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Vulnerability of Linux kernel: buffer overflow via cfg80211_mgd_wext_giwessid

Synthesis of the vulnerability 

An attacker can trigger a buffer overflow via cfg80211_mgd_wext_giwessid() of the Linux kernel, in order to trigger a denial of service, and possibly to run code.
Impacted products: Debian, Android OS, Linux, openSUSE Leap, RHEL, Slackware, SUSE Linux Enterprise Desktop, SLES, Ubuntu.
Severity of this bulletin: 2/4.
Creation date: 07/10/2019.
Références of this threat: CERTFR-2019-AVI-561, CERTFR-2019-AVI-575, CERTFR-2019-AVI-602, CERTFR-2019-AVI-635, CERTFR-2020-AVI-005, CERTFR-2020-AVI-029, CERTFR-2020-AVI-051, CERTFR-2020-AVI-071, CERTFR-2020-AVI-095, CERTFR-2020-AVI-114, CERTFR-2020-AVI-123, CERTFR-2020-AVI-125, CERTFR-2020-AVI-147, CVE-2019-17133, DLA-2068-1, DLA-2114-1, openSUSE-SU-2019:2392-1, openSUSE-SU-2019:2444-1, RHSA-2020:0174-01, RHSA-2020:0374-01, RHSA-2020:0375-01, RHSA-2020:0543-01, RHSA-2020:0592-01, RHSA-2020:0609-01, RHSA-2020:0653-01, RHSA-2020:0661-01, RHSA-2020:0664-01, RHSA-2020:0790-01, SSA:2019-311-01, SUSE-SU-2019:14218-1, SUSE-SU-2019:2879-1, SUSE-SU-2019:2946-1, SUSE-SU-2019:2947-1, SUSE-SU-2019:2949-1, SUSE-SU-2019:2951-1, SUSE-SU-2019:2952-1, SUSE-SU-2019:2953-1, SUSE-SU-2019:2984-1, SUSE-SU-2019:3294-1, SUSE-SU-2019:3295-1, SUSE-SU-2020:0093-1, USN-4208-1, USN-4210-1, USN-4211-1, USN-4211-2, USN-4226-1, VIGILANCE-VUL-30537.

Description of the vulnerability 

An attacker can trigger a buffer overflow via cfg80211_mgd_wext_giwessid() of the Linux kernel, in order to trigger a denial of service, and possibly to run code.
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This computer vulnerability bulletin impacts software or systems such as Debian, Android OS, Linux, openSUSE Leap, RHEL, Slackware, SUSE Linux Enterprise Desktop, SLES, Ubuntu.

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

The trust level is of type confirmed by the editor, with an origin of radio connection.

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

Solutions for this threat 

Linux kernel: version 4.9.198.
The version 4.9.198 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 4.4.198.
The version 4.4.198 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: patch for cfg80211_mgd_wext_giwessid.
A patch is indicated in information sources.

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

Debian 8: new linux packages.
New packages are available:
  Debian 8: linux 3.16.81-1

Google Android/Pixel: patch for March 2020.
A patch is indicated in information sources.

openSUSE Leap 15.0: new kernel packages (28/10/2019).
New packages are available:
  openSUSE Leap 15.0: kernel 4.12.14-lp150.12.79.1

openSUSE Leap 15.1: new kernel packages (06/11/2019).
New packages are available:
  openSUSE Leap 15.1: kernel 4.12.14-lp151.28.25.1

RHEL 6 MRG: new kernel-rt packages.
New packages are available:
  RHEL 6.0-6.10: kernel-rt 3.10.0-693.64.1.rt56.662.el6rt

RHEL 6: new kernel packages.
New packages are available:
  RHEL 6.0-6.10: kernel 2.6.32-754.28.1.el6

RHEL 7.2: new kernel packages.
New packages are available:
  RHEL 7.2: kernel 3.10.0-327.85.1.el7

RHEL 7.3: new kernel packages.
New packages are available:
  RHEL 7.3: kernel 3.10.0-514.73.1.el7

RHEL 7.4: new kernel packages.
New packages are available:
  RHEL 7.0-7.7: kernel 3.10.0-693.64.1.el7

