In the Linux kernel, the following vulnerability has been resolved: USB: dummy-hcd: Fix interrupt synchronization error This fixes an error in synchronization in the dummy-hcd driver. The error has a somewhat involved history. The synchronization mechanism was introduced by commit 7dbd8f4cabd9 ("USB: dummy-hcd: Fix erroneous synchronization change"), which added an emulated "interrupts enabled" flag together with code emulating synchronize_irq() (it waits until all current handler callbacks have returned). But the emulated interrupt-disable occurred too late, after the driver containing the handler callback routines had been told that it was unbound and no more callbacks would occur. Commit 4a5d797a9f9c ("usb: gadget: dummy_hcd: fix gpf in gadget_setup") tried to fix this by moving the synchronize_irq() emulation code from dummy_stop() to dummy_pullup(), which runs before the unbind callback. There still were races, though, because the emulated interrupt-disable still occurred too late. It couldn't be moved to dummy_pullup(), because that routine can be called for reasons other than an impending unbind. Therefore commits 7dc0c55e9f30 ("USB: UDC core: Add udc_async_callbacks gadget op") and 04145a03db9d ("USB: UDC: Implement udc_async_callbacks in dummy-hcd") added an API allowing the UDC core to tell dummy-hcd exactly when emulated interrupts and their callbacks should be disabled. That brings us to the current state of things, which is still wrong because the emulated synchronize_irq() occurs before the emulated interrupt-disable! That's no good, beause it means that more emulated interrupts can occur after the synchronize_irq() emulation has run, leading to the possibility that a callback handler may be running when the gadget driver is unbound. To fix this, we have to move the synchronize_irq() emulation code yet again, to the dummy_udc_async_callbacks() routine, which takes care of enabling and disabling emulated interrupt requests. The synchronization will now run immediately after emulated interrupts are disabled, which is where it belongs.

The remote Ubuntu 20.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-8668-1 advisory.

    Maxim Suhanov discovered that the NTFS file system implementation in the Linux kernel did not properly     validate file name length in certain situations, leading to an out-of-bounds read. An attacker could use     this to construct a malicious NTFS image that, when mounted and operated on, could expose sensitive     information (kernel memory). (CVE-2023-45896)

    It was discovered that some AMD processors did not properly clear data in the floating point divider unit     during speculative execution. A local attacker could use this to expose sensitive information.
    (CVE-2025-54505)

    It was discovered that some AMD Zen 2 processors did not properly isolate shared resources in the     operation cache. A local attacker could possibly use this issue to corrupt instructions executed at a     higher privilege level, resulting in privilege escalation. (CVE-2025-54518)

    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;

    - PowerPC architecture;

    - S390 architecture;

    - x86 architecture;

    - Block layer subsystem;

    - Cryptographic API;

    - ACPI drivers;

    - ATM drivers;

    - Drivers core;

    - Power management core;

    - DRBD Distributed Replicated Block Device drivers;

    - RNBD block device driver;

    - Bluetooth drivers;

    - Bus devices;

    - Character device driver;

    - TPM device driver;

    - Clocksource drivers;

    - Data acquisition framework and drivers;

    - CPU frequency scaling framework;

    - CPU idle management framework;

    - Hardware crypto device drivers;

    - DMA engine subsystem;

    - Arm Firmware Framework for ARMv8-A(FFA);

    - EFI core;

    - GPIO subsystem;

    - GPU drivers;

    - HID subsystem;

    - Hardware monitoring drivers;

    - I2C subsystem;

    - IIO subsystem;

    - IIO ADC drivers;

    - InfiniBand drivers;

    - Input Device (Miscellaneous) drivers;

    - IOMMU subsystem;

    - Mailbox framework;

    - Multiple devices driver;

    - Media drivers;

    - MediaTek SMI driver;

    - NVIDIA Tegra memory controller driver;

    - Multifunction device drivers;

    - IBM Advanced System Management driver;

    - MMC subsystem;

    - MTD block device drivers;

    - Network drivers;

    - Ethernet bonding driver;

    - Mellanox network drivers;

    - Microsoft Azure Network Adapter (MANA) driver;

    - STMicroelectronics network drivers;

    - MediaTek network drivers;

    - Near Field Communication (NFC) drivers;

    - NTB driver;

    - NVDIMM (Non-Volatile Memory Device) drivers;

    - NVME drivers;

    - PCI subsystem;

