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RedHat: RHSA-2020-0740-01 Important: Multiple Kernel Security Issues

red hat
Calendar Grey March 9, 2020
Dist Redhat Esm H88
A crucial kernel-alt security patch has been released for Red Hat Enterprise Linux 7. Find out more information here!
An update for kernel-alt is now available for Red Hat Enterprise Linux 7

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-alt packages provide the Linux kernel version 4.x.
Security Fix(es):
* kernel: rtl_p2p_noa_ie in drivers/net/wireless/realtek/rtlwifi/ps.c in the Linux kernel lacks a certain upper-bound check, leading to a buffer overflow (CVE-2019-17666)
* kernel: nfs: NULL pointer dereference due to an anomalized NFS message sequence (CVE-2018-16871)
* 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: sensitive information disclosure from kernel stack memory via HIDPCONNADD command (CVE-2019-11884)
* kernel: powerpc: local user can read vector registers of other users' processes via a Facility Unavailable exception (CVE-2019-15030)
* kernel: memory leak in register_queue_kobjects() in net/core/net-sysfs.c leads to denial of service (CVE-2019-15916)
* kernel: integer overflow in tcp_ack_update_rtt in net/ipv4/tcp_input.c (CVE-2019-18805)
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):
* lpfc: NVMe/FC target test machine rhel-storage-62 crashes on boot when connected to FC switch (BZ#1623205)
* kernel BUG at fs/nfs_common/grace.c:107! (BZ#1637543)
* RHEL-Alt-7.6 - Need a fix for kernel bug cap_inode_getsecurity: use d_find_any_alias() instead of d_find_alias() (BZ#1711934)
* Backport "fs/dcache.c: add cond_resched() in shrink_dentry_list()" (32785c0539b7) [rhel-alt-7.6.z] (BZ#1758861)
* [RHEL-ALT-7.6.z][arm64] iommu/iova: Fix tracking of recently failed iova address (BZ#1780500)

Topics%20covered

Topics Covered

security advisory denial of service buffer overflow Red Hat Enterprise Linux security impact information disclosure kernel-alt

References

https://access.redhat.com/security/cve/CVE-2018-16871 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-2019-11884 https://access.redhat.com/security/cve/CVE-2019-15030 https://access.redhat.com/security/cve/CVE-2019-15916 https://access.redhat.com/security/cve/CVE-2019-17666 https://access.redhat.com/security/cve/CVE-2019-18805 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7):
Source: kernel-alt-4.14.0-115.18.1.el7a.src.rpm
aarch64: kernel-4.14.0-115.18.1.el7a.aarch64.rpm kernel-debug-4.14.0-115.18.1.el7a.aarch64.rpm kernel-debug-debuginfo-4.14.0-115.18.1.el7a.aarch64.rpm kernel-debug-devel-4.14.0-115.18.1.el7a.aarch64.rpm kernel-debuginfo-4.14.0-115.18.1.el7a.aarch64.rpm kernel-debuginfo-common-aarch64-4.14.0-115.18.1.el7a.aarch64.rpm kernel-devel-4.14.0-115.18.1.el7a.aarch64.rpm kernel-headers-4.14.0-115.18.1.el7a.aarch64.rpm kernel-tools-4.14.0-115.18.1.el7a.aarch64.rpm kernel-tools-debuginfo-4.14.0-115.18.1.el7a.aarch64.rpm kernel-tools-libs-4.14.0-115.18.1.el7a.aarch64.rpm perf-4.14.0-115.18.1.el7a.aarch64.rpm perf-debuginfo-4.14.0-115.18.1.el7a.aarch64.rpm python-perf-4.14.0-115.18.1.el7a.aarch64.rpm python-perf-debuginfo-4.14.0-115.18.1.el7a.aarch64.rpm
noarch: kernel-abi-whitelists-4.14.0-115.18.1.el7a.noarch.rpm kernel-doc-4.14.0-115.18.1.el7a.noarch.rpm
ppc64le: kernel-4.14.0-115.18.1.el7a.ppc64le.rpm kernel-bootwrapper-4.14.0-115.18.1.el7a.ppc64le.rpm kernel-debug-4.14.0-115.18.1.el7a.ppc64le.rpm kernel-debug-debuginfo-4.14.0-115.18.1.el7a.ppc64le.rpm kernel-debuginfo-4.14.0-115.18.1.el7a.ppc64le.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2020:0740-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:0740
Issue date: 2020-03-09

Topic

An update for kernel-alt is now available for Red Hat Enterprise Linux 7.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory denial of service buffer overflow Red Hat Enterprise Linux security impact information disclosure kernel-alt

Relevant Releases Architectures

Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) - aarch64, noarch, ppc64le, s390x

Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) - aarch64, noarch, ppc64le

Bugs Fixed

1655162 - CVE-2018-16871 kernel: nfs: NULL pointer dereference due to an anomalized NFS message sequence

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

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

1750813 - CVE-2019-15916 kernel: memory leak in register_queue_kobjects() in net/core/net-sysfs.c leads to denial of service

1759313 - CVE-2019-15030 kernel: powerpc: local user can read vector registers of other users' processes via a Facility Unavailable exception

1763690 - CVE-2019-17666 kernel: rtl_p2p_noa_ie in drivers/net/wireless/realtek/rtlwifi/ps.c in the Linux kernel lacks a certain upper-bound check, leading to a buffer overflow

1771496 - CVE-2019-18805 kernel: integer overflow in tcp_ack_update_rtt in net/ipv4/tcp_input.c

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