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Vulnerability of Linux kernel: information disclosure via Speculatively Out-of-bounds Loads

Synthesis of the vulnerability 

An attacker can bypass access restrictions to data via Speculatively Out-of-bounds Loads of the Linux kernel, in order to obtain sensitive information.
Vulnerable software: Fedora, Linux.
Severity of this announce: 1/4.
Creation date: 19/04/2021.
Références of this computer vulnerability: CVE-2021-29155, FEDORA-2021-8cd093f639, FEDORA-2021-a963f04012, FEDORA-2021-e6b4847979, VIGILANCE-VUL-35107.

Description of the vulnerability 

An attacker can bypass access restrictions to data via Speculatively Out-of-bounds Loads of the Linux kernel, in order to obtain sensitive information.
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This cybersecurity announce impacts software or systems such as Fedora, Linux.

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

Solutions for this threat 

Linux kernel: version 5.11.17.
The version 5.11.17 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.11.17.tar.xz

Linux kernel: version 5.10.33.
The version 5.10.33 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.10.33.tar.xz

Linux kernel: version 5.4.116.
The version 5.4.116 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.4.116.tar.xz

Linux kernel: version 4.19.189.
The version 4.19.189 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/linux-4.19.189.tar.xz

Linux kernel: patch for Speculatively Out-of-bounds Loads.
A patch is indicated in information sources.

Fedora 32: new kernel packages.
New packages are available:
  Fedora 32: kernel 5.11.16-100.fc32, kernel-tools 5.11.16-100.fc32

Fedora 33: new kernel packages.
New packages are available:
  Fedora 33: kernel 5.11.16-200.fc33, kernel-tools 5.11.16-200.fc33

Fedora 34: new kernel packages.
New packages are available:
  Fedora 34: kernel 5.11.16-300.fc34, kernel-tools 5.11.16-300.fc34
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Computer vulnerabilities tracking service 

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