In the Linux kernel, the following vulnerability has been resolved: fs/namespace: fix reference leak in grab_requested_mnt_ns lookup_mnt_ns() already takes a reference on mnt_ns. grab_requested_mnt_ns() doesn't need to take an extra reference.

The remote Ubuntu 24.04 LTS / 25.10 host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-8094-1 advisory.

    Qualys discovered that several vulnerabilities existed in the AppArmor Linux kernel Security Module (LSM).
    An unprivileged local attacker could use these issues to load, replace, and remove arbitrary AppArmor     profiles causing denial of service, exposure of sensitive information (kernel memory), local privilege     escalation, or possibly escape a container. (LP: #2143853)

    It was discovered that some AMD Zen 5 processors supporting RDSEED instruction did not properly handle     entropy, potentially resulting in the consumption of insufficiently random values. A local attacker could     possibly use this issue to influence the values returned by the RDSEED instruction causing loss of     confidentiality and integrity. (CVE-2025-62626)

    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:

    - ARM64 architecture;

    - S390 architecture;

    - x86 architecture;

    - Block layer subsystem;

    - Cryptographic API;

    - Compute Acceleration Framework;

    - ATM drivers;

    - Network block device driver;

    - Bluetooth drivers;

    - Data acquisition framework and drivers;

    - Hardware crypto device drivers;

    - Device frequency scaling framework;

    - Intel Stratix 10 firmware drivers;

    - GPIO subsystem;

    - GPU drivers;

    - Microsoft Hyper-V drivers;

    - CoreSight HW tracing drivers;

    - IIO subsystem;

    - InfiniBand drivers;

    - Input Device core drivers;

    - Input Device (Tablet) drivers;

    - IOMMU subsystem;

    - IRQ chip drivers;

    - Macintosh device drivers;

    - Multiple devices driver;

    - MOST (Media Oriented Systems Transport) drivers;

    - MTD block device drivers;

    - Network drivers;

    - Mellanox network drivers;

    - Texas Instruments network drivers;

    - Ethernet team driver;

    - MediaTek network drivers;

    - NVME drivers;

    - Pin controllers subsystem;

    - x86 platform drivers;

    - Voltage and Current Regulator drivers;

    - Real Time Clock drivers;

    - S/390 drivers;

    - SCSI subsystem;

    - Texas Instruments SoC drivers;

    - SPI subsystem;

    - Media Oriented Systems Transport (MOST) driver;

    - Realtek RTL8723BS SDIO drivers;

    - TCM subsystem;

    - UFS subsystem;

    - DesignWare USB3 driver;

    - USB Gadget drivers;

    - Renesas USBHS Controller drivers;

    - USB Mass Storage drivers;

    - USB Type-C Connector System Software Interface driver;

    - Backlight driver;

    - Framebuffer layer;

    - AFS file system;

    - BFS file system;

    - BTRFS file system;

    - EROFS file system;

    - Ext4 file system;

    - FAT file system;

    - GFS2 file system;

    - Journaling layer for block devices (JBD2);

    - File systems infrastructure;

    - Network file system (NFS) client;

    - NTFS3 file system;

    - OCFS2 file system;

    - SMB network file system;

    - XFS file system;

    - BPF subsystem;

    - MediaTek SoC drivers;

    - Bluetooth subsystem;

    - io_uring subsystem;

    - Locking primitives;

    - Scheduler infrastructure;

    - Timer subsystem;

    - Tracing infrastructure;

    - Kexec HandOver (KHO);

    - Memory management;

    - Ceph Core library;

    - Networking core;

    - Devlink API;

    - IPv4 networking;

    - IPv6 networking;

    - Multipath TCP;

    - Open vSwitch;

    - Network traffic control;

    - VMware vSockets driver;

    - eXpress Data Path;

    - Integrity Measurement Architecture(IMA) framework;

    - Simplified Mandatory Access Control Kernel framework;

    - FireWire sound drivers;

    - HD-audio driver;

    - Turtle Beach Wavefront ALSA driver;

