Detections
Analytics
Ubuntu 20.04 LTS : Linux kernel (KVM) vulnerabilities (USN-8667-1)
critical Nessus Plugin ID 340043
Synopsis
The remote Ubuntu host is missing one or more security updates.Description
The remote Ubuntu 20.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-8667-1 advisory.Siebe Devroe, Hlose Gollier, and Mathy Vanhoef discovered that the WiFi implementation in the Linux kernel did not properly handle aggregated frames in mesh networks, due to an incorrect fix for CVE-2020-24588. A physically proximate attacker could use this issue to inject packets. (CVE-2025-27558)
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:
- x86 architecture;
- Cryptographic API;
- InfiniBand drivers;
- Media drivers;
- NVIDIA Tegra memory controller driver;
- Network drivers;
- NVME drivers;
- File systems infrastructure;
- Ext4 file system;
- Network file system (NFS) server daemon;
- IPv4 networking;
- Network traffic control;
- TCP network protocol;
- Tracing infrastructure;
- Locking primitives;
- B.A.T.M.A.N. meshing protocol;
- Ceph Core library;
- IPv6 networking;
- Multipath TCP;
- Netfilter;
- RxRPC session sockets;
- SCTP protocol;
- SMC sockets;
- TIPC protocol; (CVE-2021-47378, CVE-2026-23392, CVE-2026-31402, CVE-2026-31405, CVE-2026-31414, CVE-2026-31448, CVE-2026-31657, CVE-2026-31668, CVE-2026-43037, CVE-2026-43071, CVE-2026-43198, CVE-2026-43493, CVE-2026-43499, CVE-2026-45988, CVE-2026-46119, CVE-2026-46135, CVE-2026-46266, CVE-2026-46331, CVE-2026-52914, CVE-2026-52924, CVE-2026-52931, CVE-2026-52955, CVE-2026-52958, CVE-2026-52982, CVE-2026-52986, CVE-2026-52989, CVE-2026-52993, CVE-2026-52999, CVE-2026-53002, CVE-2026-53006, CVE-2026-53045, CVE-2026-53088, CVE-2026-53176, CVE-2026-53212, CVE-2026-53228, CVE-2026-53359)
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
Plugin Details
Severity: Critical
ID: 340043
File Name: ubuntu_USN-8667-1.nasl
Version: 1.1
Type: Local
Agent: unix
Family: Ubuntu Local Security Checks
Published: 8/26/2026
Updated: 8/26/2026
Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus
Risk Information
VPR
Risk Factor: Critical
Score: 9.5
Percentile: 99.86
CVSS v2
Risk Factor: Critical
Base Score: 10
Temporal Score: 8.7
Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C
CVSS Score Source: CVE-2026-53228
CVSS v3
Risk Factor: Critical
Base Score: 9.8
Temporal Score: 9.4
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:H/RL:O/RC:C
Vulnerability Information
CPE: cpe:/o:canonical:ubuntu_linux:20.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1149.158-kvm
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: 8/21/2026
Vulnerability Publication Date: 1/28/2022
Reference Information
CVE: CVE-2021-47378, CVE-2025-27558, CVE-2026-23392, CVE-2026-31402, CVE-2026-31405, CVE-2026-31414, CVE-2026-31448, CVE-2026-31657, CVE-2026-31668, CVE-2026-43037, CVE-2026-43071, CVE-2026-43198, CVE-2026-43493, CVE-2026-43499, CVE-2026-45988, CVE-2026-46119, CVE-2026-46135, CVE-2026-46266, CVE-2026-46331, CVE-2026-52914, CVE-2026-52924, CVE-2026-52931, CVE-2026-52955, CVE-2026-52958, CVE-2026-52982, CVE-2026-52986, CVE-2026-52989, CVE-2026-52993, CVE-2026-52999, CVE-2026-53002, CVE-2026-53006, CVE-2026-53045, CVE-2026-53088, CVE-2026-53176, CVE-2026-53212, CVE-2026-53228, CVE-2026-53359
USN: 8667-1