In the Linux kernel, the following vulnerability has been resolved: ublk: fix race between io_uring_cmd_complete_in_task and ublk_cancel_cmd ublk_cancel_cmd() calls io_uring_cmd_done() to complete uring_cmd, but we may have scheduled task work via io_uring_cmd_complete_in_task() for dispatching request, then kernel crash can be triggered. Fix it by not trying to canceling the command if ublk block request is started.

The remote Ubuntu 25.04 host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-7721-1 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;

    - PA-RISC architecture;

    - PowerPC architecture;

    - RISC-V architecture;

    - S390 architecture;

    - x86 architecture;

    - Compute Acceleration Framework;

    - Ublk userspace block driver;

    - Bluetooth drivers;

    - Buffer Sharing and Synchronization framework;

    - DMA engine subsystem;

    - ARM SCMI message protocol;

    - GPU drivers;

    - HID subsystem;

    - IIO ADC drivers;

    - IIO subsystem;

    - InfiniBand drivers;

    - Input Device core drivers;

    - IOMMU subsystem;

    - IRQ chip drivers;

    - Multiple devices driver;

    - Network drivers;

    - Mellanox network drivers;

    - PCI subsystem;

    - PHY drivers;

    - PTP clock framework;

    - Voltage and Current Regulator drivers;

    - SPI subsystem;

    - VideoCore services drivers;

    - USB Type-C Connector System Software Interface driver;

    - Xen hypervisor drivers;

    - BTRFS file system;

    - EROFS file system;

    - Network file system (NFS) client;

    - File systems infrastructure;

    - SMB network file system;

    - Network traffic control;

    - eXpress Data Path;

    - Universal MIDI packet (UMP) support module;

    - io_uring subsystem;

    - Kernel command line parsing driver;

    - Scheduler infrastructure;

    - Tracing infrastructure;

    - Memory management;

    - Networking core;

    - IPv4 networking;

    - IPv6 networking;

    - MAC80211 subsystem;

    - Management Component Transport Protocol (MCTP);

    - Netfilter;

    - Open vSwitch;

    - TLS protocol;

    - Wireless networking;

    - AMD SoC Alsa drivers;

    - SoC Audio generic drivers;

    - SOF drivers; (CVE-2025-37959, CVE-2025-37927, CVE-2025-37891, CVE-2025-37906, CVE-2025-37962,     CVE-2025-37972, CVE-2025-37919, CVE-2025-37958, CVE-2025-37929, CVE-2025-37969, CVE-2025-37949,     CVE-2025-37916, CVE-2025-38027, CVE-2025-37968, CVE-2025-37931, CVE-2025-37923, CVE-2025-37918,     CVE-2025-37998, CVE-2025-37907, CVE-2025-37894, CVE-2025-38028, CVE-2025-37915, CVE-2025-38008,     CVE-2025-37946, CVE-2025-38020, CVE-2025-37926, CVE-2025-37950, CVE-2025-38216, CVE-2025-37973,     CVE-2025-38014, CVE-2025-37963, CVE-2025-38009, CVE-2025-38010, CVE-2025-37971, CVE-2025-38012,     CVE-2025-38094, CVE-2025-37955, CVE-2025-37904, CVE-2025-38095, CVE-2025-37951, CVE-2025-37964,     CVE-2025-37901, CVE-2025-37956, CVE-2025-38016, CVE-2025-37960, CVE-2025-37898, CVE-2025-37992,     CVE-2025-38006, CVE-2025-37993, CVE-2025-37921, CVE-2025-38007, CVE-2025-37930, CVE-2025-37895,     CVE-2025-37897, CVE-2025-37933, CVE-2025-37899, CVE-2025-37967, CVE-2025-38019, CVE-2025-37966,     CVE-2025-37961, CVE-2025-37934, CVE-2025-37952, CVE-2025-37994, CVE-2025-37914, CVE-2025-38083,     CVE-2025-37970, CVE-2025-37965, CVE-2025-38025, CVE-2025-38023, CVE-2025-38015, CVE-2025-37911,     CVE-2025-38056, CVE-2025-37995, CVE-2025-37991, CVE-2025-37920, CVE-2025-38011, CVE-2025-37910,     CVE-2025-37924, CVE-2025-37996, CVE-2025-37948, CVE-2025-37922, CVE-2025-37947, CVE-2025-37912,     CVE-2025-37990, CVE-2025-37909, CVE-2025-38021, CVE-2025-38022, CVE-2025-37908, CVE-2025-37900,     CVE-2025-37999, CVE-2025-37905, CVE-2025-37954, CVE-2025-37974, CVE-2025-38005, CVE-2025-37913,     CVE-2025-37903, CVE-2025-37896, CVE-2025-38002, CVE-2025-37935, CVE-2025-38018, CVE-2025-37936,     CVE-2025-38013, CVE-2025-37957, CVE-2025-37928, CVE-2025-37917, CVE-2025-38024)

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.

