In the Linux kernel, the following vulnerability has been resolved: ksm: use range-walk function to jump over holes in scan_get_next_rmap_item Currently, scan_get_next_rmap_item() walks every page address in a VMA to locate mergeable pages. This becomes highly inefficient when scanning large virtual memory areas that contain mostly unmapped regions, causing ksmd to use large amount of cpu without deduplicating much pages. This patch replaces the per-address lookup with a range walk using walk_page_range(). The range walker allows KSM to skip over entire unmapped holes in a VMA, avoiding unnecessary lookups. This problem was previously discussed in [1]. Consider the following test program which creates a 32 TiB mapping in the virtual address space but only populates a single page: #include <unistd.h> #include <stdio.h> #include <sys/mman.h> /* 32 TiB */ const size_t size = 32ul * 1024 * 1024 * 1024 * 1024; int main() { char *area = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_NORESERVE | MAP_PRIVATE | MAP_ANON, -1, 0); if (area == MAP_FAILED) { perror("mmap() failed\n"); return -1; } /* Populate a single page such that we get an anon_vma. */ *area = 0; /* Enable KSM. */ madvise(area, size, MADV_MERGEABLE); pause(); return 0; } $ ./ksm-sparse & $ echo 1 > /sys/kernel/mm/ksm/run Without this patch ksmd uses 100% of the cpu for a long time (more then 1 hour in my test machine) scanning all the 32 TiB virtual address space that contain only one mapped page. This makes ksmd essentially deadlocked not able to deduplicate anything of value. With this patch ksmd walks only the one mapped page and skips the rest of the 32 TiB virtual address space, making the scan fast using little cpu.

The remote Ubuntu 25.10 host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-8029-1 advisory.

    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;

    - MIPS architecture;

    - Nios II architecture;

    - PA-RISC architecture;

    - RISC-V architecture;

    - S390 architecture;

    - Sun Sparc architecture;

    - x86 architecture;

    - Xtensa architecture;

    - Block layer subsystem;

    - Cryptographic API;

    - Compute Acceleration Framework;

    - ACPI drivers;

    - Drivers core;

    - Network block device driver;

    - Bluetooth drivers;

    - Bus devices;

    - Hardware random number generator core;

    - Character device driver;

    - Clock framework and drivers;

    - Data acquisition framework and drivers;

    - CPU frequency scaling framework;

    - Hardware crypto device drivers;

    - CXL (Compute Express Link) drivers;

    - Device frequency scaling framework;

    - ARM SCMI message protocol;

    - GPIO subsystem;

    - GPU drivers;

    - Hardware monitoring drivers;

    - HW tracing;

    - InfiniBand drivers;

    - Input Device (Miscellaneous) drivers;

    - IOMMU subsystem;

    - ISDN/mISDN subsystem;

    - Mailbox framework;

    - Multiple devices driver;

    - Media drivers;

    - Fastrpc Driver;

    - PCI Endpoint Test driver;

    - VMware Balloon Driver;

    - MOST (Media Oriented Systems Transport) drivers;

    - Network drivers;

    - Mellanox network drivers;

    - STMicroelectronics network drivers;

    - NVME drivers;

    - PCI subsystem;

    - Performance monitor drivers;

    - Pin controllers subsystem;

    - Mellanox platform drivers;

    - x86 platform drivers;

    - ARM PM domains;

    - PPS (Pulse Per Second) driver;

    - PTP clock framework;

    - PWM drivers;

    - Remote Processor subsystem;

    - SCSI subsystem;

    - SPI subsystem;

    - Trusted Execution Environment drivers;

    - Thunderbolt and USB4 drivers;

    - TTY drivers;

    - UFS subsystem;

    - Userspace I/O drivers;

    - Cadence USB3 driver;

    - USB Gadget drivers;

    - USB Host Controller drivers;

    - vDPA drivers;

    - Virtio Host (VHOST) subsystem;

    - Framebuffer layer;

    - Xen hypervisor drivers;

    - File systems infrastructure;

    - BTRFS file system;

    - Ceph distributed file system;

    - EROFS file system;

    - Ext4 file system;

    - F2FS file system;

    - GFS2 file system;

    - JFS file system;

    - Network file system (NFS) client;

    - Network file system (NFS) server daemon;

    - NILFS2 file system;

    - File system notification infrastructure;

    - NTFS3 file system;

    - Proc file system;

    - Diskquota system;

    - SMB network file system;

    - BPF subsystem;

    - Mellanox drivers;

    - Memory management;

    - Virtio network driver;

    - Bluetooth subsystem;

    - IP tunnels definitions;

    - io_uring subsystem;

    - Kernel crash support code;

    - Perf events;

    - Kernel futex primitives;

    - PID allocator;

    - Scheduler infrastructure;

    - Syscalls implementation;

    - Timer subsystem;

    - Tracing infrastructure;

    - 9P file system network protocol;

    - Ethernet bridge;

    - Networking core;

    - IPv4 networking;

    - IPv6 networking;

    - Multipath TCP;

    - Netfilter;

    - NFC subsystem;

    - Network traffic control;

    - SCTP protocol;

    - SMC sockets;

    - Sun RPC protocol;

    - TIPC protocol;

    - TLS protocol;

    - VMware vSockets driver;

    - eXpress Data Path;

    - XFRM subsystem;

    - Integrity Measurement Architecture(IMA) framework;

    - ALSA framework;

    - HD-audio driver;

    - AMD SoC Alsa drivers;

    - WCD audio codecs;

    - Intel ASoC drivers;

    - USB sound devices;

