In the Linux kernel, the following vulnerability has been resolved: usb: gadget: f_fs: Fix Use-After-Free in AIO error path In ffs_epfile_write_iter() and ffs_epfile_read_iter(), when ffs_epfile_io() fails with an error other than -EIOCBQUEUED, the io_data structure (`p`) is freed. However, for AIO operations, the kiocb cancel function was already armed and kiocb->private was set to `p`. If a concurrent cancel operation (such as sys_io_cancel()) executes after ffs_epfile_io() fails but before the function frees `p`, a Use-After-Free can occur when the cancellation handler accesses the freed pointer. To securely fix this race condition, we must properly un-arm the cancellation. Invoking `kiocb->ki_complete()` does exactly this by acquiring `ctx->ctx_lock` and safely removing the kiocb from the active sequence. In doing so, it ensures that a parallel io_cancel can no longer discover the kiocb, effectively closing the race window. We then return -EIOCBQUEUED to notify the VFS layer that the kiocb has been consumed and it should avoid attempting to complete the request again or triggering subsequent completion handlers.

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-151086 advisory.

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

    usb: gadget: f_fs: Fix Use-After-Free in AIO error path

    In ffs_epfile_write_iter() and ffs_epfile_read_iter(), when ffs_epfile_io()     fails with an error other than -EIOCBQUEUED, the io_data structure (`p`) is     freed. However, for AIO operations, the kiocb cancel function was already     armed and kiocb->private was set to `p`.

    If a concurrent cancel operation (such as sys_io_cancel()) executes after     ffs_epfile_io() fails but before the function frees `p`, a Use-After-Free     can occur when the cancellation handler accesses the freed pointer.

    To securely fix this race condition, we must properly un-arm the     cancellation. Invoking `kiocb->ki_complete()` does exactly this by     acquiring `ctx->ctx_lock` and safely removing the kiocb from the active     sequence. In doing so, it ensures that a parallel io_cancel can no longer     discover the kiocb, effectively closing the race window.

    We then return -EIOCBQUEUED to notify the VFS layer that the kiocb has been     consumed and it should avoid attempting to complete the request again or     triggering subsequent completion handlers.

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

Note that Nessus has not tested for this issue 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-9002-1 advisory.

    It was discovered that the io_uring subsystem in the Linux kernel did not properly handle canceled task     work when processing certain wait operations, leading to the operation being performed in the wrong task     context. A local attacker could possibly use this to cause a denial of service (system crash).
    (CVE-2026-81010)

    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:

    - ARM32 architecture;

    - ARM64 architecture;

    - MIPS architecture;

    - OpenRISC architecture;

    - PowerPC architecture;

    - RISC-V architecture;

    - S390 architecture;

    - x86 architecture;

    - Intel NPU Driver;

    - ACPI drivers;

    - Serial ATA and Parallel ATA drivers;

    - Auxiliary display drivers;

    - Ublk userspace block driver;

    - Bluetooth drivers;

    - Character device driver;

    - CPU idle management framework;

    - Hardware crypto device drivers;

    - CXL (Compute Express Link) drivers;

    - ARM SCMI message protocol;

    - GPIO subsystem;

    - GPU drivers;

    - HID subsystem;

    - HSI subsystem;

    - Hardware monitoring drivers;

    - I2C subsystem;

    - I3C subsystem;

    - IIO subsystem;

    - InfiniBand drivers;

    - Input Device core drivers;

    - On-Chip Interconnect management framework;

    - IOMMU subsystem;

    - Multiple devices driver;

    - Media drivers;

    - Fastrpc Driver;

    - Amazon Nitro Secure Module driver;

    - MMC subsystem;

    - MTD block device drivers;

    - Ethernet bonding driver;

    - Network drivers;

    - Microsoft Azure Network Adapter (MANA) driver;

    - Texas Instruments network drivers;

    - MediaTek network drivers;

    - NTB driver;

    - NVDIMM (Non-Volatile Memory Device) drivers;

