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Ubuntu 22.04 LTS : Linux kernel vulnerabilities (USN-6192-1)

critical Nessus Plugin ID 178657

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Synopsis

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

Description

The remote Ubuntu 22.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-6192-1 advisory.

 Hangyu Hua discovered that the Flower classifier implementation in the Linux kernel contained an out-of- bounds write vulnerability. An attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-35788, LP: #2023577)

 Xingyuan Mo and Gengjia Chen discovered that the io_uring subsystem in the Linux kernel did not properly handle locking when IOPOLL mode is being used. A local attacker could use this to cause a denial of service (system crash). (CVE-2023-2430)

 It was discovered that for some Intel processors the INVLPG instruction implementation did not properly flush global TLB entries when PCIDs are enabled. An attacker could use this to expose sensitive information (kernel memory) or possibly cause undesired behaviors. (LP: #2023220)

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

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-6192-1

Plugin Details

Severity: Critical

ID: 178657

File Name: ubuntu_USN-6192-1.nasl

Version: 1.5

Type: local

Agent: unix

Published: 7/20/2023

Updated: 9/19/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.3

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

CVSS Score Source: CVE-2023-35788

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7

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

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

CVSS v4

Risk Factor: Critical

Base Score: 9.3

Threat Score: 8.5

Threat Vector: CVSS:4.0/E:P

Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:linux-image-5.19.0-46-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.19.0-46-generic-64k, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.19.0-46-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.19.0-1028-aws, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.19.0-1027-gcp, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.19.0-1015-allwinner, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.19.0-1020-starfive

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 6/29/2023

Vulnerability Publication Date: 6/16/2023

Reference Information

CVE: CVE-2023-2430, CVE-2023-35788

USN: 6192-1