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Ubuntu 16.04 ESM / 18.04 LTS / 20.04 LTS : Linux kernel vulnerability (USN-5086-1)

info Nessus Plugin ID 153569

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Synopsis

The remote Ubuntu host is missing a security update.

Description

The remote Ubuntu 16.04 ESM / 18.04 LTS / 20.04 LTS host has a package installed that is affected by a vulnerability as referenced in the USN-5086-1 advisory.

 Johan Almbladh discovered that the eBPF JIT implementation for IBM s390x systems in the Linux kernel miscompiled operations in some situations, allowing circumvention of the BPF verifier. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code.

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected kernel package.

See Also

https://ubuntu.com/security/notices/USN-5086-1

Plugin Details

Severity: Info

ID: 153569

File Name: ubuntu_USN-5086-1.nasl

Version: 1.7

Type: local

Agent: unix

Published: 9/22/2021

Updated: 8/27/2024

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:20.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-86-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.11.0-36-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-86-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-158-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-216-generic, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-158-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-216-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-158-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-86-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.11.0-36-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.11.0-36-generic-lpae, cpe:/o:canonical:ubuntu_linux:16.04:-:esm, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.11.0-36-generic-64k

Required KB Items: Host/cpu, Host/Ubuntu, Host/Ubuntu/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 9/22/2021

Vulnerability Publication Date: 9/22/2021

Reference Information

USN: 5086-1