/cve/CVE-2019-3882
https://access.redhat.com/security/cve/CVE-2019-3900
https://access.redhat.com/security/cve/CVE-2019-5489
https://access.redhat.com/security/cve/CVE-2019-7222
https://access.redhat.com/security/cve/CVE-2019-11599
https://access.redhat.com/security/cve/CVE-2019-11810
https://access.redhat.com/security/cve/CVE-2019-11833
https://access.redhat.com/security/updates/classification/#important
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html-single/7.7_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 2019 Red Hat, Inc.
- -----BEGIN PGP SIGNATURE-----
Version: GnuPG v1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=QJKD
- -----END PGP SIGNATURE-----
- --------------------------END INCLUDED TEXT--------------------
You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.
NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members. As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.
NOTE: This is only the original release of the security bulletin. It may
not be updated when updates to the original are made. If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.
Contact information for the authors of the original document is included
in the Security Bulletin above. If you have any questions or need further
information, please contact them directly.
Previous advisories and external security bulletins can be retrieved from:
https://www.auscert.org.au/bulletins/
===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072
Internet Email: auscert@auscert.org.au
Facsimile: (07) 3365 7031
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
AusCERT personnel answer during Queensland business hours
which are GMT+10:00 (AEST).
On call after hours for member emergencies only.
===========================================================================
-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967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=KAc7
-----END PGP SIGNATURE-----