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

weakness bulletin CVE-2019-12456

Linux kernel: use after free via _ctl_ioctl_main

Synthesis of the vulnerability

An attacker can force the usage of a freed memory area via _ctl_ioctl_main() of the Linux kernel, in order to trigger a denial of service, and possibly to run code.
Severity of this threat: 2/4.
Creation date: 03/06/2019.
Références of this weakness: CERTFR-2019-AVI-330, CERTFR-2019-AVI-337, CERTFR-2019-AVI-346, CERTFR-2019-AVI-458, CVE-2019-12456, FEDORA-2019-83858fc57b, FEDORA-2019-c03eda3cc6, openSUSE-SU-2019:1570-1, openSUSE-SU-2019:1571-1, openSUSE-SU-2019:1579-1, SUSE-SU-2019:1823-1, SUSE-SU-2019:1823-2, SUSE-SU-2019:1851-1, SUSE-SU-2019:1852-1, SUSE-SU-2019:1855-1, SUSE-SU-2019:1870-1, SUSE-SU-2019:2430-1, SUSE-SU-2019:2450-1, VIGILANCE-VUL-29450.
Full Vigil@nce bulletin... (Free trial)

Description of the vulnerability

An attacker can force the usage of a freed memory area via _ctl_ioctl_main() of the Linux kernel, in order to trigger a denial of service, and possibly to run code.
Full Vigil@nce bulletin... (Free trial)

This computer weakness impacts software or systems such as Fedora, Linux, openSUSE Leap, SUSE Linux Enterprise Desktop, SLES.

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

Solutions for this threat

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

Fedora: new kernel-headers packages.
New packages are available:
  Fedora 29: kernel-headers 5.1.8-200.fc29
  Fedora 30: kernel-headers 5.1.8-300.fc30

Fedora: new kernel packages.
New packages are available:
  Fedora 29: kernel 5.1.8-200.fc29
  Fedora 30: kernel 5.1.8-300.fc30

openSUSE Leap 15.0: new kernel packages.
New packages are available:
  openSUSE Leap 15.0: kernel 4.12.14-lp150.12.64.1

openSUSE Leap 15.1: new kernel packages.
New packages are available:
  openSUSE Leap 15.1: kernel 4.12.14-lp151.28.7.1

openSUSE Leap 42.3: new kernel packages.
New packages are available:
  openSUSE Leap 42.3: kernel 4.4.180-102.1

SUSE LE 12 SP1: new kernel packages.
New packages are available:
  SUSE LE 12 SP1: kernel 3.12.74-60.64.118.1

SUSE LE 12 SP2: new kernel packages.
New packages are available:
  SUSE LE 12 SP2: kernel 4.4.121-92.117.1

SUSE LE 12 SP3: new kernel packages.
New packages are available:
  SUSE LE 12 SP3: kernel 4.4.180-94.100.1

SUSE LE 12 SP4: new kernel packages (16/07/2019).
New packages are available:
  SUSE LE 12 SP4: kernel 4.12.14-95.24.1

SUSE LE 12 SP4: new kernel-rt packages.
New packages are available:
  SUSE LE 12 SP4: kernel-rt 4.12.14-8.3.1

SUSE LE 15 RTM: new kernel packages.
New packages are available:
  SUSE LE 15 RTM: kernel 4.12.14-150.27.1

SUSE LE 15 SP1: new kernel-source-rt packages.
New packages are available:
  SUSE LE 15 SP1: kernel-source-rt 4.12.14-14.8.1
Full Vigil@nce bulletin... (Free trial)

Computer vulnerabilities tracking service

Vigil@nce provides computer vulnerability announces. The Vigil@nce security watch publishes vulnerability bulletins about threats impacting the information system. The Vigil@nce team tracks computer vulnerabilities impacting systems and applications. The technology watch team tracks security threats targeting the computer system.