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Vulnerability of Linux kernel: information disclosure via AF_VSOCK

Synthesis of the vulnerability 

A local attacker can read a memory fragment via AF_VSOCK of the Linux kernel, in order to obtain sensitive information.
Vulnerable systems: Debian, Fedora, QRadar SIEM, Linux, openSUSE Leap, RHEL, SUSE Linux Enterprise Desktop, SLES, Ubuntu.
Severity of this threat: 1/4.
Creation date: 11/09/2018.
Références of this weakness: 1103505, 1619846, CERTFR-2019-AVI-035, CERTFR-2019-AVI-038, CERTFR-2019-AVI-041, CERTFR-2019-AVI-042, CERTFR-2019-AVI-044, CERTFR-2019-AVI-621, CVE-2018-14625, DLA-1771-1, FEDORA-2018-2645eb8dab, FEDORA-2018-6e8c330d50, openSUSE-SU-2019:0065-1, RHSA-2019:2029-01, RHSA-2019:2043-01, RHSA-2019:4154-01, SUSE-SU-2019:0196-1, SUSE-SU-2019:0222-1, SUSE-SU-2019:0224-1, USN-3871-1, USN-3871-2, USN-3871-3, USN-3871-4, USN-3871-5, USN-3872-1, USN-3878-1, USN-3878-2, VIGILANCE-VUL-27200.

Description of the vulnerability 

A local attacker can read a memory fragment via AF_VSOCK of the Linux kernel, in order to obtain sensitive information.
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This computer vulnerability impacts software or systems such as Debian, Fedora, QRadar SIEM, Linux, openSUSE Leap, RHEL, SUSE Linux Enterprise Desktop, SLES, Ubuntu.

Our Vigil@nce team determined that the severity of this 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 weakness.

Solutions for this threat 

Linux kernel: version 4.19.9.
The version 4.19.9 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 4.14.88.
The version 4.14.88 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 4.9.145.
The version 4.9.145 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

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

Debian 8: new linux-4.9 packages.
New packages are available:
  Debian 8: linux-4.9 4.9.168-1~deb8u1

Fedora 28: new kernel-headers packages.
New packages are available:
  Fedora 28: kernel-headers 4.19.10-200.fc28

Fedora 28: new kernel-tools packages.
New packages are available:
  Fedora 28: kernel-tools 4.19.10-200.fc28

Fedora 29: new kernel-headers packages.
New packages are available:
  Fedora 29: kernel-headers 4.19.9-300.fc29

Fedora 29: new kernel packages.
New packages are available:
  Fedora 29: kernel 4.19.9-300.fc29

IBM QRadar SIEM: patch for Kernel.
A patch is indicated in information sources.

openSUSE Leap 15.0: new kernel packages.
New packages are available:
  openSUSE Leap 15.0: kernel 4.12.14-lp150.12.45.1

RHEL 7: new kernel-alt packages.
New packages are available:
  RHEL 7.0-7.7: kernel-alt 4.14.0-115.16.1.el7a

RHEL 7: new kernel packages.
New packages are available:
  RHEL 7: kernel 3.10.0-1062.el7

RHEL 7: new kernel-rt packages.
New packages are available:
  RHEL 7: kernel-rt 3.10.0-1062.rt56.1022.el7

SUSE LE 12 SP4: new kernel packages (04/02/2019).
New packages are available:
  SUSE LE 12 SP4: kernel 4.12.14-6.6.2

SUSE LE 12 SP4: new kernel packages (30/01/2019).
New packages are available:
  SUSE LE 12 SP4: kernel 4.12.14-95.6.1

SUSE LE 15: new kernel packages.
New packages are available:
  SUSE LE 15 RTM: kernel 4.12.14-25.28.1

Ubuntu 18.04: new linux-image-4.15.0 packages.
New packages are available:
  Ubuntu 16.04 LTS: linux-image-generic-hwe-16.04 4.15.0.45.66
  Ubuntu 18.04 LTS: linux-image-generic 4.15.0-45.48

Ubuntu 18.04: new linux-image-4.18.0 packages.
New packages are available:
  Ubuntu 18.04 LTS: linux-image-generic-hwe-18.04 4.18.0-14.15~18.04.1

Ubuntu 18.10: new linux-image-4.18.0 packages.
New packages are available:
  Ubuntu 18.10: linux-image-generic 4.18.0.14.15
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