    - Pin controllers subsystem;

    - x86 platform drivers;

    - Broadcom BCM2835 power domain driver;

    - Power supply drivers;

    - RapidIO drivers;

    - Remote Processor subsystem;

    - RPMSG subsystem;

    - SCSI subsystem;

    - Freescale SoC drivers;

    - Texas Instruments SoC drivers;

    - SPI subsystem;

    - Greybus lights staging drivers;

    - Media staging drivers;

    - Realtek RTL8723BS SDIO drivers;

    - SM750 framebuffer staging driver;

    - TCM subsystem;

    - TTY drivers;

    - UFS subsystem;

    - Cadence USB3 driver;

    - USB Device Class drivers;

    - ULPI bus;

    - USB core drivers;

    - DesignWare USB2 driver;

    - USB Gadget drivers;

    - USB Host Controller drivers;

    - Mustek MDC800 USB digital camera driver;

    - USB YUREX driver;

    - Renesas USBHS Controller drivers;

    - Framebuffer layer;

    - Xen hypervisor drivers;

    - File systems infrastructure;

    - BTRFS file system;

    - Ceph distributed file system;

    - EROFS file system;

    - Ext4 file system;

    - F2FS file system;

    - FAT file system;

    - FUSE (File system in Userspace);

    - GFS2 file system;

    - HFS+ file system;

    - JFS file system;

    - Network file system (NFS) server daemon;

    - NILFS2 file system;

    - File system notification infrastructure;

    - NTFS3 file system;

    - OCFS2 file system;

    - Proc file system;

    - Pstore file system;

    - Diskquota system;

    - SMB network file system;

    - SquashFS file system;

    - UDF file system;

    - XFS file system;

    - Audit subsystem;

    - RAS (Reliability, Availability, Serviceability) subsystem;

    - Software nodes and device properties;

    - Memory Management;

    - KVM subsystem;

    - Memory management;

    - PPP protocol drivers and compressors;

    - Linux Security Modules (LSM) Framework;

    - Network traffic control;

    - Bluetooth subsystem;

    - MAC80211 subsystem;

    - Netfilter;

    - IP tunnels definitions;

    - Tracing infrastructure;

    - User-space API (UAPI);

    - io_uring subsystem;

    - BPF subsystem;

    - Control group (cgroup);

    - Kernel fork() syscall;

    - Kernel futex primitives;

    - Kernel kexec() syscall;

    - Kernel module support;

    - Scheduler infrastructure;

    - Cryptographic library;

    - KASAN memory debugging framework;

    - Asynchronous Transfer Mode (ATM) subsystem;

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

    - Ethernet bridge;

    - CAIF protocol;

    - CAN network layer;

    - Ceph Core library;

    - Networking core;

    - Distributed Switch Architecture;

    - IPv4 networking;

    - IPv6 networking;

    - XFRM subsystem;

    - L2TP protocol;

    - Management Component Transport Protocol (MCTP);

    - Multipath TCP;

    - NCSI (Network Controller Sideband Interface) driver;

    - NFC subsystem;

    - Open vSwitch;

    - Phonet protocol;

    - Qualcomm IPC Router (QRTR);

    - RDS protocol;

    - RF switch subsystem;

    - Rose network layer;

    - RxRPC session sockets;

    - SCTP protocol;

    - SMC sockets;

    - Stream parser;

    - Sun RPC protocol;

    - TIPC protocol;

    - TLS protocol;

    - Unix domain sockets;

    - VMware vSockets driver;

    - Wireless networking;

    - X.25 network layer;

    - eXpress Data Path;

    - AppArmor security module;

    - Simplified Mandatory Access Control Kernel framework;

    - ALSA framework;

    - FireWire sound drivers;

    - HD-audio driver;

    - AudioScience HPI driver;

    - Creative Sound Blaster X-Fi driver;

    - AMD SoC Alsa drivers;

    - SoC audio core drivers;

    - STI ASoC drivers;

