The Vigil@nce team watches public vulnerabilities impacting your computers, and then offers security solutions, a vigilance database and tools to fix them.

Vulnerability of Linux kernel: use after free via hci_uart_register_dev

Synthesis of the vulnerability 

An attacker can force the usage of a freed memory area via hci_uart_register_dev() 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.
Severity of this bulletin: 1/4.
Creation date: 25/09/2019.
Références of this threat: CERTFR-2019-AVI-455, CERTFR-2019-AVI-502, CERTFR-2019-AVI-503, CERTFR-2019-AVI-530, CERTFR-2020-AVI-123, CERTFR-2020-AVI-415, CERTFR-2020-AVI-612, CERTFR-2020-AVI-710, CERTFR-2021-AVI-005, CVE-2019-15917, DLA-1930-1, DLA-2114-1, openSUSE-SU-2019:2173-1, openSUSE-SU-2019:2181-1, RHSA-2020:2854-01, RHSA-2020:4060-01, RHSA-2020:4062-01, RHSA-2020:4431-01, RHSA-2020:4609-01, RHSA-2021:0019-01, SSA:2020-008-01, SUSE-SU-2019:2412-1, SUSE-SU-2019:2424-1, SUSE-SU-2019:2648-1, SUSE-SU-2019:2651-1, SUSE-SU-2019:2658-1, SUSE-SU-2019:2738-1, VIGILANCE-VUL-30405.

Description of the vulnerability 

An attacker can force the usage of a freed memory area via hci_uart_register_dev() of the Linux kernel, in order to trigger a denial of service, and possibly to run code.
Full bulletin, software filtering, emails, fixes, ... (Request your free trial)

This computer vulnerability bulletin impacts software or systems such as Debian, Android OS, Linux, openSUSE Leap, RHEL, Slackware, SUSE Linux Enterprise Desktop, SLES.

Our Vigil@nce team determined that the severity of this vulnerability 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 threat note.

Solutions for this threat 

Linux kernel: version 5.0.5.
The version 5.0.5 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.0.5.tar.xz

Linux kernel: version 4.19.32.
The version 4.19.32 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 4.14.109.
The version 4.14.109 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 4.9.202.
The version 4.9.202 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 4.4.203.
The version 4.4.203 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

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 3.16.74-1

Google Android/Pixel: patch for November 2019.
A patch is indicated in information sources.

openSUSE Leap 15: new kernel packages.
New packages are available:
  openSUSE Leap 15.0: kernel 4.12.14-lp150.12.73.1
  openSUSE Leap 15.1: kernel 4.12.14-lp151.28.16.1

RHEL 7.7: new kernel packages.
New packages are available:
  RHEL 7.0-7.9: kernel 3.10.0-1062.43.1.el7

RHEL 7.8: new kernel packages.
New packages are available:
  RHEL 7.0-7.8: kernel 3.10.0-1160.el7

RHEL 7.8: new kernel-rt packages.
New packages are available:
  RHEL 7.0-7.8: kernel-rt 3.10.0-1160.rt56.1131.el7

RHEL 7: new kernel-alt packages.
New packages are available:
  RHEL 7.0-7.8: kernel-alt 4.14.0-115.26.1.el7a

RHEL 8: new kernel packages (04/11/2020).
New packages are available:
  RHEL 8.0-8.2: kernel 4.18.0-240.el8

RHEL 8: new kernel-rt packages (04/11/2020).
New packages are available:
  RHEL 8.0-8.2: kernel-rt 4.18.0-240.rt7.54.el8

Slackware 14.2: new kernel packages (09/01/2020).
New packages are available:
  Slackware 14.2: kernel 4.4.208-*-1

SUSE LE 12 SP4: new kernel-azure packages.
New packages are available:
  SUSE LE 12 SP4: kernel-azure 4.12.14-6.26.1

SUSE LE 12 SP4: new kernel-default packages.
New packages are available:
  SUSE LE 12 SP4: kernel-default 4.12.14-95.32.1

SUSE LE 15: new kernel-azure packages.
New packages are available:
  SUSE LE 15 RTM: kernel-azure 4.12.14-5.41.1
  SUSE LE 15 SP1: kernel-azure 4.12.14-8.16.1

SUSE LE 15 SP1: new kernel-default packages.
New packages are available:
  SUSE LE 15 SP1: kernel-default 4.12.14-197.18.1

SUSE LE 15 SP1: new kernel-rt packages.
New packages are available:
  SUSE LE 15 SP1: kernel-rt 4.12.14-14.11.1

Wind River Linux: version 10.18.44.11.
The version 10.18.44.11 is fixed:
  https://support2.windriver.com/
Full bulletin, software filtering, emails, fixes, ... (Request your free trial)

Computer vulnerabilities tracking service 

Vigil@nce provides a cybersecurity workaround. Each administrator can customize the list of products for which he wants to receive vulnerability alerts.