    - NVME drivers;

    - NVMEM (Non Volatile Memory) drivers;

    - PCI subsystem;

    - Chrome hardware platform drivers;

    - x86 platform drivers;

    - Power supply drivers;

    - RapidIO drivers;

    - Voltage and Current Regulator drivers;

    - S/390 drivers;

    - SCSI subsystem;

    - SLIMbus drivers;

    - NVIDIA Tegra SoC drivers;

    - Realtek RTL8723BS SDIO drivers;

    - TCM subsystem;

    - Trusted Execution Environment drivers;

    - Thunderbolt and USB4 drivers;

    - TTY drivers;

    - USB Device Class drivers;

    - Faraday FOTG210 USB2 dual-role controller driver;

    - USB Gadget drivers;

    - USB Host Controller drivers;

    - Siemens ID Mouse USB driver;

    - IOWarrior USB driver;

    - LD Didactic USB driver;

    - LEGO USB Tower driver;

    - USB Serial drivers;

    - USB Type-C support driver;

    - USB Type-C Port Controller Manager driver;

    - USB Type-C Connector System Software Interface driver;

    - USB over IP driver;

    - VFIO drivers;

    - Framebuffer layer;

    - W1 Dallas's 1-wire bus driver;

    - AFS file system;

    - BTRFS file system;

    - Ceph distributed file system;

    - eCrypt file system;

    - File systems infrastructure;

    - Ext4 file system;

    - F2FS file system;

    - FUSE (File system in Userspace);

    - Network file system (NFS) server daemon;

    - NILFS2 file system;

    - NTFS3 file system;

    - OCFS2 file system;

    - OrangeFS file system;

    - SMB network file system;

    - UBI file system;

    - Drivers core;

    - Tracing infrastructure;

    - KProbes tracing;

    - Networking core;

    - Netfilter;

    - Sun RPC protocol;

    - IPv6 networking;

    - Bluetooth subsystem;

    - IPv4 networking;

    - IP tunnels definitions;

    - SCTP protocol;

    - User-space API (UAPI);

    - IPC subsystem;

    - Audit subsystem;

    - BPF subsystem;

    - DMA mapping infrastructure;

    - Kernel futex primitives;

    - Scheduler infrastructure;

    - Signal handling mechanism;

    - Memory management;

    - 6LoWPAN network protocol;

    - IEEE 802 network protocols;

    - B.A.T.M.A.N. meshing protocol;

    - Ethernet bridge;

    - CAN network layer;

    - Ceph Core library;

    - Devlink API;

    - HSR network protocol;

    - IEEE802154.4 network protocol;

    - IUCV driver;

    - MAC80211 subsystem;

    - Management Component Transport Protocol (MCTP);

    - MultiProtocol Label Switching driver;

    - Multipath TCP;

    - NetLabel subsystem;

    - Open vSwitch;

    - Packet sockets;

    - RDS protocol;

    - Network traffic control;

    - SMC sockets;

    - Network sockets;

    - VMware vSockets driver;

    - XFRM subsystem;

    - AppArmor security module;

    - Key management;

    - Landlock security;

    - Simplified Mandatory Access Control Kernel framework;

    - ALSA framework;

    - Digigram PCXHR ALSA driver;

    - Wolfson Microelectronics audio codecs;

    - USB sound devices;