    - USB sound devices; (CVE-2022-49803, CVE-2022-49961, CVE-2022-50073, CVE-2022-50116, CVE-2022-50552,     CVE-2023-52682, CVE-2023-52737, CVE-2023-53545, CVE-2023-53596, CVE-2023-53629, CVE-2024-27389,     CVE-2024-35865, CVE-2024-36898, CVE-2024-36922, CVE-2024-41079, CVE-2024-46715, CVE-2024-46770,     CVE-2024-47809, CVE-2024-50012, CVE-2024-53221, CVE-2024-56557, CVE-2024-56584, CVE-2024-56657,     CVE-2024-56719, CVE-2024-56727, CVE-2025-21712, CVE-2025-21739, CVE-2025-21863, CVE-2025-22107,     CVE-2025-23141, CVE-2025-37786, CVE-2025-38006, CVE-2025-38105, CVE-2025-38192, CVE-2025-38250,     CVE-2025-38562, CVE-2025-38626, CVE-2025-38659, CVE-2025-38710, CVE-2025-39748, CVE-2025-39764,     CVE-2025-40005, CVE-2025-40016, CVE-2025-40103, CVE-2025-40323, CVE-2025-68206, CVE-2025-68239,     CVE-2025-68256, CVE-2025-68307, CVE-2025-68358, CVE-2025-71150, CVE-2025-71161, CVE-2025-71221,     CVE-2025-71232, CVE-2025-71233, CVE-2025-71235, CVE-2025-71236, CVE-2025-71237, CVE-2025-71238,     CVE-2025-71239, CVE-2025-71265, CVE-2025-71266, CVE-2025-71267, CVE-2025-71274, CVE-2025-71287,     CVE-2025-71292, CVE-2025-71304, CVE-2026-23031, CVE-2026-23066, CVE-2026-23100, CVE-2026-23113,     CVE-2026-23141, CVE-2026-23157, CVE-2026-23169, CVE-2026-23204, CVE-2026-23220, CVE-2026-23221,     CVE-2026-23222, CVE-2026-23227, CVE-2026-23228, CVE-2026-23229, CVE-2026-23234, CVE-2026-23235,     CVE-2026-23236, CVE-2026-23237, CVE-2026-23238, CVE-2026-23241, CVE-2026-23242, CVE-2026-23243,     CVE-2026-23253, CVE-2026-23266, CVE-2026-23270, CVE-2026-23277, CVE-2026-23279, CVE-2026-23281,     CVE-2026-23286, CVE-2026-23289, CVE-2026-23290, CVE-2026-23291, CVE-2026-23293, CVE-2026-23296,     CVE-2026-23298, CVE-2026-23300, CVE-2026-23303, CVE-2026-23304, CVE-2026-23307, CVE-2026-23312,     CVE-2026-23318, CVE-2026-23324, CVE-2026-23335, CVE-2026-23336, CVE-2026-23339, CVE-2026-23340,     CVE-2026-23352, CVE-2026-23356, CVE-2026-23357, CVE-2026-23359, CVE-2026-23362, CVE-2026-23365,     CVE-2026-23367, CVE-2026-23368, CVE-2026-23370, CVE-2026-23372, CVE-2026-23379, CVE-2026-23381,     CVE-2026-23382, CVE-2026-23388, CVE-2026-23391, CVE-2026-23392, CVE-2026-23395, CVE-2026-23396,     CVE-2026-23397, CVE-2026-23398, CVE-2026-23399, CVE-2026-23401, CVE-2026-23420, CVE-2026-23434,     CVE-2026-23438, CVE-2026-23439, CVE-2026-23442, CVE-2026-23444, CVE-2026-23446, CVE-2026-23452,     CVE-2026-23454, CVE-2026-23456, CVE-2026-23457, CVE-2026-23458, CVE-2026-23460, CVE-2026-23462,     CVE-2026-23463, CVE-2026-23474, CVE-2026-31393, CVE-2026-31396, CVE-2026-31399, CVE-2026-31400,     CVE-2026-31405, CVE-2026-31407, CVE-2026-31408, CVE-2026-31409, CVE-2026-31411, CVE-2026-31415,     CVE-2026-31416, CVE-2026-31417, CVE-2026-31421, CVE-2026-31422, CVE-2026-31423, CVE-2026-31424,     CVE-2026-31425, CVE-2026-31427, CVE-2026-31428, CVE-2026-31433, CVE-2026-31446, CVE-2026-31447,     CVE-2026-31450, CVE-2026-31452, CVE-2026-31454, CVE-2026-31455, CVE-2026-31464, CVE-2026-31466,     CVE-2026-31467, CVE-2026-31469, CVE-2026-31473, CVE-2026-31476, CVE-2026-31480, CVE-2026-31483,     CVE-2026-31485, CVE-2026-31489, CVE-2026-31494, CVE-2026-31495, CVE-2026-31497, CVE-2026-31498,     