    - KVM subsystem; (CVE-2025-40001, CVE-2025-40002, CVE-2025-40003, CVE-2025-40004, CVE-2025-40029,     CVE-2025-40030, CVE-2025-40031, CVE-2025-40032, CVE-2025-40033, CVE-2025-40034, CVE-2025-40035,     CVE-2025-40036, CVE-2025-40037, CVE-2025-40038, CVE-2025-40039, CVE-2025-40040, CVE-2025-40042,     CVE-2025-40043, CVE-2025-40044, CVE-2025-40045, CVE-2025-40046, CVE-2025-40047, CVE-2025-40048,     CVE-2025-40049, CVE-2025-40050, CVE-2025-40051, CVE-2025-40052, CVE-2025-40053, CVE-2025-40054,     CVE-2025-40055, CVE-2025-40056, CVE-2025-40057, CVE-2025-40058, CVE-2025-40059, CVE-2025-40060,     CVE-2025-40061, CVE-2025-40062, CVE-2025-40063, CVE-2025-40064, CVE-2025-40065, CVE-2025-40066,     CVE-2025-40067, CVE-2025-40068, CVE-2025-40069, CVE-2025-40070, CVE-2025-40071, CVE-2025-40072,     CVE-2025-40073, CVE-2025-40074, CVE-2025-40075, CVE-2025-40076, CVE-2025-40077, CVE-2025-40078,     CVE-2025-40079, CVE-2025-40080, CVE-2025-40081, CVE-2025-40082, CVE-2025-40084, CVE-2025-40085,     CVE-2025-40086, CVE-2025-40087, CVE-2025-40088, CVE-2025-40089, CVE-2025-40091, CVE-2025-40092,     CVE-2025-40093, CVE-2025-40094, CVE-2025-40095, CVE-2025-40096, CVE-2025-40097, CVE-2025-40098,     CVE-2025-40099, CVE-2025-40100, CVE-2025-40101, CVE-2025-40102, CVE-2025-40103, CVE-2025-40104,     CVE-2025-40105, CVE-2025-40106, CVE-2025-40110, CVE-2025-40111, CVE-2025-40112, CVE-2025-40113,     CVE-2025-40115, CVE-2025-40116, CVE-2025-40117, CVE-2025-40118, CVE-2025-40119, CVE-2025-40120,     CVE-2025-40121, CVE-2025-40122, CVE-2025-40123, CVE-2025-40124, CVE-2025-40125, CVE-2025-40126,     CVE-2025-40127, CVE-2025-40129, CVE-2025-40130, CVE-2025-40131, CVE-2025-40132, CVE-2025-40133,     CVE-2025-40134, CVE-2025-40135, CVE-2025-40136, CVE-2025-40137, CVE-2025-40138, CVE-2025-40139,     CVE-2025-40140, CVE-2025-40141, CVE-2025-40142, CVE-2025-40143, CVE-2025-40145, CVE-2025-40146,     CVE-2025-40147, CVE-2025-40148, CVE-2025-40149, CVE-2025-40150, CVE-2025-40152, CVE-2025-40153,     CVE-2025-40154, CVE-2025-40155, CVE-2025-40156, CVE-2025-40158, CVE-2025-40159, CVE-2025-40160,     CVE-2025-40161, CVE-2025-40162, CVE-2025-40163, CVE-2025-40164, CVE-2025-40165, CVE-2025-40166,     CVE-2025-40167, CVE-2025-40168, CVE-2025-40169, CVE-2025-40170, CVE-2025-40171, CVE-2025-40172,     CVE-2025-40173, CVE-2025-40174, CVE-2025-40175, CVE-2025-40176, CVE-2025-40177, CVE-2025-40178,     CVE-2025-40179, CVE-2025-40180, CVE-2025-40181, CVE-2025-40182, CVE-2025-40183, CVE-2025-40184,     CVE-2025-40185, CVE-2025-40186, CVE-2025-40187, CVE-2025-40188, CVE-2025-40189, CVE-2025-40191,     CVE-2025-40192, CVE-2025-40193, CVE-2025-40194, CVE-2025-40195, CVE-2025-40196, CVE-2025-40198,     CVE-2025-40199, CVE-2025-40200, CVE-2025-40201, CVE-2025-40203, CVE-2025-40204, CVE-2025-40205,     CVE-2025-40206, CVE-2025-40207, CVE-2025-40208, CVE-2025-40209, CVE-2025-40210, CVE-2025-40211,     CVE-2025-40212, CVE-2025-40213, CVE-2025-40217, CVE-2025-40218, CVE-2025-40219, CVE-2025-40220,     CVE-2025-40221, CVE-2025-40222, CVE-2025-40223, CVE-2025-40224, CVE-2025-40225, CVE-2025-40226,     CVE-2025-40227, CVE-2025-40228, CVE-2025-40229, CVE-2025-40230, CVE-2025-40231, CVE-2025-40233,     CVE-2025-40234, CVE-2025-40235, CVE-2025-40236, CVE-2025-40237, CVE-2025-40238, CVE-2025-40239,     CVE-2025-40240, CVE-2025-40241, CVE-2025-40242, CVE-2025-40243, CVE-2025-40244, CVE-2025-40245,     CVE-2025-40256, CVE-2025-40267, CVE-2025-40268, CVE-2025-40269, CVE-2025-40270, CVE-2025-40271,     CVE-2025-40272, CVE-2025-40273, CVE-2025-40274, CVE-2025-40275, CVE-2025-40276, CVE-2025-40277,     CVE-2025-40278, CVE-2025-40279, CVE-2025-40280, CVE-2025-40281, CVE-2025-40282, CVE-2025-40283,     CVE-2025-40284, CVE-2025-40285, CVE-2025-40286, CVE-2025-40287, CVE-2025-40288, CVE-2025-40289,     CVE-2025-40291, CVE-2025-40292, CVE-2025-40293, CVE-2025-40294, CVE-2025-40295, CVE-2025-40296,     CVE-2025-40297, CVE-2025-40298, CVE-2025-40299, CVE-2025-40301, CVE-2025-40302, CVE-2025-40303,     CVE-2025-40304, CVE-2025-40305, CVE-2025-40306, CVE-2025-40307, CVE-2025-40308, CVE-2025-40309,     CVE-2025-40310, CVE-2025-40311, CVE-2025-40312, CVE-2025-40313, CVE-2025-40314, CVE-2025-40315,     CVE-2025-40316, CVE-2025-40317, CVE-2025-40318, CVE-2025-40319, CVE-2025-40320, CVE-2025-40321,     CVE-2025-40322, CVE-2025-40323, CVE-2025-40324, CVE-2025-40326, CVE-2025-40327, CVE-2025-40328,     CVE-2025-40329, CVE-2025-40330, CVE-2025-40331, CVE-2025-40332, CVE-2025-40333, CVE-2025-40334,     CVE-2025-40335, CVE-2025-40336, CVE-2025-40337, CVE-2025-40338, CVE-2025-40339, CVE-2025-40340,     CVE-2025-40341, CVE-2025-40342, CVE-2025-40343, CVE-2025-40344, CVE-2025-40346, CVE-2025-40347,     CVE-2025-40349, CVE-2025-40350, CVE-2025-40351, CVE-2025-40352, CVE-2025-40353, CVE-2025-40354,     CVE-2025-40355, CVE-2025-40356, CVE-2025-40357, CVE-2025-40358, CVE-2025-40359, CVE-2025-40360,     CVE-2025-40362, CVE-2025-40363, CVE-2025-68167, CVE-2025-68168, CVE-2025-68169, CVE-2025-68170,     CVE-2025-68171, CVE-2025-68172, CVE-2025-68173, CVE-2025-68174, CVE-2025-68175, CVE-2025-68176,     CVE-2025-68177, CVE-2025-68178, CVE-2025-68179, CVE-2025-68180, CVE-2025-68181, CVE-2025-68182,     CVE-2025-68183, CVE-2025-68184, CVE-2025-68185, CVE-2025-68186, CVE-2025-68187, CVE-2025-68188,     CVE-2025-68189, CVE-2025-68190, CVE-2025-68191, CVE-2025-68192, CVE-2025-68193, CVE-2025-68194,     CVE-2025-68196, CVE-2025-68197, CVE-2025-68198, CVE-2025-68199, CVE-2025-68200, CVE-2025-68201,     CVE-2025-68202, CVE-2025-68204, CVE-2025-68205, CVE-2025-68206, CVE-2025-68207, CVE-2025-68208,     CVE-2025-68209, CVE-2025-68210, CVE-2025-68211, CVE-2025-68239, CVE-2025-68240, CVE-2025-68241,     CVE-2025-68242, CVE-2025-68243, CVE-2025-68244, CVE-2025-68245, CVE-2025-68246, CVE-2025-68247,     CVE-2025-68248, CVE-2025-68249, CVE-2025-68250, CVE-2025-68251, CVE-2025-68253, CVE-2025-68309,     CVE-2025-68310, CVE-2025-68311, CVE-2025-68312, CVE-2025-68313, CVE-2025-68314, CVE-2025-68315,     CVE-2025-68316, CVE-2025-68317, CVE-2025-68318, CVE-2025-68319, CVE-2025-68320, CVE-2025-68321,     CVE-2025-68322, CVE-2025-68734)