    - SoundWire (SDCA) ASoC drivers; (CVE-2025-40246, CVE-2025-40247, CVE-2025-40248, CVE-2025-40249,     CVE-2025-40250, CVE-2025-40251, CVE-2025-40252, CVE-2025-40253, CVE-2025-40254, CVE-2025-40255,     CVE-2025-40257, CVE-2025-40258, CVE-2025-40259, CVE-2025-40260, CVE-2025-40261, CVE-2025-40262,     CVE-2025-40263, CVE-2025-40264, CVE-2025-40265, CVE-2025-40266, CVE-2025-40290, CVE-2025-40345,     CVE-2025-68212, CVE-2025-68213, CVE-2025-68214, CVE-2025-68215, CVE-2025-68217, CVE-2025-68218,     CVE-2025-68219, CVE-2025-68220, CVE-2025-68221, CVE-2025-68222, CVE-2025-68223, CVE-2025-68225,     CVE-2025-68227, CVE-2025-68228, CVE-2025-68229, CVE-2025-68230, CVE-2025-68231, CVE-2025-68232,     CVE-2025-68233, CVE-2025-68234, CVE-2025-68235, CVE-2025-68236, CVE-2025-68237, CVE-2025-68238,     CVE-2025-68254, CVE-2025-68255, CVE-2025-68256, CVE-2025-68257, CVE-2025-68258, CVE-2025-68259,     CVE-2025-68261, CVE-2025-68262, CVE-2025-68263, CVE-2025-68264, CVE-2025-68265, CVE-2025-68266,     CVE-2025-68281, CVE-2025-68282, CVE-2025-68283, CVE-2025-68284, CVE-2025-68285, CVE-2025-68286,     CVE-2025-68287, CVE-2025-68288, CVE-2025-68289, CVE-2025-68290, CVE-2025-68292, CVE-2025-68293,     CVE-2025-68294, CVE-2025-68295, CVE-2025-68296, CVE-2025-68297, CVE-2025-68298, CVE-2025-68299,     CVE-2025-68300, CVE-2025-68301, CVE-2025-68302, CVE-2025-68303, CVE-2025-68304, CVE-2025-68305,     CVE-2025-68306, CVE-2025-68307, CVE-2025-68308, CVE-2025-68323, CVE-2025-68324, CVE-2025-68325,     CVE-2025-68326, CVE-2025-68327, CVE-2025-68328, CVE-2025-68329, CVE-2025-68330, CVE-2025-68331,     CVE-2025-68332, CVE-2025-68333, CVE-2025-68334, CVE-2025-68335, CVE-2025-68336, CVE-2025-68337,     CVE-2025-68338, CVE-2025-68339, CVE-2025-68340, CVE-2025-68341, CVE-2025-68342, CVE-2025-68343,     CVE-2025-68344, CVE-2025-68345, CVE-2025-68346, CVE-2025-68347, CVE-2025-68348, CVE-2025-68349,     CVE-2025-68352, CVE-2025-68354, CVE-2025-68356, CVE-2025-68358, CVE-2025-68359, CVE-2025-68360,     CVE-2025-68361, CVE-2025-68362, CVE-2025-68363, CVE-2025-68364, CVE-2025-68366, CVE-2025-68367,     CVE-2025-68369, CVE-2025-68370, CVE-2025-68371, CVE-2025-68372, CVE-2025-68373, CVE-2025-68374,     CVE-2025-68375, CVE-2025-68376, CVE-2025-68378, CVE-2025-68379, CVE-2025-68380, CVE-2025-68724,     CVE-2025-68726, CVE-2025-68727, CVE-2025-68728, CVE-2025-68729, CVE-2025-68730, CVE-2025-68732,     CVE-2025-68733, CVE-2025-68735, CVE-2025-68738, CVE-2025-68739, CVE-2025-68740, CVE-2025-68741,     CVE-2025-68742, CVE-2025-68743, CVE-2025-68744, CVE-2025-68746, CVE-2025-68747, CVE-2025-68748,     CVE-2025-68749, CVE-2025-68751, CVE-2025-68752, CVE-2025-68753, CVE-2025-68754, CVE-2025-68755,     CVE-2025-68756, CVE-2025-68757, CVE-2025-68758, CVE-2025-68759, CVE-2025-68760, CVE-2025-68762,     CVE-2025-68763, CVE-2025-68764, CVE-2025-68765, CVE-2025-68766, CVE-2025-71128)

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.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - fs/namespace: fix reference leak in grab_requested_mnt_ns lookup_mnt_ns() already takes a reference on     mnt_ns. grab_requested_mnt_ns() doesn't need to take an extra reference. (CVE-2025-68300)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Severity
302766	Ubuntu 24.04 LTS / 25.10 : Linux kernel vulnerabilities (USN-8094-1)	Nessus	Ubuntu Local Security Checks	high
299777	Oracle Linux 10 / 9 : Unbreakable Enterprise kernel (ELSA-2026-50112)	Nessus	Oracle Linux Local Security Checks	high
278807	Linux Distros Unpatched Vulnerability : CVE-2025-68300	Nessus	Misc.	high

Detections

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CVE-2025-68300

high

Tenable Plugins

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high