RHEL 7.5: new kernel packages.
New packages are available:
  RHEL 7.0-7.7: kernel 3.10.0-862.48.1.el7

RHEL 7.6: new kernel packages.
New packages are available:
  RHEL 7.0-7.7: kernel 3.10.0-957.46.1.el7

RHEL 7: new kernel-alt packages.
New packages are available:
  RHEL 7.0-7.7: kernel-alt 4.14.0-115.17.1.el7a

RHEL 7: new kernel packages.
New packages are available:
  RHEL 7.0-7.7: kernel 3.10.0-1062.12.1.el7

RHEL 7: new kernel-rt packages.
New packages are available:
  RHEL 7.0-7.7: kernel-rt 3.10.0-1062.12.1.rt56.1042.el7

Slackware 14.2: new kernel packages.
New packages are available:
  Slackware 14.2: kernel 4.4.199-*-1

SUSE LE 11 SP4: new kernel packages.
New packages are available:
  SUSE LE 11 SP4: kernel 3.0.101-108.108.1

SUSE LE 12 SP2: new kernel packages.
New packages are available:
  SUSE LE 12 SP2: kernel 4.4.121-92.125.1

SUSE LE 12 SP3: new kernel packages (13/11/2019).
New packages are available:
  SUSE LE 12 SP3: kernel 4.4.180-94.107.1

SUSE LE 12 SP4: new kernel-azure packages (13/11/2019).
New packages are available:
  SUSE LE 12 SP4: kernel-azure 4.12.14-6.29.1

SUSE LE 12 SP4: new kernel packages (04/11/2019).
New packages are available:
  SUSE LE 12 SP4: kernel 4.12.14-95.37.1

SUSE LE 12 SP4: new kernel-rt packages.
New packages are available:
  SUSE LE 12 SP4: kernel-rt 4.12.14-8.9.3

SUSE LE 12 SP5: new kernel-azure packages (15/01/2020).
New packages are available:
  SUSE LE 12 SP5: kernel-azure 4.12.14-16.7.1

SUSE LE 15 RTM: new kernel-azure packages (13/11/2019).
New packages are available:
  SUSE LE 15 RTM: kernel-azure 4.12.14-5.44.1

SUSE LE 15 RTM: new kernel packages (13/11/2019).
New packages are available:
  SUSE LE 15 RTM: kernel 4.12.14-150.41.1

SUSE LE 15 SP1: new kernel-azure packages (13/11/2019).
New packages are available:
  SUSE LE 15 SP1: kernel-azure 4.12.14-8.19.1

SUSE LE 15 SP1: new kernel packages (13/11/2019).
New packages are available:
  SUSE LE 15 SP1: kernel 4.12.14-197.26.1

SUSE LE 15 SP1: new kernel-rt packages.
New packages are available:
  SUSE LE 15 SP1: kernel-rt 4.12.14-14.14.3

Ubuntu: new linux-image-4.15.0 packages (03/12/2019).
New packages are available:
  Ubuntu 16.04 LTS: linux-image-generic-hwe-16.04 4.15.0.72.92
  Ubuntu 18.04 LTS: linux-image-generic 4.15.0.72.74

Ubuntu: new linux-image-4.4.0 packages.
New packages are available:
  Ubuntu 14.04 ESM: linux-image-generic-lts-xenial 4.4.0.170.149
  Ubuntu 16.04 LTS: linux-image-generic 4.4.0.170.178

Ubuntu: new linux-image-5.0.0 packages (07/01/2020).
New packages are available:
  Ubuntu 18.04 LTS: linux-image-azure 5.0.0.1028.39
  Ubuntu 19.04: linux-image-generic 5.0.0.38.40

Ubuntu: new linux-image-5.3.0 packages.
New packages are available:
  Ubuntu 18.04 LTS: linux-image-gcp-edge 5.3.0.1009.9
  Ubuntu 19.10: linux-image-generic 5.3.0.24.28

Wind River Linux: version 10.18.44.13.
The version 10.18.44.13 is fixed:
  https://support2.windriver.com/
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