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2025-1145 advisory.

    In the Linux kernel, the following vulnerability has been resolved:

    btrfs: fix block group refcount race in btrfs_create_pending_block_groups() (CVE-2025-22115)

    In the Linux kernel, the following vulnerability has been resolved:

    ublk: fix race between io_uring_cmd_complete_in_task and ublk_cancel_cmd (CVE-2025-37906)

    In the Linux kernel, the following vulnerability has been resolved:

    crypto: ecdsa - Harden against integer overflows in DIV_ROUND_UP() (CVE-2025-37984)

    In the Linux kernel, the following vulnerability has been resolved:

    rseq: Fix segfault on registration when rseq_cs is non-zero (CVE-2025-38067)

    In the Linux kernel, the following vulnerability has been resolved:

    bridge: mcast: Fix use-after-free during router port configuration (CVE-2025-38248)

    In the Linux kernel, the following vulnerability has been resolved:

    fs/fhandle.c: fix a race in call of has_locked_children() (CVE-2025-38306)

    In the Linux kernel, the following vulnerability has been resolved:

    eventpoll: don't decrement ep refcount while still holding the ep mutex (CVE-2025-38349)

Tenable has extracted the preceding description block directly from the tested product 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.

  - ublk: fix race between io_uring_cmd_complete_in_task and ublk_cancel_cmd ublk_cancel_cmd() calls     io_uring_cmd_done() to complete uring_cmd, but we may have scheduled task work via     io_uring_cmd_complete_in_task() for dispatching request, then kernel crash can be triggered. Fix it by not     trying to canceling the command if ublk block request is started. (CVE-2025-37906)

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

The remote Ubuntu 25.04 host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-7665-1 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;

    - PA-RISC architecture;

    - PowerPC architecture;

    - S390 architecture;

    - x86 architecture;

    - Compute Acceleration Framework;

    - Ublk userspace block driver;

    - Bluetooth drivers;

    - ARM SCMI message protocol;

    - GPU drivers;

    - IOMMU subsystem;

    - IRQ chip drivers;

    - Multiple devices driver;

    - Network drivers;

    - PCI subsystem;

    - PTP clock framework;

    - SPI subsystem;

    - BTRFS file system;

    - SMB network file system;

    - eXpress Data Path;

    - Universal MIDI packet (UMP) support module;

    - Tracing infrastructure;

    - Memory management;

    - IPv4 networking;

    - IPv6 networking;

    - Network traffic control;

    - AMD SoC Alsa drivers;

    - SoC Audio generic drivers; (CVE-2025-37901, CVE-2025-37990, CVE-2025-37891, CVE-2025-37918,     CVE-2025-37930, CVE-2025-37909, CVE-2025-37906, CVE-2025-37913, CVE-2025-37927, CVE-2025-37922,     CVE-2025-37899, CVE-2025-37894, CVE-2025-37934, CVE-2025-37911, CVE-2025-37912, CVE-2025-37933,     CVE-2025-37924, CVE-2025-37900, CVE-2025-37907, CVE-2025-37974, CVE-2025-37928, CVE-2025-37914,     CVE-2025-37905, CVE-2025-37921, CVE-2025-37919, CVE-2025-37915, CVE-2025-37910, CVE-2025-37903,     CVE-2025-37936, CVE-2025-37904, CVE-2025-38216, CVE-2025-37923, CVE-2025-37931, CVE-2025-37895,     CVE-2025-37917, CVE-2025-37926, CVE-2025-37916, CVE-2025-37935, CVE-2025-37898, CVE-2025-37897,     CVE-2025-37929, CVE-2025-37908, CVE-2025-37946, CVE-2025-37896, CVE-2025-37920, CVE-2025-37991)

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 24.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-7650-1 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;

    - PA-RISC architecture;

    - PowerPC architecture;

    - S390 architecture;

    - x86 architecture;

    - Compute Acceleration Framework;

    - Ublk userspace block driver;

    - ARM SCMI message protocol;

    - GPU drivers;

    - IOMMU subsystem;

    - IRQ chip drivers;

    - Multiple devices driver;

    - Network drivers;

    - PCI subsystem;

    - PTP clock framework;

    - SPI subsystem;