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 remote Ubuntu 25.10 host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-8030-1 advisory.

    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;

    - MIPS architecture;

    - Nios II architecture;

    - PA-RISC architecture;

    - RISC-V architecture;

    - S390 architecture;

    - Sun Sparc architecture;

    - x86 architecture;

    - Xtensa architecture;

    - Block layer subsystem;

    - Cryptographic API;

    - Compute Acceleration Framework;

    - ACPI drivers;

    - Drivers core;

    - Network block device driver;

    - Bluetooth drivers;

    - Bus devices;

    - Hardware random number generator core;

    - Character device driver;

    - Clock framework and drivers;

    - Data acquisition framework and drivers;

    - CPU frequency scaling framework;

    - Hardware crypto device drivers;

    - CXL (Compute Express Link) drivers;

    - Device frequency scaling framework;

    - ARM SCMI message protocol;

    - GPIO subsystem;

    - GPU drivers;

    - Hardware monitoring drivers;

    - HW tracing;

    - InfiniBand drivers;

    - Input Device (Miscellaneous) drivers;

    - IOMMU subsystem;

    - ISDN/mISDN subsystem;

    - Mailbox framework;

    - Multiple devices driver;

    - Media drivers;

    - Fastrpc Driver;

    - PCI Endpoint Test driver;

    - VMware Balloon Driver;

    - MOST (Media Oriented Systems Transport) drivers;

    - Network drivers;

    - Mellanox network drivers;

    - STMicroelectronics network drivers;

    - NVME drivers;

    - PCI subsystem;

    - Performance monitor drivers;

    - Pin controllers subsystem;

    - Mellanox platform drivers;

    - x86 platform drivers;

    - ARM PM domains;

    - PPS (Pulse Per Second) driver;

    - PTP clock framework;

    - PWM drivers;

    - Remote Processor subsystem;

    - SCSI subsystem;

    - SPI subsystem;

    - Trusted Execution Environment drivers;

    - Thunderbolt and USB4 drivers;

    - TTY drivers;

    - UFS subsystem;

    - Userspace I/O drivers;

    - Cadence USB3 driver;

    - USB Gadget drivers;

    - USB Host Controller drivers;

    - vDPA drivers;

    - Virtio Host (VHOST) subsystem;

    - Framebuffer layer;

    - Xen hypervisor drivers;

    - File systems infrastructure;

    - BTRFS file system;

    - Ceph distributed file system;

    - EROFS file system;

    - Ext4 file system;

    - F2FS file system;

    - GFS2 file system;

    - JFS file system;

    - Network file system (NFS) client;

    - Network file system (NFS) server daemon;

    - NILFS2 file system;

    - File system notification infrastructure;

    - NTFS3 file system;

    - Proc file system;

    - Diskquota system;

    - SMB network file system;

    - BPF subsystem;

    - Mellanox drivers;

    - Memory management;

    - Virtio network driver;

    - Bluetooth subsystem;

    - IP tunnels definitions;

    - io_uring subsystem;

    - Kernel crash support code;

    - Perf events;

    - Kernel futex primitives;

    - PID allocator;

    - Scheduler infrastructure;

    - Syscalls implementation;

    - Timer subsystem;

    - Tracing infrastructure;

    - 9P file system network protocol;

    - Ethernet bridge;

    - Networking core;

    - IPv4 networking;

    - IPv6 networking;

    - Multipath TCP;

    - Netfilter;

    - NFC subsystem;

    - Network traffic control;

    - SCTP protocol;

    - SMC sockets;

    - Sun RPC protocol;

    - TIPC protocol;

    - TLS protocol;

    - VMware vSockets driver;

    - eXpress Data Path;

    - XFRM subsystem;

    - Integrity Measurement Architecture(IMA) framework;

    - ALSA framework;

    - HD-audio driver;

    - AMD SoC Alsa drivers;

    - WCD audio codecs;

    - Intel ASoC drivers;

    - USB sound devices;

