Ubuntu 20.04 LTS : Linux kernel (OEM 5.10) vulnerabilities (USN-5139-1)

high Nessus Plugin ID 155221

Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

The remote Ubuntu 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-5139-1 advisory.

- prealloc_elems_and_freelist in kernel/bpf/stackmap.c in the Linux kernel before 5.14.12 allows unprivileged users to trigger an eBPF multiplication integer overflow with a resultant out-of-bounds write. (CVE-2021-41864)

- A vulnerability was found in the Linux kernel in versions prior to v5.14-rc1. Missing size validations on inbound SCTP packets may allow the kernel to read uninitialized memory. (CVE-2021-3655)

- A flaw was found in the Linux kernel. A use-after-free vulnerability in the NFC stack can lead to a threat to confidentiality, integrity, and system availability. (CVE-2021-3760)

- An issue was discovered in the Linux kernel for powerpc before 5.14.15. It allows a malicious KVM guest to crash the host, when the host is running on Power8, due to an arch/powerpc/kvm/book3s_hv_rmhandlers.S implementation bug in the handling of the SRR1 register values. (CVE-2021-43056)

- An issue was discovered in the Linux kernel before 5.14.15. There is an array-index-out-of-bounds flaw in the detach_capi_ctr function in drivers/isdn/capi/kcapi.c. (CVE-2021-43389)

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 packages.

See Also

https://ubuntu.com/security/notices/USN-5139-1

Plugin Details

Severity: High

ID: 155221

File Name: ubuntu_USN-5139-1.nasl

Version: 1.7

Type: local

Agent: unix

Published: 11/11/2021

Updated: 2/28/2022

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

Risk Information

CVSS Score Source: CVE-2021-3760

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C

Temporal Vector: E:U/RL:OF/RC:C

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:20.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-buildinfo-5.10.0-1051-oem, p-cpe:/a:canonical:ubuntu_linux:linux-headers-5.10.0-1051-oem, p-cpe:/a:canonical:ubuntu_linux:linux-headers-oem-20.04, p-cpe:/a:canonical:ubuntu_linux:linux-headers-oem-20.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-headers-oem-20.04b, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.10.0-1051-oem, p-cpe:/a:canonical:ubuntu_linux:linux-image-oem-20.04, p-cpe:/a:canonical:ubuntu_linux:linux-image-oem-20.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-image-oem-20.04b, p-cpe:/a:canonical:ubuntu_linux:linux-image-unsigned-5.10.0-1051-oem, p-cpe:/a:canonical:ubuntu_linux:linux-modules-5.10.0-1051-oem, p-cpe:/a:canonical:ubuntu_linux:linux-oem-20.04, p-cpe:/a:canonical:ubuntu_linux:linux-oem-20.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-oem-20.04b, p-cpe:/a:canonical:ubuntu_linux:linux-oem-5.10-headers-5.10.0-1051, p-cpe:/a:canonical:ubuntu_linux:linux-oem-5.10-tools-5.10.0-1051, p-cpe:/a:canonical:ubuntu_linux:linux-oem-5.10-tools-host, p-cpe:/a:canonical:ubuntu_linux:linux-tools-5.10.0-1051-oem, p-cpe:/a:canonical:ubuntu_linux:linux-tools-oem-20.04, p-cpe:/a:canonical:ubuntu_linux:linux-tools-oem-20.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-tools-oem-20.04b

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

Exploit Ease: No known exploits are available

Patch Publication Date: 11/11/2021

Vulnerability Publication Date: 8/5/2021

Reference Information

CVE: CVE-2021-3655, CVE-2021-3744, CVE-2021-3760, CVE-2021-3764, CVE-2021-41864, CVE-2021-43056, CVE-2021-43389

USN: 5139-1