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Debian: DSA-2021-1234-1 Critical: Kernel-RT Memory Leak

red hat
Calendar Grey March 16, 2021
Dist Redhat Esm H88
Critical patch released for CentOS, tackling remote execution vulnerabilities and security flaws. Update your system today!
An update for kernel-rt 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-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.
Security Fix(es):
* kernel: Local buffer overflow in ctnetlink_parse_tuple_filter in net/netfilter/nf_conntrack_netlink.c (CVE-2020-25211)
* kernel: SCSI target (LIO) write to any block on ILO backstore (CVE-2020-28374)
* kernel: locking issue in drivers/tty/tty_jobctrl.c can lead to an use-after-free (CVE-2020-29661)
* kernel: malicious USB devices can lead to multiple out-of-bounds write (CVE-2019-19532)
* kernel: out-of-bounds reads in pinctrl subsystem. (CVE-2020-0427)
* kernel: use-after-free in i915_ppgtt_close in drivers/gpu/drm/i915/i915_gem_gtt.c (CVE-2020-7053)
* kernel: performance counters race condition use-after-free (CVE-2020-14351)
* kernel: Geneve/IPsec traffic may be unencrypted between two Geneve endpoints (CVE-2020-25645)
* kernel: use-after-free in read in vt_do_kdgkb_ioctl (CVE-2020-25656)
* kernel: ICMP rate limiting can be used for DNS poisoning attack (CVE-2020-25705)
* kernel: increase slab leak leads to DoS (CVE-2021-20265)
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):
* kernel-rt: update to the latest RHEL7.9.z4 source tree (BZ#1917909)

Topics%20covered

Topics Covered

security advisory security update Red Hat buffer overflow bug fix DoS Red Hat Enterprise Linux important DoS risk kernel-rt real time

References

https://access.redhat.com/security/cve/CVE-2019-19532 https://access.redhat.com/security/cve/CVE-2020-0427 https://access.redhat.com/security/cve/CVE-2020-7053 https://access.redhat.com/security/cve/CVE-2020-14351 https://access.redhat.com/security/cve/CVE-2020-25211 https://access.redhat.com/security/cve/CVE-2020-25645 https://access.redhat.com/security/cve/CVE-2020-25656 https://access.redhat.com/security/cve/CVE-2020-25705 https://access.redhat.com/security/cve/CVE-2020-28374 https://access.redhat.com/security/cve/CVE-2020-29661 https://access.redhat.com/security/cve/CVE-2021-20265 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux for Real Time for NFV (v. 7):
Source: kernel-rt-3.10.0-1160.21.1.rt56.1158.el7.src.rpm
noarch: kernel-rt-doc-3.10.0-1160.21.1.rt56.1158.el7.noarch.rpm
x86_64: kernel-rt-3.10.0-1160.21.1.rt56.1158.el7.x86_64.rpm kernel-rt-debug-3.10.0-1160.21.1.rt56.1158.el7.x86_64.rpm kernel-rt-debug-debuginfo-3.10.0-1160.21.1.rt56.1158.el7.x86_64.rpm kernel-rt-debug-devel-3.10.0-1160.21.1.rt56.1158.el7.x86_64.rpm kernel-rt-debug-kvm-3.10.0-1160.21.1.rt56.1158.el7.x86_64.rpm kernel-rt-debug-kvm-debuginfo-3.10.0-1160.21.1.rt56.1158.el7.x86_64.rpm kernel-rt-debuginfo-3.10.0-1160.21.1.rt56.1158.el7.x86_64.rpm kernel-rt-debuginfo-common-x86_64-3.10.0-1160.21.1.rt56.1158.el7.x86_64.rpm kernel-rt-devel-3.10.0-1160.21.1.rt56.1158.el7.x86_64.rpm kernel-rt-kvm-3.10.0-1160.21.1.rt56.1158.el7.x86_64.rpm kernel-rt-kvm-debuginfo-3.10.0-1160.21.1.rt56.1158.el7.x86_64.rpm kernel-rt-trace-3.10.0-1160.21.1.rt56.1158.el7.x86_64.rpm kernel-rt-trace-debuginfo-3.10.0-1160.21.1.rt56.1158.el7.x86_64.rpm kernel-rt-trace-devel-3.10.0-1160.21.1.rt56.1158.el7.x86_64.rpm kernel-rt-trace-kvm-3.10.0-1160.21.1.rt56.1158.el7.x86_64.rpm kernel-rt-trace-kvm-debuginfo-3.10.0-1160.21.1.rt56.1158.el7.x86_64.rpm
Red Hat Enterprise Linux for Real Time (v. 7):
Source:

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2021:0857-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:0857
Issue date: 2021-03-16

Topic

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 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 security update Red Hat buffer overflow bug fix DoS Red Hat Enterprise Linux important DoS risk kernel-rt real time

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

Bugs Fixed

1781821 - CVE-2019-19532 kernel: malicious USB devices can lead to multiple out-of-bounds write

1795624 - CVE-2020-7053 kernel: use-after-free in i915_ppgtt_close in drivers/gpu/drm/i915/i915_gem_gtt.c

1862849 - CVE-2020-14351 kernel: performance counters race condition use-after-free

1877571 - CVE-2020-25211 kernel: Local buffer overflow in ctnetlink_parse_tuple_filter in net/netfilter/nf_conntrack_netlink.c

1883988 - CVE-2020-25645 kernel: Geneve/IPsec traffic may be unencrypted between two Geneve endpoints

1888726 - CVE-2020-25656 kernel: use-after-free in read in vt_do_kdgkb_ioctl

1894579 - CVE-2020-25705 kernel: ICMP rate limiting can be used for DNS poisoning attack

1899804 - CVE-2020-28374 kernel: SCSI target (LIO) write to any block on ILO backstore

1906525 - CVE-2020-29661 kernel: locking issue in drivers/tty/tty_jobctrl.c can lead to an use-after-free

1908827 - CVE-2021-20265 kernel: increase slab leak leads to DoS

1919893 - CVE-2020-0427 kernel: out-of-bounds reads in pinctrl subsystem.

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