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Vulnerability of Linux kernel: information disclosure via vbg_misc_device_ioctl

Synthesis of the vulnerability 

A local attacker can read a memory fragment via vbg_misc_device_ioctl() of the Linux kernel, in order to obtain sensitive information.
Vulnerable products: Fedora, Linux.
Severity of this weakness: 1/4.
Creation date: 22/06/2018.
Références of this bulletin: CVE-2018-12633, FEDORA-2018-d92fde52d7, VIGILANCE-VUL-26502.

Description of the vulnerability 

A local attacker can read a memory fragment via vbg_misc_device_ioctl() of the Linux kernel, in order to obtain sensitive information.
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This computer weakness impacts software or systems such as Fedora, Linux.

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

Solutions for this threat 

Linux kernel: version 4.17.4.
The version 4.17.4 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

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

Fedora 28: new kernel packages.
New packages are available:
  Fedora 28: kernel 4.17.3-200.fc28
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