    - KVM subsystem; (CVE-2024-40954, CVE-2025-38261, CVE-2025-68296, CVE-2025-68730, CVE-2025-68768,     CVE-2026-23346, CVE-2026-43219, CVE-2026-43240, CVE-2026-43311, CVE-2026-43331, CVE-2026-45930,     CVE-2026-52913, CVE-2026-52930, CVE-2026-52939, CVE-2026-52944, CVE-2026-52948, CVE-2026-52953,     CVE-2026-53080, CVE-2026-53134, CVE-2026-53135, CVE-2026-53140, CVE-2026-53144, CVE-2026-53150,     CVE-2026-53154, CVE-2026-53158, CVE-2026-53168, CVE-2026-53177, CVE-2026-53178, CVE-2026-53179,     CVE-2026-53181, CVE-2026-53190, CVE-2026-53208, CVE-2026-53210, CVE-2026-53213, CVE-2026-53214,     CVE-2026-53218, CVE-2026-53219, CVE-2026-53220, CVE-2026-53227, CVE-2026-53236, CVE-2026-53237,     CVE-2026-53238, CVE-2026-53242, CVE-2026-53245, CVE-2026-53249, CVE-2026-53251, CVE-2026-53252,     CVE-2026-53261, CVE-2026-53263, CVE-2026-53265, CVE-2026-53274, CVE-2026-53331, CVE-2026-53332,     CVE-2026-53336, CVE-2026-53337, CVE-2026-53339, CVE-2026-53343, CVE-2026-53345, CVE-2026-53347,     CVE-2026-53349, CVE-2026-53350, CVE-2026-53352, CVE-2026-53353, CVE-2026-63868, CVE-2026-63871,     CVE-2026-63876, CVE-2026-63877, CVE-2026-63882, CVE-2026-63883, CVE-2026-63890, CVE-2026-63891,     CVE-2026-63892, CVE-2026-63895, CVE-2026-63896, CVE-2026-63897, CVE-2026-63898, CVE-2026-63899,     CVE-2026-63900, CVE-2026-63901, CVE-2026-63902, CVE-2026-63903, CVE-2026-63904, CVE-2026-63905,     CVE-2026-63908, CVE-2026-63928, CVE-2026-63931, CVE-2026-63933, CVE-2026-63934, CVE-2026-63943,     CVE-2026-63949, CVE-2026-63956, CVE-2026-63957, CVE-2026-63958, CVE-2026-63959, CVE-2026-63960,     CVE-2026-63961, CVE-2026-63964, CVE-2026-63967, CVE-2026-63969, CVE-2026-63973, CVE-2026-63990,     CVE-2026-63991, CVE-2026-64001, CVE-2026-64006, CVE-2026-64012, CVE-2026-64014, CVE-2026-64078,     CVE-2026-64090, CVE-2026-64094, CVE-2026-64131, CVE-2026-64233, CVE-2026-64234, CVE-2026-64240,     CVE-2026-64305, CVE-2026-64329, CVE-2026-64330, CVE-2026-64340, CVE-2026-64341, CVE-2026-64342,     CVE-2026-64343, CVE-2026-64344, CVE-2026-64346, CVE-2026-64348, CVE-2026-64352, CVE-2026-64362,     CVE-2026-64363, CVE-2026-64365, CVE-2026-64407, CVE-2026-64421, CVE-2026-64424, CVE-2026-64433,     CVE-2026-64446, CVE-2026-64525, CVE-2026-64527, CVE-2026-64528, CVE-2026-74506, CVE-2026-80590,     CVE-2026-80591, CVE-2026-80593, CVE-2026-80598, CVE-2026-80599, CVE-2026-80600, CVE-2026-80601,     CVE-2026-80603, CVE-2026-80609, CVE-2026-80613, CVE-2026-80619, CVE-2026-80622, CVE-2026-80628,     CVE-2026-80630, CVE-2026-80631, CVE-2026-80634, CVE-2026-80635, CVE-2026-80637, CVE-2026-80644,     CVE-2026-80645, CVE-2026-80646, CVE-2026-80649, CVE-2026-80653, CVE-2026-80662, CVE-2026-80663,     