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RedHat Enterprise Linux 7: RHSA-2020:4007-01 Low: Systemd Memory Leak

red hat
Calendar Grey September 29, 2020
Dist Redhat Esm H88
Red Hat issues a minor security advisory related to systemd patch for RHEL 7, targeting a memory leak bug. Discover remedies here.
An update for systemd 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

Summary

The systemd packages contain systemd, a system and service manager for Linux, compatible with the SysV and LSB init scripts. It provides aggressive parallelism capabilities, uses socket and D-Bus activation for starting services, offers on-demand starting of daemons, and keeps track of processes using Linux cgroups. In addition, it supports snapshotting and restoring of the system state, maintains mount and automount points, and implements an elaborate transactional dependency-based service control logic. It can also work as a drop-in replacement for sysvinit.
Security Fix(es):
* systemd: memory leak in button_open() in login/logind-button.c when udev events are received (CVE-2019-20386)
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 7.9 Release Notes linked from the References section.

Topics%20covered

Topics Covered

security advisory bug fix security patch memory leak low severity red hat enterprise linux systemd update

References

https://access.redhat.com/security/cve/CVE-2019-20386 https://access.redhat.com/security/updates/classification/#low https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/7.9_release_notes/index

Package List

Red Hat Enterprise Linux Client (v. 7):
Source: systemd-219-78.el7.src.rpm
x86_64: libgudev1-219-78.el7.i686.rpm libgudev1-219-78.el7.x86_64.rpm systemd-219-78.el7.x86_64.rpm systemd-debuginfo-219-78.el7.i686.rpm systemd-debuginfo-219-78.el7.x86_64.rpm systemd-libs-219-78.el7.i686.rpm systemd-libs-219-78.el7.x86_64.rpm systemd-python-219-78.el7.x86_64.rpm systemd-sysv-219-78.el7.x86_64.rpm
Red Hat Enterprise Linux Client Optional (v. 7):
x86_64: libgudev1-devel-219-78.el7.i686.rpm libgudev1-devel-219-78.el7.x86_64.rpm systemd-debuginfo-219-78.el7.i686.rpm systemd-debuginfo-219-78.el7.x86_64.rpm systemd-devel-219-78.el7.i686.rpm systemd-devel-219-78.el7.x86_64.rpm systemd-journal-gateway-219-78.el7.x86_64.rpm systemd-networkd-219-78.el7.x86_64.rpm systemd-resolved-219-78.el7.i686.rpm systemd-resolved-219-78.el7.x86_64.rpm
Red Hat Enterprise Linux ComputeNode (v. 7):
Source: systemd-219-78.el7.src.rpm
x86_64: libgudev1-219-78.el7.i686.rpm libgudev1-219-78.el7.x86_64.rpm systemd-219-78.el7.x86_64.rpm systemd-debuginfo-219-78.el7.i686.rpm systemd-debuginfo-219-78.el7.x86_64.rpm systemd-libs-219-78.el7.i686.rpm systemd-libs-219-78.el7.x86_64.rpm systemd-python-219-78.el7.x86_64.rpm systemd-sysv-219-78.el7.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional (v. 7):
x86_64:

Read the Full Advisory


Severity
low
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2020:4007-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:4007
Issue date: 2020-09-29

Topic

An update for systemd is now available for Red Hat Enterprise Linux 7.Red Hat Product Security has rated this update as having a security impactof Low. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory bug fix security patch memory leak low severity red hat enterprise linux systemd update

Relevant Releases Architectures

Red Hat Enterprise Linux Client (v. 7) - x86_64

Red Hat Enterprise Linux Client Optional (v. 7) - x86_64

Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64

Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64

Red Hat Enterprise Linux Server (v. 7) - ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Workstation (v. 7) - x86_64

Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64

Bugs Fixed

1244691 - systemd journal remote service does not work when multiple virtual machines send logs via journal upload service

1679934 - Spurious "Failed to propagate agent release message" messages on shutdown

1689344 - please add kptr_restrict=1 to /usr/lib/sysctl.conf/50-default.conf

1693374 - Using quotas on iSCSI-hosed filesystems causes systemd "ordering cycle" resulting in random services not starting on boot

1757704 - Restarting systemd-journald to load new configurations causes other daemons stop working

1766477 - Systemd does not attempt to kill child processes if ExecStopPost is set

1769923 - timer: don't use persistent file timestamps from the future

1769928 - systemd leaks memory (in dbus) and spends its time sending PropertiesChanged notifications

1770158 - sd-bus: bump message queue size

1775291 - Services with Restart=always fail to restart when it has a dependent service with StopWhenUnneeded=true

1793979 - CVE-2019-20386 systemd: memory leak in button_open() in login/logind-button.c when udev events are received

1804757 - Mount units end up in erroneous state (not-found active mounted) after daemon reload

1809053 - [Azure][RHEL7.6]Inconsistent creation of symlinks in /dev/disk/by-path in Azure VMs

Read the Full Advisory

1817576 - Backport systemd CollectMode for runc

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