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RedHat RHSA-2019-3309 Important: Kernel-Rt Security Issues and Fixes

red hat
Calendar Grey November 5, 2019
Dist Redhat Esm H88
Delve into the significant kernel-rt enhancement from Red Hat that responds to critical vulnerabilities, reinforcing system safety while optimizing operational efficiency.
An update for kernel-rt is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Important

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.

Summary

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: nfs: use-after-free in svc_process_common() (CVE-2018-16884)
* Kernel: vhost_net: infinite loop while receiving packets leads to DoS (CVE-2019-3900)
* Kernel: page cache side channel attacks (CVE-2019-5489)
* hardware: bluetooth: BR/EDR encryption key negotiation attacks (KNOB) (CVE-2019-9506)
* kernel: Heap overflow in mwifiex_uap_parse_tail_ies function in drivers/net/wireless/marvell/mwifiex/ie.c (CVE-2019-10126)
* Kernel: KVM: OOB memory access via mmio ring buffer (CVE-2019-14821)
* kernel: Information Disclosure in crypto_report_one in crypto/crypto_user.c (CVE-2018-19854)
* kernel: usb: missing size check in the __usb_get_extra_descriptor() leading to DoS (CVE-2018-20169)
* 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: SCTP socket buffer memory leak leading to denial of service (CVE-2019-3874)
* kernel: denial of service vector through vfio DMA mappings (CVE-2019-3882)
* kernel: null-pointer dereference in hci_uart_set_flow_control (CVE-2019-10207)
* kernel: fix race condition between mmget_not_zero()/get_task_mm() and core dumping (CVE-2019-11599)
* kernel: fs/ext4/extents.c leads to information disclosure (CVE-2019-11833)
* kernel: sensitive information disclosure from kernel stack memory via HIDPCONNADD command (CVE-2019-11884)
* kernel: use-after-free in arch/x86/lib/insn-eval.c (CVE-2019-13233)
* kernel: memory leak in register_queue_kobjects() in net/core/net-sysfs.c leads to denial of service (CVE-2019-15916)
* kernel: oob memory read in hso_probe in drivers/net/usb/hso.c (CVE-2018-19985)
* Kernel: KVM: leak of uninitialized stack contents to guest (CVE-2019-7222)
* Kernel: net: weak IP ID generation leads to remote device tracking (CVE-2019-10638)
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 8.1 Release Notes linked from the References section.

Topics%20covered

Topics Covered

security advisory denial of service red hat important information disclosure kernel-rt

References

https://access.redhat.com/security/cve/CVE-2018-16884 https://access.redhat.com/security/cve/CVE-2018-19854 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-2019-3459 https://access.redhat.com/security/cve/CVE-2019-3460 https://access.redhat.com/security/cve/CVE-2019-3874 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-2019-9506 https://access.redhat.com/security/cve/CVE-2019-10126 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-2019-11599 https://access.redhat.com/security/cve/CVE-2019-11833 https://access.redhat.com/security/cve/CVE-2019-11884 https://access.redhat.com/security/cve/CVE-2019-13233 https://access.redhat.com/security/cve/CVE-2019-14821 https://access.redhat.com/security/cve/CVE-2019-15916 https://access.redhat.com/security/updates/classification/#important Read the Full Advisory

Package List

Red Hat Enterprise Linux Real Time for NFV (v. 8):
Source: kernel-rt-4.18.0-147.rt24.93.el8.src.rpm
x86_64: kernel-rt-4.18.0-147.rt24.93.el8.x86_64.rpm kernel-rt-core-4.18.0-147.rt24.93.el8.x86_64.rpm kernel-rt-debug-4.18.0-147.rt24.93.el8.x86_64.rpm kernel-rt-debug-core-4.18.0-147.rt24.93.el8.x86_64.rpm kernel-rt-debug-debuginfo-4.18.0-147.rt24.93.el8.x86_64.rpm kernel-rt-debug-devel-4.18.0-147.rt24.93.el8.x86_64.rpm kernel-rt-debug-kvm-4.18.0-147.rt24.93.el8.x86_64.rpm kernel-rt-debug-kvm-debuginfo-4.18.0-147.rt24.93.el8.x86_64.rpm kernel-rt-debug-modules-4.18.0-147.rt24.93.el8.x86_64.rpm kernel-rt-debug-modules-extra-4.18.0-147.rt24.93.el8.x86_64.rpm kernel-rt-debuginfo-4.18.0-147.rt24.93.el8.x86_64.rpm kernel-rt-debuginfo-common-x86_64-4.18.0-147.rt24.93.el8.x86_64.rpm kernel-rt-devel-4.18.0-147.rt24.93.el8.x86_64.rpm kernel-rt-kvm-4.18.0-147.rt24.93.el8.x86_64.rpm kernel-rt-kvm-debuginfo-4.18.0-147.rt24.93.el8.x86_64.rpm kernel-rt-modules-4.18.0-147.rt24.93.el8.x86_64.rpm kernel-rt-modules-extra-4.18.0-147.rt24.93.el8.x86_64.rpm
Red Hat Enterprise Linux Real Time (v. 8):
Source: kernel-rt-4.18.0-147.rt24.93.el8.src.rpm
x86_64: kernel-rt-4.18.0-147.rt24.93.el8.x86_64.rpm kernel-rt-core-4.18.0-147.rt24.93.el8.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2019:3309-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2019:3309
Issue date: 2019-11-05

Topic

An update for kernel-rt is now available for Red Hat Enterprise Linux 8.

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.

Topics%20covered

Topics Covered

security advisory denial of service red hat important information disclosure kernel-rt

Relevant Releases Architectures

Red Hat Enterprise Linux Real Time (v. 8) - x86_64

Red Hat Enterprise Linux Real Time for NFV (v. 8) - x86_64

Bugs Fixed

1656986 - CVE-2018-19854 kernel: Information Disclosure in crypto_report_one in crypto/crypto_user.c

1660375 - CVE-2018-16884 kernel: nfs: use-after-free in svc_process_common()

1660385 - CVE-2018-20169 kernel: usb: missing size check in the __usb_get_extra_descriptor() leading to DoS

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

1666106 - CVE-2018-19985 kernel: oob memory read in hso_probe in drivers/net/usb/hso.c

1671930 - CVE-2019-7222 Kernel: KVM: leak of uninitialized stack contents to guest

1678887 - RT: update RT source tree to the RHEL-8.1 tree

1686373 - CVE-2019-3874 kernel: SCTP socket buffer memory leak leading to denial of service

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

1700666 - Make kernel-rt require rt-setup

1705937 - CVE-2019-11599 kernel: fix race condition between mmget_not_zero()/get_task_mm() and core dumping

1709837 - CVE-2019-11884 kernel: sensitive information disclosure from kernel stack memory via HIDPCONNADD command

1712072 - CVE-2019-11833 kernel: fs/ext4/extents.c leads to information disclosure

Read the Full Advisory

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