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Vulnerability of Linux kernel: code execution via BPF Branch Displacements

Synthesis of the vulnerability 

An attacker can use a vulnerability via BPF Branch Displacements of the Linux kernel, in order to run code.
Vulnerable software: Fedora, Linux, openSUSE Leap, SUSE Linux Enterprise Desktop, SLES, Ubuntu.
Severity of this announce: 2/4.
Creation date: 08/04/2021.
Références of this computer vulnerability: CERTFR-2021-AVI-265, CERTFR-2021-AVI-277, CERTFR-2021-AVI-278, CERTFR-2021-AVI-284, CERTFR-2021-AVI-302, CERTFR-2021-AVI-387, CERTFR-2021-AVI-392, CERTFR-2021-AVI-469, CVE-2021-29154, FEDORA-2021-57a7ba61f8, FEDORA-2021-e71c033f88, openSUSE-SU-2021:0579-1, openSUSE-SU-2021:0758-1, SUSE-SU-2021:1210-1, SUSE-SU-2021:1211-1, SUSE-SU-2021:1238-1, SUSE-SU-2021:1248-1, SUSE-SU-2021:1266-1, SUSE-SU-2021:1301-1, SUSE-SU-2021:1573-1, SUSE-SU-2021:1596-1, SUSE-SU-2021:1617-1, SUSE-SU-2021:1623-1, SUSE-SU-2021:1624-1, SUSE-SU-2021:1975-1, SUSE-SU-2021:1977-1, USN-4912-1, USN-4916-1, USN-4916-2, USN-4917-1, VIGILANCE-VUL-35035.

Description of the vulnerability 

An attacker can use a vulnerability via BPF Branch Displacements of the Linux kernel, in order to run code.
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This weakness bulletin impacts software or systems such as Fedora, Linux, openSUSE Leap, SUSE Linux Enterprise Desktop, SLES, Ubuntu.

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

Solutions for this threat 

Linux kernel: version 5.11.13.
The version 5.11.13 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v5.x/

Linux kernel: version 5.10.29.
The version 5.10.29 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v5.x/

Linux kernel: version 5.4.111.
The version 5.4.111 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v5.x/

Linux kernel: version 4.19.186.
The version 4.19.186 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 4.14.230.
The version 4.14.230 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 4.9.266.
The version 4.9.266 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 4.4.266.
The version 4.4.266 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: patch for BPF Branch Displacements.
A patch is indicated in information sources.

Fedora 32-33: new kernel packages.
New packages are available:
  Fedora 32: kernel 5.11.13-100.fc32
  Fedora 33: kernel 5.11.13-200.fc33

openSUSE Leap 15.2: new kernel packages.
New packages are available:
  openSUSE Leap 15.2: kernel 5.3.18-lp152.72.1

openSUSE Leap 15.2: new kernel-rt packages.
New packages are available:
  openSUSE Leap 15.2: kernel-rt 5.3.18-lp152.3.8.1

SUSE LE 12 SP2: new kernel packages.
New packages are available:
  SUSE LE 12 SP2: kernel 4.4.121-92.155.1

SUSE LE 12 SP3: new kernel packages.
New packages are available:
  SUSE LE 12 SP3: kernel 4.4.180-94.144.1

SUSE LE 12 SP4: new kernel packages.
New packages are available:
  SUSE LE 12 SP4: kernel 4.12.14-95.74.1

SUSE LE 12 SP5: new kernel-azure packages.
New packages are available:
  SUSE LE 12 SP5: kernel-azure 4.12.14-16.53.1

SUSE LE 12 SP5: new kernel packages (16/04/2021).
New packages are available:
  SUSE LE 12 SP5: kernel 4.12.14-122.66.2

SUSE LE 12 SP5: new kernel-rt packages.
New packages are available:
  SUSE LE 12 SP5: kernel-rt 4.12.14-10.40.1

SUSE LE 15 RTM: new kernel packages.
New packages are available:
  SUSE LE 15 RTM: kernel 4.12.14-150.72.1

SUSE LE 15 SP1: new kernel packages (18/05/2021).
New packages are available:
  SUSE LE 15 SP1: kernel 4.12.14-197.89.2

SUSE LE 15 SP2: new kernel-azure packages.
New packages are available:
  SUSE LE 15 SP2: kernel-azure 5.3.18-18.44.1

SUSE LE 15 SP2: new kernel packages.
New packages are available:
  SUSE LE 15 SP2: kernel 5.3.18-24.61.1

SUSE LE 15 SP2: new kernel-rt packages.
New packages are available:
  SUSE LE 15 SP2: kernel-rt 5.3.18-33.1

SUSE LE 15 SP3: new kernel-azure packages.
New packages are available:
  SUSE LE 15 SP3: kernel-azure 5.3.18-38.3.1

SUSE LE 15 SP3: new kernel packages.
New packages are available:
  SUSE LE 15 SP3: kernel 5.3.18-59.5.2

Ubuntu 20.04: new linux-image-oem-20.04 packages.
New packages are available:
  Ubuntu 20.04 LTS: linux-image-oem-20.04 5.6.0.1053.49

Ubuntu: new linux-image-5.4.0/5.8.0 packages.
New packages are available:
  Ubuntu 18.04 LTS: linux-image-generic-hwe-18.04 5.4.0.72.80~18.04.65
  Ubuntu 20.04 LTS: linux-image-generic 5.4.0.72.75
  Ubuntu 20.10: linux-image-generic 5.8.0.50.55

Ubuntu: new linux-image packages.
New packages are available:
  Ubuntu 14.04 ESM: linux-image-generic-lts-xenial 4.4.0.210.183
  Ubuntu 16.04 LTS: linux-image-generic 4.4.0.210.216
  Ubuntu 18.04 LTS: linux-image-generic 4.15.0.142.129, linux-image-5.3.0-74-generic 5.3.0-74.70
  Ubuntu 20.04 LTS: linux-image-oem-20.04 5.6.0.1055.51
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