    - KVM subsystem; (CVE-2025-40001, CVE-2025-40002, CVE-2025-40003, CVE-2025-40004, CVE-2025-40029,     CVE-2025-40030, CVE-2025-40031, CVE-2025-40032, CVE-2025-40033, CVE-2025-40034, CVE-2025-40035,     CVE-2025-40036, CVE-2025-40037, CVE-2025-40038, CVE-2025-40039, CVE-2025-40040, CVE-2025-40042,     CVE-2025-40043, CVE-2025-40044, CVE-2025-40045, CVE-2025-40046, CVE-2025-40047, CVE-2025-40048,     CVE-2025-40049, CVE-2025-40050, CVE-2025-40051, CVE-2025-40052, CVE-2025-40053, CVE-2025-40054,     CVE-2025-40055, CVE-2025-40056, CVE-2025-40057, CVE-2025-40058, CVE-2025-40059, CVE-2025-40060,     CVE-2025-40061, CVE-2025-40062, CVE-2025-40063, CVE-2025-40064, CVE-2025-40065, CVE-2025-40066,     CVE-2025-40067, CVE-2025-40068, CVE-2025-40069, CVE-2025-40070, CVE-2025-40071, CVE-2025-40072,     CVE-2025-40073, CVE-2025-40074, CVE-2025-40075, CVE-2025-40076, CVE-2025-40077, CVE-2025-40078,     CVE-2025-40079, CVE-2025-40080, CVE-2025-40081, CVE-2025-40082, CVE-2025-40084, CVE-2025-40085,     CVE-2025-40086, CVE-2025-40087, CVE-2025-40088, CVE-2025-40089, CVE-2025-40091, CVE-2025-40092,     CVE-2025-40093, CVE-2025-40094, CVE-2025-40095, CVE-2025-40096, CVE-2025-40097, CVE-2025-40098,     CVE-2025-40099, CVE-2025-40100, CVE-2025-40101, CVE-2025-40102, CVE-2025-40103, CVE-2025-40104,     CVE-2025-40105, CVE-2025-40106, CVE-2025-40110, CVE-2025-40111, CVE-2025-40112, CVE-2025-40113,     CVE-2025-40115, CVE-2025-40116, CVE-2025-40117, CVE-2025-40118, CVE-2025-40119, CVE-2025-40120,     CVE-2025-40121, CVE-2025-40122, CVE-2025-40123, CVE-2025-40124, CVE-2025-40125, CVE-2025-40126,     CVE-2025-40127, CVE-2025-40129, CVE-2025-40130, CVE-2025-40131, CVE-2025-40132, CVE-2025-40133,     CVE-2025-40134, CVE-2025-40135, CVE-2025-40136, CVE-2025-40137, CVE-2025-40138, CVE-2025-40139,     CVE-2025-40140, CVE-2025-40141, CVE-2025-40142, CVE-2025-40143, CVE-2025-40145, CVE-2025-40146,     CVE-2025-40147, CVE-2025-40148, CVE-2025-40149, CVE-2025-40150, CVE-2025-40152, CVE-2025-40153,     CVE-2025-40154, CVE-2025-40155, CVE-2025-40156, CVE-2025-40158, CVE-2025-40159, CVE-2025-40160,     CVE-2025-40161, CVE-2025-40162, CVE-2025-40163, CVE-2025-40164, CVE-2025-40165, CVE-2025-40166,     CVE-2025-40167, CVE-2025-40168, CVE-2025-40169, CVE-2025-40170, CVE-2025-40171, CVE-2025-40172,     CVE-2025-40173, CVE-2025-40174, CVE-2025-40175, CVE-2025-40176, CVE-2025-40177, CVE-2025-40178,     CVE-2025-40179, CVE-2025-40180, CVE-2025-40182, CVE-2025-40183, CVE-2025-40184, CVE-2025-40185,     CVE-2025-40186, CVE-2025-40187, CVE-2025-40188, CVE-2025-40189, CVE-2025-40191, CVE-2025-40192,     CVE-2025-40193, CVE-2025-40194, CVE-2025-40195, CVE-2025-40196, CVE-2025-40198, CVE-2025-40199,     CVE-2025-40200, CVE-2025-40201, CVE-2025-40203, CVE-2025-40204, CVE-2025-40205, CVE-2025-40206,     CVE-2025-40207, CVE-2025-40208, CVE-2025-40209, CVE-2025-40210, CVE-2025-40211, CVE-2025-40212,     CVE-2025-40213, CVE-2025-40217, CVE-2025-40218, CVE-2025-40219, CVE-2025-40220, CVE-2025-40221,     CVE-2025-40222, CVE-2025-40223, CVE-2025-40224, CVE-2025-40225, CVE-2025-40226, CVE-2025-40227,     CVE-2025-40228, CVE-2025-40229, CVE-2025-40230, CVE-2025-40231, CVE-2025-40233, CVE-2025-40234,     CVE-2025-40235, CVE-2025-40236, CVE-2025-40237, CVE-2025-40238, CVE-2025-40239, CVE-2025-40240,     CVE-2025-40241, CVE-2025-40242, CVE-2025-40243, CVE-2025-40244, CVE-2025-40245, CVE-2025-40256,     CVE-2025-40267, CVE-2025-40268, CVE-2025-40269, CVE-2025-40270, CVE-2025-40271, CVE-2025-40272,     CVE-2025-40273, CVE-2025-40274, CVE-2025-40275, CVE-2025-40276, CVE-2025-40277, CVE-2025-40278,     CVE-2025-40279, CVE-2025-40280, CVE-2025-40281, CVE-2025-40282, CVE-2025-40283, CVE-2025-40284,     CVE-2025-40285, CVE-2025-40286, CVE-2025-40287, CVE-2025-40288, CVE-2025-40289, CVE-2025-40291,     CVE-2025-40292, CVE-2025-40293, CVE-2025-40294, CVE-2025-40295, CVE-2025-40296, CVE-2025-40297,     CVE-2025-40298, CVE-2025-40299, CVE-2025-40301, CVE-2025-40302, CVE-2025-40303, CVE-2025-40304,     CVE-2025-40305, CVE-2025-40306, CVE-2025-40307, CVE-2025-40308, CVE-2025-40309, CVE-2025-40310,     CVE-2025-40311, CVE-2025-40312, CVE-2025-40313, CVE-2025-40314, CVE-2025-40315, CVE-2025-40316,     CVE-2025-40317, CVE-2025-40318, CVE-2025-40319, CVE-2025-40320, CVE-2025-40321, CVE-2025-40322,     CVE-2025-40323, CVE-2025-40324, CVE-2025-40326, CVE-2025-40327, CVE-2025-40328, CVE-2025-40329,     CVE-2025-40330, CVE-2025-40331, CVE-2025-40332, CVE-2025-40333, CVE-2025-40334, CVE-2025-40335,     CVE-2025-40336, CVE-2025-40337, CVE-2025-40338, CVE-2025-40339, CVE-2025-40340, CVE-2025-40341,     CVE-2025-40342, CVE-2025-40343, CVE-2025-40344, CVE-2025-40346, CVE-2025-40347, CVE-2025-40349,     CVE-2025-40350, CVE-2025-40351, CVE-2025-40352, CVE-2025-40353, CVE-2025-40354, CVE-2025-40355,     CVE-2025-40356, CVE-2025-40357, CVE-2025-40358, CVE-2025-40359, CVE-2025-40360, CVE-2025-40362,     CVE-2025-40363, CVE-2025-68167, CVE-2025-68168, CVE-2025-68169, CVE-2025-68170, CVE-2025-68171,     CVE-2025-68172, CVE-2025-68173, CVE-2025-68174, CVE-2025-68175, CVE-2025-68176, CVE-2025-68177,     CVE-2025-68178, CVE-2025-68179, CVE-2025-68180, CVE-2025-68181, CVE-2025-68182, CVE-2025-68183,     CVE-2025-68184, CVE-2025-68185, CVE-2025-68186, CVE-2025-68187, CVE-2025-68188, CVE-2025-68189,     CVE-2025-68190, CVE-2025-68191, CVE-2025-68192, CVE-2025-68193, CVE-2025-68194, CVE-2025-68196,     CVE-2025-68197, CVE-2025-68198, CVE-2025-68199, CVE-2025-68200, CVE-2025-68201, CVE-2025-68202,     CVE-2025-68204, CVE-2025-68205, CVE-2025-68206, CVE-2025-68207, CVE-2025-68208, CVE-2025-68209,     CVE-2025-68210, CVE-2025-68211, CVE-2025-68239, CVE-2025-68240, CVE-2025-68241, CVE-2025-68242,     CVE-2025-68243, CVE-2025-68244, CVE-2025-68245, CVE-2025-68246, CVE-2025-68247, CVE-2025-68248,     CVE-2025-68249, CVE-2025-68250, CVE-2025-68251, CVE-2025-68253, CVE-2025-68309, CVE-2025-68310,     CVE-2025-68311, CVE-2025-68312, CVE-2025-68313, CVE-2025-68314, CVE-2025-68315, CVE-2025-68316,     CVE-2025-68317, CVE-2025-68318, CVE-2025-68319, CVE-2025-68320, CVE-2025-68321, CVE-2025-68322,     CVE-2025-68734)