CVE-2026-31507, CVE-2026-31508, CVE-2026-31509, CVE-2026-31510, CVE-2026-31512, CVE-2026-31515,     CVE-2026-31518, CVE-2026-31521, CVE-2026-31522, CVE-2026-31523, CVE-2026-31524, CVE-2026-31532,     CVE-2026-31540, CVE-2026-31545, CVE-2026-31546, CVE-2026-31549, CVE-2026-31550, CVE-2026-31551,     CVE-2026-31552, CVE-2026-31555, CVE-2026-31565, CVE-2026-31570, CVE-2026-31576, CVE-2026-31577,     CVE-2026-31578, CVE-2026-31580, CVE-2026-31581, CVE-2026-31583, CVE-2026-31585, CVE-2026-31586,     CVE-2026-31588, CVE-2026-31590, CVE-2026-31594, CVE-2026-31596, CVE-2026-31597, CVE-2026-31598,     CVE-2026-31599, CVE-2026-31602, CVE-2026-31603, CVE-2026-31605, CVE-2026-31615, CVE-2026-31616,     CVE-2026-31617, CVE-2026-31618, CVE-2026-31619, CVE-2026-31622, CVE-2026-31623, CVE-2026-31624,     CVE-2026-31625, CVE-2026-31626, CVE-2026-31627, CVE-2026-31628, CVE-2026-31629, CVE-2026-31630,     CVE-2026-31634, CVE-2026-31642, CVE-2026-31651, CVE-2026-31656, CVE-2026-31658, CVE-2026-31660,     CVE-2026-31661, CVE-2026-31662, CVE-2026-31664, CVE-2026-31665, CVE-2026-31667, CVE-2026-31670,     CVE-2026-31671, CVE-2026-31672, CVE-2026-31673, CVE-2026-31674, CVE-2026-31676, CVE-2026-31679,     CVE-2026-31680, CVE-2026-31681, CVE-2026-31683, CVE-2026-31684, CVE-2026-31686, CVE-2026-31687,     CVE-2026-31694, CVE-2026-31695, CVE-2026-31696, CVE-2026-31697, CVE-2026-31698, CVE-2026-31699,     CVE-2026-31701, CVE-2026-31716, CVE-2026-31720, CVE-2026-31721, CVE-2026-31726, CVE-2026-31728,     CVE-2026-31737, CVE-2026-31738, CVE-2026-31747, CVE-2026-31748, CVE-2026-31749, CVE-2026-31751,     CVE-2026-31752, CVE-2026-31754, CVE-2026-31755, CVE-2026-31756, CVE-2026-31758, CVE-2026-31759,     CVE-2026-31761, CVE-2026-31762, CVE-2026-31763, CVE-2026-31770, CVE-2026-31773, CVE-2026-31778,     CVE-2026-31780, CVE-2026-31781, CVE-2026-31788, CVE-2026-43014, CVE-2026-43015, CVE-2026-43020,     CVE-2026-43024, CVE-2026-43026, CVE-2026-43027, CVE-2026-43028, CVE-2026-43030, CVE-2026-43032,     CVE-2026-43035, CVE-2026-43040, CVE-2026-43041, CVE-2026-43043, CVE-2026-43046, CVE-2026-43047,     CVE-2026-43050, CVE-2026-43051, CVE-2026-43052, CVE-2026-43054, CVE-2026-43058, CVE-2026-43060,     CVE-2026-43061, CVE-2026-43062, CVE-2026-43065, CVE-2026-43066, CVE-2026-43068, CVE-2026-43069,     CVE-2026-43074, CVE-2026-43075, CVE-2026-43076, CVE-2026-43079, CVE-2026-43080, CVE-2026-43085,     CVE-2026-43089, CVE-2026-43093, CVE-2026-43098, CVE-2026-43099, CVE-2026-43103, CVE-2026-43104,     CVE-2026-43105, CVE-2026-43110, CVE-2026-43111, CVE-2026-43112, CVE-2026-43113, CVE-2026-43123,     CVE-2026-43124, CVE-2026-43130, CVE-2026-43132, CVE-2026-43133, CVE-2026-43134, CVE-2026-43135,     CVE-2026-43136, CVE-2026-43139, CVE-2026-43140, CVE-2026-43141, CVE-2026-43145, CVE-2026-43147,     CVE-2026-43148, CVE-2026-43149, CVE-2026-43152, CVE-2026-43156, CVE-2026-43158, CVE-2026-43159,     CVE-2026-43163, CVE-2026-43168, CVE-2026-43171, CVE-2026-43180, CVE-2026-43182, CVE-2026-43183,     CVE-2026-43184, CVE-2026-43187, CVE-2026-43190, CVE-2026-43194, CVE-2026-43196, CVE-2026-43200,     