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Vulnerability of Linux kernel: denial of service via CIPSO

Synthesis of the vulnerability 

An attacker can send malicious CIPSO packets to a Linux host, in order to trigger a denial of service.
Vulnerable systems: Debian, Fedora, Junos Space, Linux, openSUSE Leap, RHEL, Slackware, SUSE Linux Enterprise Desktop, SLES, Ubuntu.
Severity of this threat: 2/4.
Creation date: 12/05/2020.
Références of this weakness: CERTFR-2020-AVI-281, CERTFR-2020-AVI-295, CERTFR-2020-AVI-306, CERTFR-2020-AVI-311, CERTFR-2020-AVI-320, CERTFR-2020-AVI-355, CERTFR-2020-AVI-368, CERTFR-2020-AVI-369, CERTFR-2020-AVI-376, CERTFR-2020-AVI-421, CERTFR-2020-AVI-462, CERTFR-2020-AVI-489, CERTFR-2020-AVI-547, CVE-2020-10711, DLA-2242-1, DSA-4698-1, DSA-4699-1, FEDORA-2020-4336d63533, FEDORA-2020-5a69decc0c, FEDORA-2020-c6b9fff7f8, JSA11110, openSUSE-SU-2020:0801-1, openSUSE-SU-2020:0935-1, openSUSE-SU-2021:0242-1, RHSA-2020:2082-01, RHSA-2020:2085-01, RHSA-2020:2102-01, RHSA-2020:2103-01, RHSA-2020:2104-01, RHSA-2020:2125-01, RHSA-2020:2171-01, RHSA-2020:2199-01, RHSA-2020:2203-01, RHSA-2020:2214-01, RHSA-2020:2242-01, RHSA-2020:2277-01, RHSA-2020:2285-01, RHSA-2020:2289-01, RHSA-2020:2291-01, RHSA-2020:2429-01, RHSA-2020:2519-01, RHSA-2020:2522-01, SSA:2020-163-01, SUSE-SU-2020:1599-1, SUSE-SU-2020:1663-1, SUSE-SU-2020:2027-1, SUSE-SU-2020:2105-1, SUSE-SU-2020:2134-1, SUSE-SU-2020:2152-1, SUSE-SU-2020:2156-1, SUSE-SU-2020:2478-1, SUSE-SU-2020:2487-1, USN-4411-1, USN-4412-1, USN-4413-1, USN-4414-1, USN-4419-1, VIGILANCE-VUL-32240.

Description of the vulnerability 

An attacker can send malicious CIPSO packets to a Linux host, in order to trigger a denial of service.
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This computer threat impacts software or systems such as Debian, Fedora, Junos Space, Linux, openSUSE Leap, RHEL, Slackware, SUSE Linux Enterprise Desktop, SLES, Ubuntu.

Our Vigil@nce team determined that the severity of this computer vulnerability alert is medium.

The trust level is of type confirmed by the editor, with an origin of internet client.

An attacker with a expert ability can exploit this cybersecurity weakness.

Solutions for this threat 

Linux kernel: version 5.6.14.
The version 5.6.14 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.6.14.tar.xz

Linux kernel: version 5.4.42.
The version 5.4.42 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.4.42.tar.xz

Linux kernel: version 4.19.124.
The version 4.19.124 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/linux-4.19.124.tar.xz

Linux kernel: version 4.14.181.
The version 4.14.181 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/linux-4.14.181.tar.xz

Linux kernel: version 4.9.224.
The version 4.9.224 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/linux-4.9.224.tar.xz

Linux kernel: version 4.4.224.
The version 4.4.224 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/linux-4.4.224.tar.xz

Linux kernel: patch for CIPSO.
A patch is indicated in information sources.

Debian 10: new linux packages.
New packages are available:
  Debian 10: linux 4.19.118-2+deb10u1

Debian 8: new linux-4.9 packages.
New packages are available:
  Debian 8: linux-4.9 4.9.210-1+deb9u1~deb8u1

Debian 9: new linux packages.
New packages are available:
  Debian 9: linux 4.9.210-1+deb9u1

Fedora 30-31: new kernel packages.
New packages are available:
  Fedora 30: kernel 5.6.13-100.fc30
  Fedora 31: kernel 5.6.13-200.fc31

Fedora 32: new kernel packages.
New packages are available:
  Fedora 32: kernel 5.6.13-300.fc32

Juniper Junos Space: version 20.3R1.
The version 20.3R1 is fixed:
  https://www.juniper.net/support/downloads/

openSUSE Leap 15.1: new kernel packages.
New packages are available:
  openSUSE Leap 15.1: kernel 4.12.14-lp151.28.52.1

openSUSE Leap 15.2: new kernel packages.
New packages are available:
  openSUSE Leap 15.2: kernel 5.3.18-lp152.20.7.1

openSUSE Leap 15.2: new kernel-rt packages.
New packages are available:
  openSUSE Leap 15.2: kernel-rt 5.3.18-lp152.3.5.1

RHEL 6: new kernel packages.
New packages are available:
  RHEL 6.0-6.10: kernel 2.6.32-754.29.2.el6