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 remote Debian 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-4475 advisory.

    -------------------------------------------------------------------------     Debian LTS Advisory DLA-4475-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                        Ben Hutchings     February 10, 2026                             https://wiki.debian.org/LTS
    -------------------------------------------------------------------------

    Package        : linux     Version        : 5.10.249-1     CVE ID         : CVE-2022-48744 CVE-2022-49168 CVE-2022-49465 CVE-2022-49711                      CVE-2022-49743 CVE-2023-52975 CVE-2023-54207 CVE-2023-54321                      CVE-2024-36903 CVE-2024-36927 CVE-2025-22022 CVE-2025-22121                      CVE-2025-37830 CVE-2025-38022 CVE-2025-38119 CVE-2025-38556                      CVE-2025-38591 CVE-2025-39702 CVE-2025-40110 CVE-2025-40215                      CVE-2025-68211 CVE-2025-68255 CVE-2025-68257 CVE-2025-68258                      CVE-2025-68261 CVE-2025-68264 CVE-2025-68266 CVE-2025-68282                      CVE-2025-68325 CVE-2025-68332 CVE-2025-68336 CVE-2025-68337                      CVE-2025-68344 CVE-2025-68346 CVE-2025-68349 CVE-2025-68354                      CVE-2025-68362 CVE-2025-68364 CVE-2025-68366 CVE-2025-68367                      CVE-2025-68372 CVE-2025-68724 CVE-2025-68725 CVE-2025-68733                      CVE-2025-68740 CVE-2025-68757 CVE-2025-68758 CVE-2025-68759                      CVE-2025-68764 CVE-2025-68767 CVE-2025-68769 CVE-2025-68771                      CVE-2025-68773 CVE-2025-68774 CVE-2025-68776 CVE-2025-68777                      CVE-2025-68782 CVE-2025-68783 CVE-2025-68785 CVE-2025-68787                      CVE-2025-68788 CVE-2025-68795 CVE-2025-68796 CVE-2025-68797                      CVE-2025-68799 CVE-2025-68800 CVE-2025-68801 CVE-2025-68803                      CVE-2025-68804 CVE-2025-68808 CVE-2025-68813 CVE-2025-68815                      CVE-2025-68816 CVE-2025-68818 CVE-2025-68819 CVE-2025-68820                      CVE-2025-71064 CVE-2025-71066 CVE-2025-71069 CVE-2025-71075                      CVE-2025-71077 CVE-2025-71079 CVE-2025-71084 CVE-2025-71085                      CVE-2025-71086 CVE-2025-71087 CVE-2025-71091 CVE-2025-71093                      CVE-2025-71096 CVE-2025-71097 CVE-2025-71098 CVE-2025-71102                      CVE-2025-71104 CVE-2025-71105 CVE-2025-71108 CVE-2025-71111                      CVE-2025-71112 CVE-2025-71113 CVE-2025-71114 CVE-2025-71116                      CVE-2025-71118 CVE-2025-71120 CVE-2025-71123 CVE-2025-71125                      CVE-2025-71127 CVE-2025-71131 CVE-2025-71136 CVE-2025-71137                      CVE-2025-71154 CVE-2025-71162 CVE-2025-71182 CVE-2025-71185                      CVE-2025-71186 CVE-2025-71190 CVE-2025-71191 CVE-2025-71194                      CVE-2025-71196 CVE-2025-71197 CVE-2025-71199 CVE-2026-22976                      CVE-2026-22977 CVE-2026-22978 CVE-2026-22980 CVE-2026-22990                      CVE-2026-22991 CVE-2026-22997 CVE-2026-22998 CVE-2026-22999                      CVE-2026-23001 CVE-2026-23003 CVE-2026-23011 CVE-2026-23020                      CVE-2026-23021 CVE-2026-23033 CVE-2026-23038 CVE-2026-23047                      CVE-2026-23049 CVE-2026-23056 CVE-2026-23058 CVE-2026-23060                      CVE-2026-23061 CVE-2026-23063 CVE-2026-23064 CVE-2026-23071                      CVE-2026-23073 CVE-2026-23074 CVE-2026-23075 CVE-2026-23076                      CVE-2026-23080 CVE-2026-23083 CVE-2026-23084 CVE-2026-23085                      CVE-2026-23087 CVE-2026-23089 CVE-2026-23090 CVE-2026-23091                      CVE-2026-23095 CVE-2026-23096 CVE-2026-23097 CVE-2026-23098                      CVE-2026-23101 CVE-2026-23103 CVE-2026-23105 CVE-2026-23108                      CVE-2026-23110     Debian Bug     : 1122193 1123750

    Several vulnerabilities have been discovered in the Linux kernel that     may lead to a privilege escalation, denial of service or information     leaks.