CVE-2026-43202, CVE-2026-43203, CVE-2026-43205, CVE-2026-43206, CVE-2026-43207, CVE-2026-43209,     CVE-2026-43211, CVE-2026-43218, CVE-2026-43223, CVE-2026-43225, CVE-2026-43226, CVE-2026-43227,     CVE-2026-43230, CVE-2026-43231, CVE-2026-43232, CVE-2026-43233, CVE-2026-43236, CVE-2026-43241,     CVE-2026-43242, CVE-2026-43246, CVE-2026-43251, CVE-2026-43255, CVE-2026-43257, CVE-2026-43261,     CVE-2026-43262, CVE-2026-43264, CVE-2026-43266, CVE-2026-43268, CVE-2026-43269, CVE-2026-43270,     CVE-2026-43273, CVE-2026-43275, CVE-2026-43277, CVE-2026-43279, CVE-2026-43281, CVE-2026-43283,     CVE-2026-43287, CVE-2026-43289, CVE-2026-43291, CVE-2026-43295, CVE-2026-43296, CVE-2026-43302,     CVE-2026-43312, CVE-2026-43313, CVE-2026-43314, CVE-2026-43315, CVE-2026-43316, CVE-2026-43324,     CVE-2026-43327, CVE-2026-43328, CVE-2026-43329, CVE-2026-43333, CVE-2026-43334, CVE-2026-43336,     CVE-2026-43339, CVE-2026-43340, CVE-2026-43342, CVE-2026-43343, CVE-2026-43357, CVE-2026-43363,     CVE-2026-43365, CVE-2026-43370, CVE-2026-43373, CVE-2026-43380, CVE-2026-43381, CVE-2026-43382,     CVE-2026-43386, CVE-2026-43387, CVE-2026-43405, CVE-2026-43411, CVE-2026-43420, CVE-2026-43425,     CVE-2026-43426, CVE-2026-43427, CVE-2026-43428, CVE-2026-43429, CVE-2026-43430, CVE-2026-43432,     CVE-2026-43439, CVE-2026-43445, CVE-2026-43449, CVE-2026-43450, CVE-2026-43451, CVE-2026-43452,     CVE-2026-43453, CVE-2026-43458, CVE-2026-43459, CVE-2026-43466, CVE-2026-43469, CVE-2026-43472,     CVE-2026-43473, CVE-2026-43475, CVE-2026-43476, CVE-2026-43480, CVE-2026-43484, CVE-2026-43496,     CVE-2026-43497, CVE-2026-43502, CVE-2026-45834, CVE-2026-45835, CVE-2026-45836, CVE-2026-45838,     CVE-2026-45839, CVE-2026-45840, CVE-2026-45841, CVE-2026-45842, CVE-2026-45843, CVE-2026-45844,     CVE-2026-45846, CVE-2026-45847, CVE-2026-45848, CVE-2026-45852, CVE-2026-45856, CVE-2026-45857,     CVE-2026-45860, CVE-2026-45862, CVE-2026-45864, CVE-2026-45866, CVE-2026-45867, CVE-2026-45868,     CVE-2026-45869, CVE-2026-45870, CVE-2026-45871, CVE-2026-45873, CVE-2026-45875, CVE-2026-45879,     CVE-2026-45883, CVE-2026-45885, CVE-2026-45890, CVE-2026-45891, CVE-2026-45899, CVE-2026-45902,     CVE-2026-45904, CVE-2026-45911, CVE-2026-45912, CVE-2026-45915, CVE-2026-45916, CVE-2026-45919,     CVE-2026-45920, CVE-2026-45924, CVE-2026-45935, CVE-2026-45936, CVE-2026-45941, CVE-2026-45946,     CVE-2026-45948, CVE-2026-45954, CVE-2026-45956, CVE-2026-45958, CVE-2026-45960, CVE-2026-45964,     CVE-2026-45965, CVE-2026-45968, CVE-2026-45969, CVE-2026-45970, CVE-2026-45974, CVE-2026-45978,     CVE-2026-45983, CVE-2026-45984, CVE-2026-45985, CVE-2026-45986, CVE-2026-45987, CVE-2026-45994,     CVE-2026-46002, CVE-2026-46004, CVE-2026-46006, CVE-2026-46009, CVE-2026-46015, CVE-2026-46018,     CVE-2026-46019, CVE-2026-46022, CVE-2026-46023, CVE-2026-46024, CVE-2026-46027, CVE-2026-46033,     CVE-2026-46037, CVE-2026-46040, CVE-2026-46044, CVE-2026-46046, CVE-2026-46047, CVE-2026-46049,     CVE-2026-46050, CVE-2026-46051, CVE-2026-46053, CVE-2026-46062, CVE-2026-46064, CVE-2026-46070,     CVE-2026-46072, CVE-2026-46077, CVE-2026-46080, CVE-2026-46082, CVE-2026-46088, CVE-2026-46098,     