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: buffer overflow via i2c_smbus_xfer_emulated

Synthesis of the vulnerability 

An attacker can trigger a buffer overflow via i2c_smbus_xfer_emulated() of the Linux kernel, in order to trigger a denial of service, and possibly to run code.
Impacted software: BIG-IP Hardware, TMOS, Linux, openSUSE Leap, RHEL, SIMATIC, SUSE Linux Enterprise Desktop, SLES.
Severity of this computer vulnerability: 2/4.
Creation date: 05/09/2019.
Références of this announce: CERTFR-2019-AVI-455, CERTFR-2019-AVI-502, CERTFR-2019-AVI-503, CERTFR-2019-AVI-530, CERTFR-2019-AVI-561, CERTFR-2020-AVI-281, CVE-2017-18551, K48073202, openSUSE-SU-2019:2173-1, openSUSE-SU-2019:2181-1, RHSA-2020:2104-01, SSB-439005, SUSE-SU-2019:14218-1, SUSE-SU-2019:2299-1, 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, SUSE-SU-2019:2949-1, SUSE-SU-2019:2950-1, VIGILANCE-VUL-30250.

Description of the vulnerability 

An attacker can trigger a buffer overflow via i2c_smbus_xfer_emulated() 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 cybersecurity threat impacts software or systems such as BIG-IP Hardware, TMOS, Linux, openSUSE Leap, RHEL, SIMATIC, SUSE Linux Enterprise Desktop, SLES.

Our Vigil@nce team determined that the severity of this computer threat note is medium.

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 threat.

Solutions for this threat 

Linux kernel: version 4.14.15.
The version 4.14.15 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/linux-4.14.15.tar.xz

Linux kernel: version 4.9.78.
The version 4.9.78 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/linux-4.9.78.tar.xz

Linux kernel: patch for i2c_smbus_xfer_emulated.
A patch is indicated in information sources.

F5 BIG-IP: solution for Linux CVE-2017-18551.
The solution 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: new kernel-alt packages.
New packages are available:
  RHEL 7.0-7.8: kernel-alt 4.14.0-115.21.2.el7a

SIMATIC S7-1500 CPU 1518: workaround for GNU/Linux Vulnerabilities.
A workaround is indicated in the information source.

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 SP1: new kernel packages (13/11/2019).
New packages are available:
  SUSE LE 12 SP1: kernel 3.12.74-60.64.124.1

SUSE LE 12 SP2: new kernel packages.
New packages are available:
  SUSE LE 12 SP2: kernel 4.4.121-92.120.1

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.
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
Full bulletin, software filtering, emails, fixes, ... (Request your free trial)

Computer vulnerabilities tracking service 

Vigil@nce provides a network vulnerability database. The Vigil@nce security watch publishes vulnerability bulletins about threats impacting the information system.