CVE-2026-80664, CVE-2026-80668, CVE-2026-80677, CVE-2026-80678, CVE-2026-80680, CVE-2026-80681,     CVE-2026-80684, CVE-2026-80691, CVE-2026-80692, CVE-2026-80693, CVE-2026-80694, CVE-2026-80700,     CVE-2026-80702, CVE-2026-80706, CVE-2026-80707, CVE-2026-80709, CVE-2026-80710, CVE-2026-80714,     CVE-2026-80716, CVE-2026-80717, CVE-2026-80718, CVE-2026-80722, CVE-2026-80725, CVE-2026-80731,     CVE-2026-80732, CVE-2026-80737, CVE-2026-80738, CVE-2026-80747, CVE-2026-80752, CVE-2026-80754,     CVE-2026-80840, CVE-2026-80928, CVE-2026-80931, CVE-2026-80932, CVE-2026-80933, CVE-2026-80935,     CVE-2026-80937, CVE-2026-80944, CVE-2026-80945, CVE-2026-80947, CVE-2026-80952, CVE-2026-80967,     CVE-2026-80971, CVE-2026-80976, CVE-2026-80977, CVE-2026-80978, CVE-2026-80980, CVE-2026-80982,     CVE-2026-80987, CVE-2026-80989, CVE-2026-80990, CVE-2026-80991, CVE-2026-80992, CVE-2026-80994,     CVE-2026-81000, CVE-2026-81001, CVE-2026-81002, CVE-2026-81003, CVE-2026-81007, CVE-2026-81008,     CVE-2026-81011, CVE-2026-81012, CVE-2026-81016, CVE-2026-81017, CVE-2026-89440, CVE-2026-89441,     CVE-2026-89442, CVE-2026-89443, CVE-2026-89448, CVE-2026-89452, CVE-2026-89456, CVE-2026-89465,     CVE-2026-89466, CVE-2026-89469, CVE-2026-89470, CVE-2026-89471, CVE-2026-89472, CVE-2026-89476,     CVE-2026-89477, CVE-2026-89478, CVE-2026-89479, CVE-2026-89480, CVE-2026-89481, CVE-2026-89482,     CVE-2026-89483, CVE-2026-89485, CVE-2026-89487, CVE-2026-89488, CVE-2026-89489, CVE-2026-89492,     CVE-2026-89493, CVE-2026-89494, CVE-2026-89495, CVE-2026-89497, CVE-2026-89500, CVE-2026-89501,     CVE-2026-89502, CVE-2026-89503, CVE-2026-89504, CVE-2026-89508, CVE-2026-89510, CVE-2026-89511,     CVE-2026-89520, CVE-2026-89524, CVE-2026-89526, CVE-2026-89528, CVE-2026-89530, CVE-2026-89532,     CVE-2026-89533, CVE-2026-89536, CVE-2026-89537, CVE-2026-89538, CVE-2026-89540, CVE-2026-89541,     CVE-2026-89542, CVE-2026-89544, CVE-2026-89545, CVE-2026-89547, CVE-2026-89548, CVE-2026-89549,     CVE-2026-89550, CVE-2026-89551, CVE-2026-89553, CVE-2026-89554, CVE-2026-89555, CVE-2026-89557,     CVE-2026-89559, CVE-2026-89560, CVE-2026-89561, CVE-2026-89562, CVE-2026-89563, CVE-2026-89564,     CVE-2026-89569, CVE-2026-89573, CVE-2026-89574, CVE-2026-89579, CVE-2026-89580, CVE-2026-89583,     CVE-2026-89585, CVE-2026-89586, CVE-2026-89587, CVE-2026-89594, CVE-2026-89596, CVE-2026-89597,     CVE-2026-89599, CVE-2026-89601, CVE-2026-89605, CVE-2026-89606, CVE-2026-89607, CVE-2026-89608,     CVE-2026-89609, CVE-2026-89615, CVE-2026-89616, CVE-2026-89617, CVE-2026-89622, CVE-2026-89626,     CVE-2026-89631, CVE-2026-89633, CVE-2026-89634, CVE-2026-89636, CVE-2026-89637, CVE-2026-89638,     