    For Debian 11 bullseye, these problems have been fixed in version     5.10.249-1.  This update also fixes several bugs reported to Debian.
    It additionally includes many more bug fixes from stable updates     5.10.248 and 5.10.249.

    We recommend that you upgrade your linux packages.

    For the detailed security status of linux please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/linux

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS     Attachment:
    signature.asc     Description: PGP signature

Tenable has extracted the preceding description block directly from the Debian 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 remote Debian 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-4476 advisory.

    -------------------------------------------------------------------------     Debian LTS Advisory DLA-4476-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                        Ben Hutchings     February 10, 2026                             https://wiki.debian.org/LTS
    -------------------------------------------------------------------------

    Package        : linux-6.1     Version        : 6.1.162-1~deb11u1     CVE ID         : CVE-2023-52658 CVE-2023-53421 CVE-2023-54285 CVE-2024-42079                      CVE-2024-46786 CVE-2024-49968 CVE-2025-21946 CVE-2025-22022                      CVE-2025-22083 CVE-2025-22090 CVE-2025-22107 CVE-2025-22111                      CVE-2025-22121 CVE-2025-37926 CVE-2025-38022 CVE-2025-38104                      CVE-2025-38125 CVE-2025-38129 CVE-2025-38232 CVE-2025-38361                      CVE-2025-38408 CVE-2025-38591 CVE-2025-38718 CVE-2025-39721                      CVE-2025-39871 CVE-2025-40039 CVE-2025-40110 CVE-2025-40149                      CVE-2025-40164 CVE-2025-40215 CVE-2025-68211 CVE-2025-68223                      CVE-2025-68254 CVE-2025-68255 CVE-2025-68256 CVE-2025-68257                      CVE-2025-68258 CVE-2025-68259 CVE-2025-68261 CVE-2025-68263                      CVE-2025-68264 CVE-2025-68266 CVE-2025-68291 CVE-2025-68325                      CVE-2025-68332 CVE-2025-68335 CVE-2025-68336 CVE-2025-68337                      CVE-2025-68340 CVE-2025-68344 CVE-2025-68345 CVE-2025-68346                      CVE-2025-68347 CVE-2025-68349 CVE-2025-68354 CVE-2025-68362                      CVE-2025-68363 CVE-2025-68364 CVE-2025-68365 CVE-2025-68366                      CVE-2025-68367 CVE-2025-68369 CVE-2025-68371 CVE-2025-68372                      CVE-2025-68380 CVE-2025-68724 CVE-2025-68725 CVE-2025-68727                      CVE-2025-68728 CVE-2025-68732 CVE-2025-68733 CVE-2025-68740                      CVE-2025-68742 CVE-2025-68746 CVE-2025-68753 CVE-2025-68757                      CVE-2025-68758 CVE-2025-68759 CVE-2025-68764 CVE-2025-68765                      CVE-2025-68766 CVE-2025-68767 CVE-2025-68769 CVE-2025-68771                      CVE-2025-68772 CVE-2025-68773 CVE-2025-68774 CVE-2025-68776                      CVE-2025-68777 CVE-2025-68778 CVE-2025-68780 CVE-2025-68781                      CVE-2025-68782 CVE-2025-68783 CVE-2025-68785 CVE-2025-68786                      CVE-2025-68787 CVE-2025-68788 CVE-2025-68795 CVE-2025-68796                      CVE-2025-68797 CVE-2025-68798 CVE-2025-68799 CVE-2025-68800                      CVE-2025-68801 CVE-2025-68803 CVE-2025-68804 CVE-2025-68806                      CVE-2025-68808 CVE-2025-68813 CVE-2025-68814 CVE-2025-68815                      CVE-2025-68816 CVE-2025-68817 CVE-2025-68818 CVE-2025-68819                      CVE-2025-68820 CVE-2025-68821 CVE-2025-71064 CVE-2025-71066                      CVE-2025-71069 CVE-2025-71071 CVE-2025-71075 CVE-2025-71077                      CVE-2025-71078 CVE-2025-71079 CVE-2025-71081 CVE-2025-71082                      CVE-2025-71083 CVE-2025-71084 CVE-2025-71085 CVE-2025-71086                      CVE-2025-71087 CVE-2025-71088 CVE-2025-71091 CVE-2025-71093                      CVE-2025-71094 CVE-2025-71095 CVE-2025-71096 CVE-2025-71097                      CVE-2025-71098 CVE-2025-71102 CVE-2025-71104 CVE-2025-71105                      CVE-2025-71108 CVE-2025-71111 CVE-2025-71112 CVE-2025-71113                      CVE-2025-71114 CVE-2025-71116 CVE-2025-71118 CVE-2025-71119                      CVE-2025-71120 CVE-2025-71121 CVE-2025-71123 CVE-2025-71125                      CVE-2025-71126 CVE-2025-71127 CVE-2025-71130 CVE-2025-71131                      CVE-2025-71132 CVE-2025-71133 CVE-2025-71136 CVE-2025-71137                      CVE-2025-71147 CVE-2025-71149 CVE-2025-71150 CVE-2025-71154                      CVE-2025-71162 CVE-2025-71163 CVE-2025-71180 CVE-2025-71182                      CVE-2025-71183 CVE-2025-71185 CVE-2025-71186 CVE-2025-71189                      CVE-2025-71190 CVE-2025-71191 CVE-2025-71192 CVE-2025-71194                      CVE-2025-71196 CVE-2025-71197 CVE-2025-71199 CVE-2026-22976                      CVE-2026-22977 CVE-2026-22978 CVE-2026-22979 CVE-2026-22980                      CVE-2026-22982 CVE-2026-22984 CVE-2026-22990 CVE-2026-22991                      CVE-2026-22992 CVE-2026-22994 CVE-2026-22997 CVE-2026-22998                      CVE-2026-22999 CVE-2026-23001 CVE-2026-23003 CVE-2026-23005                      CVE-2026-23006 CVE-2026-23010 CVE-2026-23011 CVE-2026-23019                      CVE-2026-23020 CVE-2026-23021 CVE-2026-23025 CVE-2026-23026                      CVE-2026-23030 CVE-2026-23031 CVE-2026-23033 CVE-2026-23037                      CVE-2026-23038 CVE-2026-23047 CVE-2026-23049 CVE-2026-23054                      CVE-2026-23056 CVE-2026-23058 CVE-2026-23060 CVE-2026-23061                      CVE-2026-23063 CVE-2026-23064 CVE-2026-23068 CVE-2026-23069                      CVE-2026-23071 CVE-2026-23073 CVE-2026-23074 CVE-2026-23075                      CVE-2026-23076 CVE-2026-23078 CVE-2026-23080 CVE-2026-23083                      CVE-2026-23084 CVE-2026-23085 CVE-2026-23086 CVE-2026-23087                      CVE-2026-23089 CVE-2026-23090 CVE-2026-23091 CVE-2026-23093                      CVE-2026-23095 CVE-2026-23096 CVE-2026-23097 CVE-2026-23098                      CVE-2026-23099 CVE-2026-23101 CVE-2026-23102 CVE-2026-23103                      CVE-2026-23105 CVE-2026-23107 CVE-2026-23108 CVE-2026-23110     Debian Bug     : 1121535 1122193