RHEL 6: new kernel-rt packages.
New packages are available:
  RHEL 6.0-6.10: kernel-rt 3.10.0-693.67.1.rt56.665.el6rt

RHEL 7.6: new kernel packages.
New packages are available:
  RHEL 7.0-7.8: kernel 3.10.0-957.54.1.el7

RHEL 7.7: new kernel packages.
New packages are available:
  RHEL 7.0-7.8: kernel 3.10.0-1062.26.1.el7

RHEL 7.7: new kpatch-patch packages.
New packages are available:
  RHEL 7.0-7.8: kpatch-patch 3_10_0-1062-1-18.el7

RHEL 7, 8: new kpatch-patch packages (19/05/2020).
New packages are available:
  RHEL 7.0-7.8: kpatch-patch 3_10_0-957_48_1-1-3.el7
  RHEL 8.0-8.1: kpatch-patch 4_18_0-147-1-13.el8

RHEL 7: new kernel-alt packages.
New packages are available:
  RHEL 7.0-7.8: kernel-alt 4.14.0-115.21.2.el7a

RHEL 7: new kernel packages.
New packages are available:
  RHEL 7.0-7.8: kernel 3.10.0-1127.8.2.el7
  RHEL 7.2: kernel 3.10.0-327.88.1.el7
  RHEL 7.3: kernel 3.10.0-514.76.1.el7
  RHEL 7.4: kernel 3.10.0-693.67.1.el7

RHEL 7: new kernel-rt packages.
New packages are available:
  RHEL 7.0-7.8: kernel-rt 3.10.0-1127.8.2.rt56.1103.el7

RHEL 8.0: new kernel packages.
New packages are available:
  RHEL 8.0: kernel 4.18.0-80.23.2.el8_0

RHEL 8.1: new kernel packages.
New packages are available:
  RHEL 8.1: kernel 4.18.0-147.13.2.el8_1

RHEL 8: new kernel packages.
New packages are available:
  RHEL 8.2: kernel 4.18.0-193.1.2.el8_2

RHEL 8: new kernel-rt packages.
New packages are available:
  RHEL 8.2: kernel-rt 4.18.0-193.1.2.rt13.53.el8_2

RHEL 8: new kpatch-patch packages (13/05/2020).
New packages are available:
  RHEL 8.0-8.1: kpatch-patch 4_18_0-193-1-2.el8

Slackware 14.2: new kernel packages.
New packages are available:
  Slackware 14.2: kernel 4.4.227-i586-1

SUSE LE 12 SP2: new kernel packages.
New packages are available:
  SUSE LE 12 SP2: kernel 4.4.121-92.138.1

SUSE LE 12 SP3: new kernel packages.
New packages are available:
  SUSE LE 12 SP3: kernel 4.4.180-94.127.1

SUSE LE 12 SP4: new kernel-rt packages.
New packages are available:
  SUSE LE 12 SP4: kernel-rt 4.12.14-8.23.1

SUSE LE 12 SP5: new kernel-rt packages (03/09/2020).
New packages are available:
  SUSE LE 12 SP5: kernel-rt 4.12.14-10.13.1

SUSE LE 15: new kernel packages.
New packages are available:
  SUSE LE 15 RTM: kernel 4.12.14-150.52.1

SUSE LE 15 SP1: new kernel packages.
New packages are available:
  SUSE LE 15 SP1: kernel 4.12.14-197.45.1

SUSE LE 15 SP1: new kernel-rt packages.
New packages are available:
  SUSE LE 15 SP1: kernel-rt 4.12.14-14.28.1

SUSE LE 15 SP2: new kernel-azure packages.
New packages are available:
  SUSE LE 15 SP2: kernel-azure 5.3.18-18.5.1

SUSE LE 15 SP2: new kernel packages.
New packages are available:
  SUSE LE 15 SP2: kernel 5.3.18-24.9.1

Ubuntu 18.04: new linux-image-5.0.0 packages.
New packages are available:
  Ubuntu 18.04 LTS: linux-image-gke-5.0 5.0.0.1043.28

Ubuntu 20.04: new linux-image-5.4.0 packages.
New packages are available:
  Ubuntu 20.04 LTS: linux-image-generic 5.4.0.28.35

Ubuntu: new linux-image-4.15.0 packages.
New packages are available:
  Ubuntu 16.04 LTS: linux-image-generic-hwe-16.04 4.15.0.107.112
  Ubuntu 18.04 LTS: linux-image-generic 4.15.0.109.97

Ubuntu: new linux-image-4.4.0 packages.
New packages are available:
  Ubuntu 14.04 ESM: linux-image-generic-lts-xenial 4.4.0.185.162
  Ubuntu 16.04 LTS: linux-image-generic 4.4.0.185.191

Ubuntu: new linux-image-5.3.0 packages.
New packages are available:
  Ubuntu 18.04 LTS: linux-image-generic-hwe-18.04 5.3.0.62.115
  Ubuntu 19.10: linux-image-generic 5.3.0.62.52
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