CVE-2026-89640, CVE-2026-89643, CVE-2026-89647, CVE-2026-89648, CVE-2026-89649, CVE-2026-89650,     CVE-2026-89652, CVE-2026-89653, CVE-2026-89654, CVE-2026-89655, CVE-2026-89656, CVE-2026-89657,     CVE-2026-89659, CVE-2026-89662, CVE-2026-89663, CVE-2026-89665, CVE-2026-89669, CVE-2026-89671,     CVE-2026-89672, CVE-2026-89674, CVE-2026-89676, CVE-2026-89680, CVE-2026-89682, CVE-2026-89684,     CVE-2026-89685, CVE-2026-89686, CVE-2026-89690, CVE-2026-89691, CVE-2026-89694, CVE-2026-89696,     CVE-2026-89697, CVE-2026-89699, CVE-2026-89702, CVE-2026-89704, CVE-2026-89705, CVE-2026-89706,     CVE-2026-89707, CVE-2026-89708, CVE-2026-89709, CVE-2026-89711, CVE-2026-89712, CVE-2026-89713,     CVE-2026-89720, CVE-2026-89723, CVE-2026-89724, CVE-2026-89725, CVE-2026-89729, CVE-2026-89731,     CVE-2026-89733, CVE-2026-89736, CVE-2026-89738, CVE-2026-89742, CVE-2026-89743, CVE-2026-89747,     CVE-2026-89750, CVE-2026-89755, CVE-2026-89761, CVE-2026-89762, CVE-2026-89763, CVE-2026-89774,     CVE-2026-89777, CVE-2026-89778, CVE-2026-89779, CVE-2026-89781, CVE-2026-89782, CVE-2026-89783,     CVE-2026-89786, CVE-2026-89788, CVE-2026-89789, CVE-2026-89792, CVE-2026-89793, CVE-2026-89795,     CVE-2026-89799, CVE-2026-89801, CVE-2026-89803, CVE-2026-89806, CVE-2026-89808, CVE-2026-89810,     CVE-2026-89811, CVE-2026-89819, CVE-2026-89823, CVE-2026-89832, CVE-2026-89838, CVE-2026-89840,     CVE-2026-89844, CVE-2026-89846, CVE-2026-89847, CVE-2026-89848, CVE-2026-89849, CVE-2026-89854,     CVE-2026-89856, CVE-2026-89857, CVE-2026-89860, CVE-2026-89861, CVE-2026-89863, CVE-2026-89870,     CVE-2026-89877, CVE-2026-89880, CVE-2026-89883, CVE-2026-89887, CVE-2026-89888, CVE-2026-89890,     CVE-2026-89893, CVE-2026-89894, CVE-2026-89897, CVE-2026-89899, CVE-2026-89902, CVE-2026-89903,     CVE-2026-89908, CVE-2026-89912, CVE-2026-89920, CVE-2026-89922, CVE-2026-89927, CVE-2026-89929,     CVE-2026-89930, CVE-2026-89932, CVE-2026-89938, CVE-2026-89951, CVE-2026-89954, CVE-2026-89957,     CVE-2026-89959, CVE-2026-89960, CVE-2026-89961, CVE-2026-89965, CVE-2026-89968, CVE-2026-89969,     CVE-2026-89970, CVE-2026-89972, CVE-2026-89973, CVE-2026-89979, CVE-2026-89988, CVE-2026-89992,     CVE-2026-89995, CVE-2026-89997, CVE-2026-89998, CVE-2026-89999, CVE-2026-90000, CVE-2026-90002,     CVE-2026-90003, CVE-2026-90007, CVE-2026-90011, CVE-2026-90013, CVE-2026-90016, CVE-2026-90017,     CVE-2026-90018, CVE-2026-90022, CVE-2026-90025, CVE-2026-90026, CVE-2026-90027, CVE-2026-90032,     CVE-2026-90036, CVE-2026-90037, CVE-2026-90041, CVE-2026-90042, CVE-2026-90044, CVE-2026-90045,     CVE-2026-90048, CVE-2026-90049, CVE-2026-90170, CVE-2026-92502, CVE-2026-93221)

