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Vulnerability of Linux kernel: buffer overflow via eBPF

Synthesis of the vulnerability 

An attacker can trigger a buffer overflow via eBPF of the Linux kernel, in order to trigger a denial of service, and possibly to run code.
Vulnerable products: Fedora, Linux, SLES, Ubuntu.
Severity of this weakness: 1/4.
Creation date: 12/05/2021.
Références of this bulletin: CERTFR-2021-AVI-372, CVE-2021-3489, FEDORA-2021-05152dbcf5, FEDORA-2021-0722515c0a, FEDORA-2021-286375de1e, SUSE-SU-2021:1975-1, SUSE-SU-2021:1977-1, USN-4948-1, USN-4949-1, USN-4950-1, VIGILANCE-VUL-35394, ZDI-21-590.

Description of the vulnerability 

An attacker can trigger a buffer overflow via eBPF of the Linux kernel, in order to trigger a denial of service, and possibly to run code.
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This security alert impacts software or systems such as Fedora, Linux, SLES, Ubuntu.

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

Solutions for this threat 

Linux kernel: version 5.12.4.
The version 5.12.4 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v5.x/

Fedora 32: new kernel packages.
New packages are available:
  Fedora 32: kernel 5.11.22-100.fc32

Linux kernel: version 5.11.21.
The version 5.11.21 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v5.x/

Linux kernel: version 5.10.37.
The version 5.10.37 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v5.x/

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

Fedora 33-34: new kernel-headers packages.
New packages are available:
  Fedora 33: kernel-headers 5.11.20-200.fc33
  Fedora 34: kernel-headers 5.11.20-300.fc34

Fedora 33-34: new kernel packages.
New packages are available:
  Fedora 33: kernel 5.11.20-200.fc33
  Fedora 34: kernel 5.11.20-300.fc34

Fedora 33-34: new kernel-tools packages.
New packages are available:
  Fedora 33: kernel-tools 5.11.20-200.fc33
  Fedora 34: kernel-tools 5.11.20-300.fc34

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: new linux-image-5.10.0 packages.
New packages are available:
  Ubuntu 20.04 LTS: linux-image-5.10.0-1026-oem 5.10.0-1026.27, linux-image-oem-20.04b 5.10.0.1026.27

Ubuntu: new linux-image-5.11.0 packages.
New packages are available, as indicated in information sources.

Ubuntu: new linux-image-5.8.0 packages.
New packages are available, as indicated in information sources.
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