    Several vulnerabilities have been discovered in the Linux kernel that     may lead to a privilege escalation, denial of service or information     leaks.

    For Debian 11 bullseye, these problems have been fixed in version     6.1.162-1~deb11u1.  This update also fixes several bugs reported to     Debian.  It additionally includes many more bug fixes from stable     updates 6.1.160-6.1.162 inclusive.

    We recommend that you upgrade your linux-6.1 packages.

    For the detailed security status of linux-6.1 please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/linux-6.1

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS     Attachment:
    signature.asc     Description: PGP signature

Tenable has extracted the preceding description block directly from the Debian 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 remote Debian 12 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-6127 advisory.

    - -------------------------------------------------------------------------     Debian Security Advisory DSA-6127-1                   security@debian.org     https://www.debian.org/security/                     Salvatore Bonaccorso     February 09, 2026                     https://www.debian.org/security/faq
    - -------------------------------------------------------------------------

    Package        : linux     CVE ID         : CVE-2023-52658 CVE-2023-53421 CVE-2023-54285 CVE-2024-42079                      CVE-2024-46786 CVE-2024-49968 CVE-2025-21946 CVE-2025-22022                      CVE-2025-22083 CVE-2025-22090 CVE-2025-22107 CVE-2025-22111                      CVE-2025-22121 CVE-2025-37926 CVE-2025-38022 CVE-2025-38104                      CVE-2025-38125 CVE-2025-38129 CVE-2025-38232 CVE-2025-38361                      CVE-2025-38408 CVE-2025-38591 CVE-2025-38718 CVE-2025-39721                      CVE-2025-39871 CVE-2025-40039 CVE-2025-40110 CVE-2025-40149                      CVE-2025-40164 CVE-2025-40215 CVE-2025-68211 CVE-2025-68223                      CVE-2025-68254 CVE-2025-68255 CVE-2025-68256 CVE-2025-68257                      CVE-2025-68258 CVE-2025-68259 CVE-2025-68261 CVE-2025-68263                      CVE-2025-68264 CVE-2025-68266 CVE-2025-68291 CVE-2025-68325                      CVE-2025-68332 CVE-2025-68335 CVE-2025-68336 CVE-2025-68337                      CVE-2025-68340 CVE-2025-68344 CVE-2025-68345 CVE-2025-68346                      CVE-2025-68347 CVE-2025-68349 CVE-2025-68354 CVE-2025-68362                      CVE-2025-68363 CVE-2025-68364 CVE-2025-68365 CVE-2025-68366                      CVE-2025-68367 CVE-2025-68369 CVE-2025-68371 CVE-2025-68372                      CVE-2025-68380 CVE-2025-68724 CVE-2025-68725 CVE-2025-68727                      CVE-2025-68728 CVE-2025-68732 CVE-2025-68733 CVE-2025-68740                      CVE-2025-68742 CVE-2025-68746 CVE-2025-68753 CVE-2025-68757                      CVE-2025-68758 CVE-2025-68759 CVE-2025-68764 CVE-2025-68765                      CVE-2025-68766 CVE-2025-68767 CVE-2025-68769 CVE-2025-68771                      CVE-2025-68772 CVE-2025-68773 CVE-2025-68774 CVE-2025-68776                      CVE-2025-68777 CVE-2025-68778 CVE-2025-68780 CVE-2025-68781                      CVE-2025-68782 CVE-2025-68783 CVE-2025-68785 CVE-2025-68786                      CVE-2025-68787 CVE-2025-68788 CVE-2025-68789 CVE-2025-68795                      CVE-2025-68796 CVE-2025-68797 CVE-2025-68798 CVE-2025-68799                      CVE-2025-68800 CVE-2025-68801 CVE-2025-68803 CVE-2025-68804                      CVE-2025-68806 CVE-2025-68808 CVE-2025-68813 CVE-2025-68814                      CVE-2025-68815 CVE-2025-68816 CVE-2025-68817 CVE-2025-68818                      CVE-2025-68819 CVE-2025-68820 CVE-2025-68821 CVE-2025-71064                      CVE-2025-71066 CVE-2025-71069 CVE-2025-71071 CVE-2025-71075                      CVE-2025-71077 CVE-2025-71078 CVE-2025-71079 CVE-2025-71081                      CVE-2025-71082 CVE-2025-71083 CVE-2025-71084 CVE-2025-71085                      CVE-2025-71086 CVE-2025-71087 CVE-2025-71088 CVE-2025-71091                      CVE-2025-71093 CVE-2025-71094 CVE-2025-71095 CVE-2025-71096                      CVE-2025-71097 CVE-2025-71098 CVE-2025-71102 CVE-2025-71104                      CVE-2025-71105 CVE-2025-71108 CVE-2025-71111 CVE-2025-71112                      CVE-2025-71113 CVE-2025-71114 CVE-2025-71116 CVE-2025-71118                      CVE-2025-71119 CVE-2025-71120 CVE-2025-71121 CVE-2025-71123                      CVE-2025-71125 CVE-2025-71126 CVE-2025-71127 CVE-2025-71130                      CVE-2025-71131 CVE-2025-71132 CVE-2025-71133 CVE-2025-71136                      CVE-2025-71137 CVE-2025-71147 CVE-2025-71149 CVE-2025-71150                      CVE-2025-71154 CVE-2025-71162 CVE-2025-71163 CVE-2025-71180                      CVE-2025-71182 CVE-2025-71183 CVE-2025-71185 CVE-2025-71186                      CVE-2025-71189 CVE-2025-71190 CVE-2025-71191 CVE-2025-71192                      CVE-2025-71194 CVE-2025-71196 CVE-2025-71197 CVE-2025-71199                      CVE-2026-22976 CVE-2026-22977 CVE-2026-22978 CVE-2026-22979                      CVE-2026-22980 CVE-2026-22982 CVE-2026-22984 CVE-2026-22990                      CVE-2026-22991 CVE-2026-22992 CVE-2026-22994 CVE-2026-22997                      CVE-2026-22998 CVE-2026-22999 CVE-2026-23001 CVE-2026-23003                      CVE-2026-23005 CVE-2026-23006 CVE-2026-23010 CVE-2026-23011                      CVE-2026-23019 CVE-2026-23020 CVE-2026-23021 CVE-2026-23025                      CVE-2026-23026 CVE-2026-23030 CVE-2026-23031 CVE-2026-23033                      CVE-2026-23037 CVE-2026-23038 CVE-2026-23047 CVE-2026-23049                      CVE-2026-23054 CVE-2026-23056 CVE-2026-23058 CVE-2026-23060                      CVE-2026-23061 CVE-2026-23063 CVE-2026-23064 CVE-2026-23068                      CVE-2026-23069 CVE-2026-23071 CVE-2026-23073 CVE-2026-23074                      CVE-2026-23075 CVE-2026-23076 CVE-2026-23078 CVE-2026-23080                      CVE-2026-23083 CVE-2026-23084 CVE-2026-23085 CVE-2026-23086                      CVE-2026-23087 CVE-2026-23089 CVE-2026-23090 CVE-2026-23091                      CVE-2026-23093 CVE-2026-23095 CVE-2026-23096 CVE-2026-23097                      CVE-2026-23098 CVE-2026-23099 CVE-2026-23101 CVE-2026-23102                      CVE-2026-23103 CVE-2026-23105 CVE-2026-23107 CVE-2026-23108                      CVE-2026-23110