CVE-2026-46099, CVE-2026-46101, CVE-2026-46102, CVE-2026-46107, CVE-2026-46108, CVE-2026-46112,     CVE-2026-46120, CVE-2026-46122, CVE-2026-46123, CVE-2026-46124, CVE-2026-46127, CVE-2026-46128,     CVE-2026-46132, CVE-2026-46133, CVE-2026-46137, CVE-2026-46146, CVE-2026-46149, CVE-2026-46150,     CVE-2026-46151, CVE-2026-46161, CVE-2026-46163, CVE-2026-46167, CVE-2026-46168, CVE-2026-46172,     CVE-2026-46174, CVE-2026-46177, CVE-2026-46178, CVE-2026-46184, CVE-2026-46186, CVE-2026-46187,     CVE-2026-46189, CVE-2026-46197, CVE-2026-46198, CVE-2026-46205, CVE-2026-46206, CVE-2026-46209,     CVE-2026-46212, CVE-2026-46214, CVE-2026-46219, CVE-2026-46220, CVE-2026-46227, CVE-2026-46230,     CVE-2026-46231, CVE-2026-46233, CVE-2026-46234, CVE-2026-46236, CVE-2026-46238, CVE-2026-46249,     CVE-2026-46250, CVE-2026-46253, CVE-2026-46259, CVE-2026-46267, CVE-2026-46270, CVE-2026-46273,     CVE-2026-46274, CVE-2026-46275, CVE-2026-46285, CVE-2026-46294, CVE-2026-46301, CVE-2026-46303,     CVE-2026-46304, CVE-2026-46307, CVE-2026-46319, CVE-2026-46328, CVE-2026-52911, CVE-2026-52912,     CVE-2026-52914, CVE-2026-52915, CVE-2026-52916, CVE-2026-52919, CVE-2026-52920, CVE-2026-52921,     CVE-2026-52922, CVE-2026-52925, CVE-2026-52926, CVE-2026-52931, CVE-2026-52954, CVE-2026-52955,     CVE-2026-52957, CVE-2026-52958, CVE-2026-52962, CVE-2026-52963, CVE-2026-52969, CVE-2026-52970,     CVE-2026-52982, CVE-2026-52984, CVE-2026-52985, CVE-2026-52986, CVE-2026-52992, CVE-2026-52993,     CVE-2026-52995, CVE-2026-52998, CVE-2026-52999, CVE-2026-53001, CVE-2026-53002, CVE-2026-53003,     CVE-2026-53004, CVE-2026-53006, CVE-2026-53011, CVE-2026-53012, CVE-2026-53016, CVE-2026-53021,     CVE-2026-53022, CVE-2026-53023, CVE-2026-53037, CVE-2026-53039, CVE-2026-53040, CVE-2026-53041,     CVE-2026-53043, CVE-2026-53045, CVE-2026-53046, CVE-2026-53047, CVE-2026-53048, CVE-2026-53049,     CVE-2026-53050, CVE-2026-53059, CVE-2026-53060, CVE-2026-53061, CVE-2026-53062, CVE-2026-53064,     CVE-2026-53065, CVE-2026-53068, CVE-2026-53069, CVE-2026-53071, CVE-2026-53072, CVE-2026-53073,     CVE-2026-53074, CVE-2026-53075, CVE-2026-53077, CVE-2026-53082, CVE-2026-53088, CVE-2026-53093,     CVE-2026-53096, CVE-2026-53112, CVE-2026-53128, CVE-2026-53130, CVE-2026-53287, CVE-2026-53291,     CVE-2026-53294, CVE-2026-53295, CVE-2026-53296, CVE-2026-53304, CVE-2026-53306, CVE-2026-53309,     CVE-2026-53320, CVE-2026-53369, CVE-2026-53379, CVE-2026-63860, CVE-2026-63865, CVE-2026-64018,     CVE-2026-64032, CVE-2026-64033, CVE-2026-64034, CVE-2026-64039, CVE-2026-64046, CVE-2026-64047,     CVE-2026-64055, CVE-2026-64056, CVE-2026-64083, CVE-2026-64084, CVE-2026-64085, CVE-2026-64086,     CVE-2026-64087, CVE-2026-64088, CVE-2026-64089, CVE-2026-64096, CVE-2026-64102, CVE-2026-64103,     CVE-2026-64113, CVE-2026-64114, CVE-2026-64115, CVE-2026-64125, CVE-2026-64133, CVE-2026-64135,     CVE-2026-64153, CVE-2026-64155, CVE-2026-64164, CVE-2026-64165, CVE-2026-64166, CVE-2026-64168,     CVE-2026-64173, CVE-2026-64174, CVE-2026-64177, CVE-2026-64178, CVE-2026-64179, CVE-2026-64185,     CVE-2026-64218, CVE-2026-64219, CVE-2026-64220, CVE-2026-64221, CVE-2026-64587)

