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AUSCERT External Security Bulletin Redistribution
ESB-2020.0788
kernel security and enhancement update
4 March 2020
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: linux kernel
Publisher: Red Hat
Operating System: Red Hat Enterprise Linux Server 7
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Root Compromise -- Existing Account
Denial of Service -- Remote/Unauthenticated
Reduced Security -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2019-17666 CVE-2019-17133 CVE-2019-14895
CVE-2019-14816 CVE-2018-20976
Reference: ASB-2020.0002
ESB-2020.0693
ESB-2020.0689
ESB-2020.0415
ESB-2020.0262
Original Bulletin:
https://access.redhat.com/errata/RHSA-2020:0661
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Red Hat Security Advisory
Synopsis: Important: kernel security and enhancement update
Advisory ID: RHSA-2020:0661-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:0661
Issue date: 2020-03-03
CVE Names: CVE-2018-20976 CVE-2019-14816 CVE-2019-14895
CVE-2019-17133 CVE-2019-17666
=====================================================================
1. Summary:
An update for kernel is now available for Red Hat Enterprise Linux 7.2
Advanced Update Support.
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 Server AUS (v. 7.2) - noarch, x86_64 Red Hat
Enterprise Linux Server Optional AUS (v. 7.2) - x86_64
3. Description:
The kernel packages contain the Linux kernel, the core of any Linux operating
system.
Security Fix(es):
* kernel: use-after-free in fs/xfs/xfs_super.c (CVE-2018-20976)
* kernel: heap overflow in mwifiex_update_vs_ie() function of Marvell WiFi
driver (CVE-2019-14816)
* kernel: heap-based buffer overflow in mwifiex_process_country_ie() function
in drivers/net/wireless/marvell/mwifiex/sta_ioctl.c (CVE-2019-14895)
* kernel: buffer overflow in cfg80211_mgd_wext_giwessid in
net/wireless/wext-sme.c (CVE-2019-17133)
* 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)
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.
Enhancement(s):
* Selective backport: perf: Sync with upstream v4.16 (BZ#1782748)
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/):
1743547 - CVE-2018-20976 kernel: use-after-free in fs/xfs/xfs_super.c
1744149 - CVE-2019-14816 kernel: heap overflow in mwifiex_update_vs_ie() function of Marvell WiFi driver
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
1771909 - CVE-2019-17133 kernel: buffer overflow in cfg80211_mgd_wext_giwessid in net/wireless/wext-sme.c
1774870 - CVE-2019-14895 kernel: heap-based buffer overflow in mwifiex_process_country_ie() function in drivers/net/wireless/marvell/mwifiex/sta_ioctl.c
6. Package List:
Red Hat Enterprise Linux Server AUS (v. 7.2):
Source:
kernel-3.10.0-327.85.1.el7.src.rpm
noarch:
kernel-abi-whitelists-3.10.0-327.85.1.el7.noarch.rpm
kernel-doc-3.10.0-327.85.1.el7.noarch.rpm
x86_64: kernel-3.10.0-327.85.1.el7.x86_64.rpm
kernel-debug-3.10.0-327.85.1.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-327.85.1.el7.x86_64.rpm
kernel-debug-devel-3.10.0-327.85.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-327.85.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-327.85.1.el7.x86_64.rpm
kernel-devel-3.10.0-327.85.1.el7.x86_64.rpm
kernel-headers-3.10.0-327.85.1.el7.x86_64.rpm
kernel-tools-3.10.0-327.85.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-327.85.1.el7.x86_64.rpm
kernel-tools-libs-3.10.0-327.85.1.el7.x86_64.rpm
perf-3.10.0-327.85.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-327.85.1.el7.x86_64.rpm
python-perf-3.10.0-327.85.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-327.85.1.el7.x86_64.rpm
Red Hat Enterprise Linux Server Optional AUS (v. 7.2):
x86_64: kernel-debug-debuginfo-3.10.0-327.85.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-327.85.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-327.85.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-327.85.1.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-327.85.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-327.85.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-327.85.1.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-2018-20976
https://access.redhat.com/security/cve/CVE-2019-14816
https://access.redhat.com/security/cve/CVE-2019-14895
https://access.redhat.com/security/cve/CVE-2019-17133
https://access.redhat.com/security/cve/CVE-2019-17666
https://access.redhat.com/security/updates/classification/#important
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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