    Several vulnerabilities have been discovered in the Linux kernel that     may lead to a privilege escalation, denial of service or information     leaks.

    For the oldstable distribution (bookworm), these problems have been fixed     in version 6.1.162-1.

    We recommend that you upgrade your linux packages.

    For the detailed security status of linux please refer to its security     tracker page at:
    https://security-tracker.debian.org/tracker/linux

    Further information about Debian Security Advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://www.debian.org/security/

    Mailing list: debian-security-announce@lists.debian.org

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

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

An update of the linux package has been released.

The remote Oracle Linux 10 / 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-50006 advisory.

    - xfrm: delete x->tunnel as we delete x (Sabrina Dubroca)   {CVE-2025-40215}

Tenable has extracted the preceding description block directly from the Oracle Linux 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.

  - ksm: use range-walk function to jump over holes in scan_get_next_rmap_item Currently,     scan_get_next_rmap_item() walks every page address in a VMA to locate mergeable pages. This becomes highly     inefficient when scanning large virtual memory areas that contain mostly unmapped regions, causing ksmd to     use large amount of cpu without deduplicating much pages. This patch replaces the per-address lookup with     a range walk using walk_page_range(). The range walker allows KSM to skip over entire unmapped holes in a     VMA, avoiding unnecessary lookups. This problem was previously discussed in [1]. Consider the following     test program which creates a 32 TiB mapping in the virtual address space but only populates a single page:
    #include <unistd.h> #include <stdio.h> #include <sys/mman.h> /* 32 TiB */ const size_t size = 32ul * 1024
    * 1024 * 1024 * 1024; int main() { char *area = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_NORESERVE |     MAP_PRIVATE | MAP_ANON, -1, 0); if (area == MAP_FAILED) { perror(mmap() failed\n); return -1; } /*     Populate a single page such that we get an anon_vma. */ *area = 0; /* Enable KSM. */ madvise(area, size,     MADV_MERGEABLE); pause(); return 0; } $ ./ksm-sparse & $ echo 1 > /sys/kernel/mm/ksm/run Without this     patch ksmd uses 100% of the cpu for a long time (more then 1 hour in my test machine) scanning all the 32     TiB virtual address space that contain only one mapped page. This makes ksmd essentially deadlocked not     able to deduplicate anything of value. With this patch ksmd walks only the one mapped page and skips the     rest of the 32 TiB virtual address space, making the scan fast using little cpu. (CVE-2025-68211)

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

ID	Name	Product	Family	Severity
298897	Ubuntu 25.10 : Linux kernel vulnerabilities (USN-8029-1)	Nessus	Ubuntu Local Security Checks	critical
298894	Ubuntu 25.10 : Linux kernel (GCP) vulnerabilities (USN-8030-1)	Nessus	Ubuntu Local Security Checks	critical
298680	Debian dla-4475 : ata-modules-5.10.0-35-armmp-di - security update	Nessus	Debian Local Security Checks	high
298659	Debian dla-4476 : linux-config-6.1 - security update	Nessus	Debian Local Security Checks	high
298404	Debian dsa-6127 : affs-modules-6.1.0-37-4kc-malta-di - security update	Nessus	Debian Local Security Checks	high
297262	Photon OS 5.0: Linux PHSA-2026-5.0-0745	Nessus	PhotonOS Local Security Checks	high
284515	Oracle Linux 10 / 9 : Unbreakable Enterprise kernel (ELSA-2026-50006)	Nessus	Oracle Linux Local Security Checks	high
278915	Linux Distros Unpatched Vulnerability : CVE-2025-68211	Nessus	Misc.	medium

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