Ubuntu 22.04 LTS / 23.10 : Linux kernel vulnerabilities (USN-6680-2)

high Nessus Plugin ID 191739


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


The remote Ubuntu 22.04 LTS / 23.10 host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-6680-2 advisory.

- In the Linux kernel before 6.5.9, there is a NULL pointer dereference in send_acknowledge in net/nfc/nci/spi.c. (CVE-2023-46343)

- bt_sock_recvmsg in net/bluetooth/af_bluetooth.c in the Linux kernel through 6.6.8 has a use-after-free because of a bt_sock_ioctl race condition. (CVE-2023-51779)

- An issue was discovered in the Linux kernel before 6.6.8. rose_ioctl in net/rose/af_rose.c has a use- after-free because of a rose_accept race condition. (CVE-2023-51782)

- An out-of-bounds read vulnerability was found in the NVMe-oF/TCP subsystem in the Linux kernel. This issue may allow a remote attacker to send a crafted TCP packet, triggering a heap-based buffer overflow that results in kmalloc data being printed and potentially leaked to the kernel ring buffer (dmesg).

- An out-of-bounds memory access flaw was found in the io_uring SQ/CQ rings functionality in the Linux kernel. This issue could allow a local user to crash the system. (CVE-2023-6560)

- A flaw was found in the Netfilter subsystem in the Linux kernel. The issue is in the nft_byteorder_eval() function, where the code iterates through a loop and writes to the `dst` array. On each iteration, 8 bytes are written, but `dst` is an array of u32, so each element only has space for 4 bytes. That means every iteration overwrites part of the previous element corrupting this array of u32. This flaw allows a local user to cause a denial of service or potentially break NetFilter functionality. (CVE-2024-0607)

- In the Linux kernel before 6.6.7, an untrusted VMM can trigger int80 syscall handling at any given point.
This is related to arch/x86/coco/tdx/tdx.c and arch/x86/mm/mem_encrypt_amd.c. (CVE-2024-25744)

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


Update the affected kernel package.

See Also


Plugin Details

Severity: High

ID: 191739

File Name: ubuntu_USN-6680-2.nasl

Version: 1.0

Type: local

Agent: unix

Published: 3/8/2024

Updated: 3/8/2024

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

Risk Information


Risk Factor: Medium

Score: 6.7


Risk Factor: Medium

Base Score: 6

Temporal Score: 4.7

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

CVSS Score Source: CVE-2023-51782


Risk Factor: High

Base Score: 7

Temporal Score: 6.3

Vector: CVSS:3.0/AV:L/AC:H/PR:L/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:22.04:-:lts, cpe:/o:canonical:ubuntu_linux:23.10, p-cpe:/a:canonical:ubuntu_linux:linux-image-6.5.0-1016-azure, p-cpe:/a:canonical:ubuntu_linux:linux-image-6.5.0-1016-azure-fde, p-cpe:/a:canonical:ubuntu_linux:linux-image-6.5.0-25-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-6.5.0-25-generic-64k

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: 3/8/2024

Vulnerability Publication Date: 11/16/2023

Reference Information

CVE: CVE-2023-46343, CVE-2023-51779, CVE-2023-51782, CVE-2023-6121, CVE-2023-6560, CVE-2024-0607, CVE-2024-25744

USN: 6680-2