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Ubuntu 18.04 LTS / 20.04 LTS : Linux kernel vulnerabilities (USN-5514-1)

medium Nessus Plugin ID 163113

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Synopsis

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

Description

The remote Ubuntu 18.04 LTS / 20.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-5514-1 advisory.

 - A use-after-free vulnerability was found in the Linux kernel in drivers/net/hamradio. This flaw allows a local attacker with a user privilege to cause a denial of service (DOS) when the mkiss or sixpack device is detached and reclaim resources early. (CVE-2022-1195)

 - A flaw was found in the Linux kernel. This flaw allows an attacker to crash the Linux kernel by simulating amateur radio from the user space, resulting in a null-ptr-deref vulnerability and a use-after-free vulnerability. (CVE-2022-1199)

 - A use-after-free flaw was found in the Linux kernel's Amateur Radio AX.25 protocol functionality in the way a user connects with the protocol. This flaw allows a local user to crash the system. (CVE-2022-1204)

 - A NULL pointer dereference flaw was found in the Linux kernel's Amateur Radio AX.25 protocol functionality in the way a user connects with the protocol. This flaw allows a local user to crash the system.
 (CVE-2022-1205)

 - With shadow paging enabled, the INVPCID instruction results in a call to kvm_mmu_invpcid_gva. If INVPCID is executed with CR0.PG=0, the invlpg callback is not set and the result is a NULL pointer dereference.
 (CVE-2022-1789)

 - drivers/block/floppy.c in the Linux kernel before 5.17.6 is vulnerable to a denial of service, because of a concurrency use-after-free flaw after deallocating raw_cmd in the raw_cmd_ioctl function.
 (CVE-2022-33981)

Note that Nessus has not tested for these issues 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-5514-1

Plugin Details

Severity: Medium

ID: 163113

File Name: ubuntu_USN-5514-1.nasl

Version: 1.5

Type: local

Agent: unix

Published: 7/14/2022

Updated: 1/9/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 6.9

Temporal Score: 5.4

Vector: CVSS2#AV:L/AC:M/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2022-1789

CVSS v3

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 6.1

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

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1029-ibm, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1049-gkeop, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1066-raspi, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1071-kvm, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1078-gke, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1079-oracle, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1081-aws, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1084-gcp, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1086-azure, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1086-azure-fde, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-122-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-122-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-122-lowlatency

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 7/13/2022

Vulnerability Publication Date: 4/29/2022

Reference Information

CVE: CVE-2022-1195, CVE-2022-1199, CVE-2022-1204, CVE-2022-1205, CVE-2022-1789, CVE-2022-33981

USN: 5514-1