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.

  - USB: dummy-hcd: Fix interrupt synchronization error This fixes an error in synchronization in the dummy-     hcd driver. The error has a somewhat involved history. The synchronization mechanism was introduced by     commit 7dbd8f4cabd9 (USB: dummy-hcd: Fix erroneous synchronization change), which added an emulated     interrupts enabled flag together with code emulating synchronize_irq() (it waits until all current     handler callbacks have returned). But the emulated interrupt-disable occurred too late, after the driver     containing the handler callback routines had been told that it was unbound and no more callbacks would     occur. Commit 4a5d797a9f9c (usb: gadget: dummy_hcd: fix gpf in gadget_setup) tried to fix this by moving     the synchronize_irq() emulation code from dummy_stop() to dummy_pullup(), which runs before the unbind     callback. There still were races, though, because the emulated interrupt-disable still occurred too late.
    It couldn't be moved to dummy_pullup(), because that routine can be called for reasons other than an     impending unbind. Therefore commits 7dc0c55e9f30 (USB: UDC core: Add udc_async_callbacks gadget op) and     04145a03db9d (USB: UDC: Implement udc_async_callbacks in dummy-hcd) added an API allowing the UDC core     to tell dummy-hcd exactly when emulated interrupts and their callbacks should be disabled. That brings us     to the current state of things, which is still wrong because the emulated synchronize_irq() occurs before     the emulated interrupt-disable! That's no good, beause it means that more emulated interrupts can occur     after the synchronize_irq() emulation has run, leading to the possibility that a callback handler may be     running when the gadget driver is unbound. To fix this, we have to move the synchronize_irq() emulation     code yet again, to the dummy_udc_async_callbacks() routine, which takes care of enabling and disabling     emulated interrupt requests. The synchronization will now run immediately after emulated interrupts are     disabled, which is where it belongs. (CVE-2026-43324)

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

ID	Name	Product	Family	Type	Severity
340682	Ubuntu 20.04 LTS : Linux kernel (GCP) vulnerabilities (USN-8668-1)	Nessus	Ubuntu Local Security Checks	Local	high
340680	Ubuntu 24.04 LTS / Pro Realtime 24.04 LTS : Linux kernel (Raspberry Pi) vulnerabilities (USN-8665-1)	Nessus	Ubuntu Local Security Checks	Local	high
335080	openSUSE 16: cluster-md-kmp-64kb / cluster-md-kmp-azure / cluster-md-kmp-default / etc (openSUSE-SU-2026:21555-1)	Nessus	SuSE Local Security Checks	Local	high
329149	SUSE SLED15: cluster-md-kmp-default / dlm-kmp-default / gfs2-kmp-default / etc (SUSE-SU-2026:3166-1)	Nessus	SuSE Local Security Checks	Local	medium
314407	Linux Distros Unpatched Vulnerability : CVE-2026-43324	Nessus	Misc.	Local	high

Detections

Analytics

CVE-2026-43324

high

Tenable Plugins

high

high

high

medium

high