The remote Ubuntu 20.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-6726-2 advisory.

    Pratyush Yadav discovered that the Xen network backend implementation in the Linux kernel did not properly     handle zero length data request, leading to a null pointer dereference vulnerability. An attacker in a     guest VM could possibly use this to cause a denial of service (host domain crash). (CVE-2023-46838)

    It was discovered that the IPv6 implementation of the Linux kernel did not properly manage route cache     memory usage. A remote attacker could use this to cause a denial of service (memory exhaustion).
    (CVE-2023-52340)

    It was discovered that the device mapper driver in the Linux kernel did not properly validate target size     during certain memory allocations. A local attacker could use this to cause a denial of service (system     crash). (CVE-2023-52429, CVE-2024-23851)

    Dan Carpenter discovered that the netfilter subsystem in the Linux kernel did not store data in properly     sized memory locations. A local user could use this to cause a denial of service (system crash).
    (CVE-2024-0607)

    Several security issues were discovered in the Linux kernel. An attacker could possibly use these to     compromise the system. This update corrects flaws in the following subsystems:

    - Architecture specifics;

    - Cryptographic API;

    - Android drivers;

    - EDAC drivers;

    - GPU drivers;

    - Media drivers;

    - MTD block device drivers;

    - Network drivers;

    - NVME drivers;

    - TTY drivers;

    - Userspace I/O drivers;

    - F2FS file system;

    - GFS2 file system;

    - IPv6 Networking;

    - AppArmor security module; (CVE-2023-52464, CVE-2023-52448, CVE-2023-52457, CVE-2023-52443,     CVE-2023-52439, CVE-2023-52612, CVE-2024-26633, CVE-2024-26597, CVE-2023-52449, CVE-2023-52444,     CVE-2023-52609, CVE-2023-52469, CVE-2023-52445, CVE-2023-52451, CVE-2023-52470, CVE-2023-52454,     CVE-2023-52436, CVE-2023-52438)

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.

Detections

Analytics

Ubuntu 20.04 LTS : Linux kernel (IoT) vulnerabilities (USN-6726-2)

high Nessus Plugin ID 193376

Version 1.2

Version 1.1

Version 1.0

Version 1.2 Aug 28, 2024, 7:43 PM CVSS metrics ("Cvssv4 score" set to 0.0) CVSSv2 severity (based on None, severity decreased from "High" to "Low") Detection (updated detection logic) Plugin metadata Plugin Feed: 202408281943
Version 1.1 Apr 18, 2024, 3:14 PM CVSSv2 score source (changed from "CVE-2023-52451" to "CVE-2023-52469") Plugin Feed: 202404181514
Version 1.0 Apr 17, 2024, 7:18 AM New Plugin Feed: 202404170718