    - BTRFS file system;

    - SMB network file system;

    - eXpress Data Path;

    - Universal MIDI packet (UMP) support module;

    - Tracing infrastructure;

    - Memory management;

    - IPv4 networking;

    - IPv6 networking;

    - Network traffic control;

    - AMD SoC Alsa drivers;

    - SoC Audio generic drivers; (CVE-2025-37899, CVE-2025-37905, CVE-2025-37916, CVE-2025-37935,     CVE-2025-37923, CVE-2025-37906, CVE-2025-37929, CVE-2025-37907, CVE-2025-37909, CVE-2025-37910,     CVE-2025-37921, CVE-2025-37927, CVE-2025-38216, CVE-2025-37914, CVE-2025-37928, CVE-2025-37915,     CVE-2025-37990, CVE-2025-37917, CVE-2025-37936, CVE-2025-37946, CVE-2025-37934, CVE-2025-37894,     CVE-2025-37898, CVE-2025-37911, CVE-2025-37912, CVE-2025-37920, CVE-2025-37926, CVE-2025-37919,     CVE-2025-37900, CVE-2025-37908, CVE-2025-37924, CVE-2025-37974, CVE-2025-37901, CVE-2025-37903,     CVE-2025-37891, CVE-2025-37922, CVE-2025-37991, CVE-2025-37930, CVE-2025-37896, CVE-2025-37897,     CVE-2025-37913, CVE-2025-37895, CVE-2025-37933, CVE-2025-37904, CVE-2025-37931)

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 25.04 host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-7649-1 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;

    - PA-RISC architecture;

    - PowerPC architecture;

    - S390 architecture;

    - x86 architecture;

    - Compute Acceleration Framework;

    - Ublk userspace block driver;

    - Bluetooth drivers;

    - ARM SCMI message protocol;

    - GPU drivers;

    - IOMMU subsystem;

    - IRQ chip drivers;

    - Multiple devices driver;

    - Network drivers;

    - PCI subsystem;

    - PTP clock framework;

    - SPI subsystem;

    - BTRFS file system;

    - SMB network file system;

    - eXpress Data Path;

    - Universal MIDI packet (UMP) support module;

    - Tracing infrastructure;

    - Memory management;

    - IPv4 networking;

    - IPv6 networking;

    - Network traffic control;

    - AMD SoC Alsa drivers;

    - SoC Audio generic drivers; (CVE-2025-37898, CVE-2025-37990, CVE-2025-37974, CVE-2025-37991,     CVE-2025-37894, CVE-2025-37906, CVE-2025-37896, CVE-2025-37909, CVE-2025-37923, CVE-2025-37899,     CVE-2025-37901, CVE-2025-37914, CVE-2025-38216, CVE-2025-37931, CVE-2025-37928, CVE-2025-37916,     CVE-2025-37908, CVE-2025-37915, CVE-2025-37917, CVE-2025-37921, CVE-2025-37903, CVE-2025-37922,     CVE-2025-37895, CVE-2025-37936, CVE-2025-37933, CVE-2025-37891, CVE-2025-37926, CVE-2025-37912,     CVE-2025-37920, CVE-2025-37924, CVE-2025-37927, CVE-2025-37946, CVE-2025-37907, CVE-2025-37930,     CVE-2025-37911, CVE-2025-37905, CVE-2025-37900, CVE-2025-37929, CVE-2025-37910, CVE-2025-37913,     CVE-2025-37935, CVE-2025-37919, CVE-2025-37918, CVE-2025-37897, CVE-2025-37904, CVE-2025-37934)

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.

ID	Name	Product	Family	Severity
258130	Ubuntu 25.04 : Linux kernel (Azure) vulnerabilities (USN-7721-1)	Nessus	Ubuntu Local Security Checks	high
246922	Amazon Linux 2023 : bpftool6.12, kernel6.12, kernel6.12-devel (ALAS2023-2025-1145)	Nessus	Amazon Linux Local Security Checks	high
244957	Linux Distros Unpatched Vulnerability : CVE-2025-37906	Nessus	Misc.	medium
242587	Ubuntu 25.04 : Linux kernel (Oracle) vulnerabilities (USN-7665-1)	Nessus	Ubuntu Local Security Checks	medium
242283	Ubuntu 24.04 LTS : Linux kernel (OEM) vulnerabilities (USN-7650-1)	Nessus	Ubuntu Local Security Checks	medium
242280	Ubuntu 25.04 : Linux kernel vulnerabilities (USN-7649-1)	Nessus	Ubuntu Local Security Checks	medium

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CVE-2025-37906

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