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cybersecurity alert CVE-2019-3900

Linux kernel: denial of service via vhost_net

Synthesis of the vulnerability

An attacker can send malicious vhost_net packets to Linux kernel, in order to trigger a denial of service.
Severity of this threat: 1/4.
Creation date: 26/04/2019.
Références of this weakness: 1103505, CERTFR-2019-AVI-361, CERTFR-2019-AVI-392, CERTFR-2019-AVI-419, CERTFR-2019-AVI-441, CVE-2019-3900, DLA-1884-1, DLA-1885-1, DSA-4497-1, FEDORA-2019-4c91a2f76e, FEDORA-2019-640f8d8dd1, FEDORA-2019-8219efa9f6, FEDORA-2019-87d807d7cb, FEDORA-2019-97380355ae, RHSA-2019:1973-01, RHSA-2019:2029-01, RHSA-2019:2043-01, RHSA-2019:3220-01, RHSA-2019:3309-01, RHSA-2019:3517-01, SSA:2019-311-01, USN-4114-1, USN-4115-1, USN-4115-2, USN-4116-1, USN-4117-1, USN-4118-1, VIGILANCE-VUL-29144.
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Description of the vulnerability

An attacker can send malicious vhost_net packets to Linux kernel, in order to trigger a denial of service.
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This weakness impacts software or systems such as Debian, Fedora, QRadar SIEM, Linux, RHEL, Slackware, Ubuntu.

Our Vigil@nce team determined that the severity of this vulnerability announce is low.

The trust level is of type confirmed by the editor, with an origin of internet client.

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

Solutions for this threat

Linux kernel: version 4.9.190.
The version 4.9.190 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 4.14.133.
The version 4.14.133 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 4.4.191.
The version 4.4.191 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 3.16.72.
The version 3.16.72 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v3.x/

Linux kernel: patch for vhost_net.
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+deb9u5~deb8u1

Debian 8: new linux packages.
New packages are available:
  Debian 8: linux 3.16.72-1

Debian 9/10: new linux packages.
New packages are available:
  Debian 9: linux 4.9.168-1+deb9u5
  Debian 10: linux 4.19.37-5+deb10u2

Fedora 30: new kernel packages.
New packages are available:
  Fedora 30: kernel 5.0.16-300.fc30

Fedora: new kernel packages (03/05/2019).
New packages are available:
  Fedora 30: kernel 5.0.10-300.fc30
  Fedora 29: kernel 5.0.10-200.fc29

Fedora: new kernel packages (04/09/2019).
New packages are available:
  Fedora 29: kernel 5.2.11-100.fc29
  Fedora 30: kernel 5.2.11-200.fc30

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

RHEL 7.6: new kernel packages.
New packages are available:
  RHEL 7: kernel 3.10.0-957.38.1.el7

RHEL 7: new kernel-alt packages.
New packages are available:
  RHEL 7: kernel 4.14.0-115.10.1.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

RHEL 8: new kernel packages.
New packages are available:
  RHEL 8: kernel 4.18.0-147.el8

RHEL 8: new kernel-rt packages.
New packages are available:
  RHEL 8: kernel-rt 4.18.0-147.rt24.93.el8

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

Ubuntu 16.04: new linux-image-4.4.0 packages.
New packages are available:
  Ubuntu 16.04 LTS: linux-image-generic 4.4.0.161.169

Ubuntu 16/18: new linux-image-aws packages.
New packages are available:
  Ubuntu 16.04 LTS: linux-image-aws 4.15.0.1047.47
  Ubuntu 18.04 LTS: linux-image-aws 4.15.0.1047.46

Ubuntu 19.04: new linux-image-aws packages.
New packages are available:
  Ubuntu 19.04: linux-image-aws 5.0.0.1014.15

Ubuntu: new linux-image-4.15.0 packages.
New packages are available:
  Ubuntu 16.04 LTS: linux-image-generic-hwe-16.04 4.15.0.62.82
  Ubuntu 18.04 LTS: linux-image-generic 4.15.0.62.64

Ubuntu: new linux-image-5.0.0 packages.
New packages are available:
  Ubuntu 18.04 LTS: linux-image-generic-hwe-18.04 5.0.0.27.84
  Ubuntu 19.04: linux-image-generic 5.0.0.27.28

Wind River Linux: solution (21/05/2019).
The solution is indicated in information sources.
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