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Vulnerability of Linux kernel: denial of service via tcp_disconnect

Synthesis of the vulnerability 

An attacker can generate a fatal error via tcp_disconnect() of the Linux kernel, in order to trigger a denial of service.
Impacted products: Debian, Junos Space, Linux, openSUSE Leap, RHEL, SUSE Linux Enterprise Desktop, SLES, Ubuntu.
Severity of this bulletin: 1/4.
Creation date: 04/09/2017.
Références of this threat: CERTFR-2017-AVI-339, CERTFR-2017-AVI-375, CERTFR-2017-AVI-379, CERTFR-2017-AVI-383, CERTFR-2017-AVI-390, CERTFR-2017-AVI-400, CERTFR-2018-AVI-005, CERTFR-2018-AVI-014, CERTFR-2018-AVI-048, CVE-2017-14106, DLA-1099-1, DSA-3981-1, JSA10838, openSUSE-SU-2017:2494-1, openSUSE-SU-2017:2495-1, RHSA-2017:2918-01, RHSA-2017:2930-01, RHSA-2017:2931-01, RHSA-2017:3200-01, RHSA-2018:2172-01, SUSE-SU-2017:2847-1, SUSE-SU-2017:2869-1, SUSE-SU-2017:2908-1, SUSE-SU-2017:2920-1, SUSE-SU-2017:2956-1, SUSE-SU-2018:0011-1, SUSE-SU-2018:0040-1, SUSE-SU-2018:0131-1, SUSE-SU-2018:0171-1, USN-3443-1, USN-3443-2, USN-3443-3, USN-3444-1, USN-3444-2, USN-3445-1, USN-3445-2, VIGILANCE-VUL-23715.

Description of the vulnerability 

An attacker can generate a fatal error via tcp_disconnect() of the Linux kernel, in order to trigger a denial of service.
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This security vulnerability impacts software or systems such as Debian, Junos Space, Linux, openSUSE Leap, RHEL, SUSE Linux Enterprise Desktop, SLES, Ubuntu.

Our Vigil@nce team determined that the severity of this computer weakness bulletin is low.

The trust level is of type confirmed by the editor, with an origin of user shell.

An attacker with a expert ability can exploit this security note.

Solutions for this threat 

Linux kernel: version 4.9.51.
The version 4.9.51 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 4.4.89.
The version 4.4.89 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 4.1.45.
The version 4.1.45 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 3.18.72.
The version 3.18.72 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v3.x/

Linux kernel: version 3.16.48.
The version 3.16.48 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v3.x/

Linux kernel: version 3.10.108.
The version 3.10.108 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v3.x/

Linux kernel: version 3.2.93.
The version 3.2.93 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v3.x/

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

Debian 7: new linux packages.
New packages are available:
  Debian 7: linux 3.2.93-1

Debian 8/9: new linux packages.
New packages are available:
  Debian 8: linux 3.16.43-2+deb8u5
  Debian 9: linux 4.9.30-2+deb9u5

Junos Space: fixed versions.
Fixed versions are indicated in information sources.

openSUSE Leap 42.2: new kernel packages.
New packages are available:
  openSUSE Leap 42.2: kernel 4.4.87-18.29.1

openSUSE Leap 42.3: new kernel packages.
New packages are available:
  openSUSE Leap 42.3: kernel 4.4.87-25.1

RHEL 5: new kernel packages.
New packages are available:
  RHEL 5: kernel 2.6.18-433.el5

RHEL 6: new kernel packages.
New packages are available:
  RHEL 6: kernel 2.6.32-696.16.1.el6

RHEL 6: new kernel-rt packages.
New packages are available:
  RHEL 6: kernel-rt 3.10.0-693.5.2.rt56.592.el6rt

RHEL 7: new kernel packages.
New packages are available:
  RHEL 7: kernel 3.10.0-693.5.2.el7

RHEL 7: new kernel-rt packages.
New packages are available:
  RHEL 7: kernel-rt 3.10.0-693.5.2.rt56.626.el7

SUSE LE 11 SP3: new kernel packages (09/01/2018).
New packages are available:
  SUSE LE 11 SP3: kernel 3.0.101-0.47.106.11.1

SUSE LE 11 SP4: new kernel packages (04/01/2018).
New packages are available:
  SUSE LE 11 SP4: kernel 3.0.101-108.21.1

SUSE LE 12 RTM: new kernel packages.
New packages are available:
  SUSE LE 12 RTM: kernel 3.12.61-52.101.1

SUSE LE 12 SP1: new kernel packages.
New packages are available:
  SUSE LE 12 SP1: kernel 3.12.74-60.64.63.1

SUSE LE 12 SP2: new kernel packages.
New packages are available:
  SUSE LE 12 SP2: kernel 4.4.90-92.45.1

SUSE LE 12 SP2: new kernel-rt packages (09/11/2017).
New packages are available:
  SUSE LE 12 SP2: kernel-rt 4.4.88-18.1

SUSE LE 12 SP3: new kernel packages.
New packages are available:
  SUSE LE 12 SP3: kernel 4.4.92-6.18.1

Ubuntu: new linux-image-3.2.0 packages.
New packages are available:
  Ubuntu 12.04 ESM: linux-image-generic 3.2.0.131.145
  Ubuntu 14.04 LTS: linux-image-generic 3.13.0.133.142

Ubuntu: new linux-image-4.10.0 packages.
New packages are available:
  Ubuntu 17.04: linux-image-generic 4.10.0.37.37

Ubuntu: new linux-image-4.4.0 packages.
New packages are available:
  Ubuntu 14.04 LTS: linux-image-generic 4.4.0.97.81
  Ubuntu 16.04 LTS: linux-image-generic 4.4.0.97.102

Wind River Linux: solution of End-October 2017.
The solution is indicated in information sources.
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