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.

An update of the linux package has been released.

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-146669 advisory.

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

    usb: gadget: f_fs: Fix Use-After-Free in AIO error path

    In ffs_epfile_write_iter() and ffs_epfile_read_iter(), when ffs_epfile_io()     fails with an error other than -EIOCBQUEUED, the io_data structure (`p`) is     freed. However, for AIO operations, the kiocb cancel function was already     armed and kiocb->private was set to `p`.

    If a concurrent cancel operation (such as sys_io_cancel()) executes after     ffs_epfile_io() fails but before the function frees `p`, a Use-After-Free     can occur when the cancellation handler accesses the freed pointer.

    To securely fix this race condition, we must properly un-arm the     cancellation. Invoking `kiocb->ki_complete()` does exactly this by     acquiring `ctx->ctx_lock` and safely removing the kiocb from the active     sequence. In doing so, it ensures that a parallel io_cancel can no longer     discover the kiocb, effectively closing the race window.

    We then return -EIOCBQUEUED to notify the VFS layer that the kiocb has been     consumed and it should avoid attempting to complete the request again or     triggering subsequent completion handlers.

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

Note that Nessus has not tested for this issue 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.

  - usb: gadget: f_fs: Fix Use-After-Free in AIO error path In ffs_epfile_write_iter() and     ffs_epfile_read_iter(), when ffs_epfile_io() fails with an error other than -EIOCBQUEUED, the io_data     structure (`p`) is freed. However, for AIO operations, the kiocb cancel function was already armed and     kiocb->private was set to `p`. If a concurrent cancel operation (such as sys_io_cancel()) executes after     ffs_epfile_io() fails but before the function frees `p`, a Use-After-Free can occur when the cancellation     handler accesses the freed pointer. To securely fix this race condition, we must properly un-arm the     cancellation. Invoking `kiocb->ki_complete()` does exactly this by acquiring `ctx->ctx_lock` and safely     removing the kiocb from the active sequence. In doing so, it ensures that a parallel io_cancel can no     longer discover the kiocb, effectively closing the race window. We then return -EIOCBQUEUED to notify the     VFS layer that the kiocb has been consumed and it should avoid attempting to complete the request again or     triggering subsequent completion handlers. (CVE-2026-90044)

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

ID	Name	Product	Family	Type	Severity
378298	Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-151086)	Nessus	Unity Linux Local Security Checks	Local	high
377600	Ubuntu 24.04 LTS : Linux kernel (NVIDIA Tegra) vulnerabilities (USN-9002-1)	Nessus	Ubuntu Local Security Checks	Local	high
376443	Ubuntu 24.04 LTS / 26.04 LTS : Linux kernel vulnerabilities (USN-8959-1)	Nessus	Ubuntu Local Security Checks	Local	high
376285	SUSE SLED15: cluster-md-kmp-default / dlm-kmp-default / gfs2-kmp-default / etc (SUSE-SU-2026:5091-1)	Nessus	SuSE Local Security Checks	Local	critical
375113	Photon OS 5.0: Linux PHSA-2026-5.0-91-1014	Nessus	PhotonOS Local Security Checks	Local	high
375014	Photon OS 5.0: Linux PHSA-2026-5.0-92-1014	Nessus	PhotonOS Local Security Checks	Local	high
373085	Unity Linux 20.1050a Security Update: kernel (UTSA-2026-146669)	Nessus	Unity Linux Local Security Checks	Local	high
362907	Debian dla-4817 : ata-modules-6.12.107+deb12-armmp-di - security update	Nessus	Debian Local Security Checks	Local	high
351155	Debian dsa-6528 : ata-modules-6.12.111+deb13-armmp-di - security update	Nessus	Debian Local Security Checks	Local	high
346704	Linux Distros Unpatched Vulnerability : CVE-2026-90044	Nessus	Misc.	Local	high

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CVE-2026-90044

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Tenable Plugins

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