CVE-2026-90045

CVE-2026-90045 is a use-after-free vulnerability in the Linux kernel 's USB gadget FunctionFS (ffs) driver. The io_data structure stores a pointer to the submitting task's mm_struct but fails to hold a reference while asynchronous requests remain pending. If the task exits before completion handl...

PT-2026-90448

In the Linux kernel, the following vulnerability has been resolved: usb: gadget: f fs: Prevent deadlock during ep0 read loop Currently, ffs ep0 read holds ffs-mutex when it prepares to go to sleep waiting for an event. When no setup events are pending, it calls wait event interruptible exclusive...

EUVD-2026-53781

In the Linux kernel, the following vulnerability has been resolved: usb: gadget: ffs: initialize resetwork at allocation time ffsfskillsb unconditionally calls cancelworksync on ffs-resetwork when a functionfs instance is unmounted: ffsdataresetffs; cancelworksync&ffs-resetwork; However...

EUVD-2026-48872

In the Linux kernel, the following vulnerability has been resolved: usb: gadget: ffs: Fix DMA fence leak In ffsdmabuftransfer, a ffsdmafence object is kmalloc'd, with the underlying dmafence later initialized by dmafenceinit, which sets its kref counter to 1. Then, dmaresvaddfence gets a second...

CVE-2026-64327 usb: gadget: f_fs: Initialize epfile->in early to fix endpoint direction checks

In the Linux kernel, the following vulnerability has been resolved: usb: gadget: ffs: Initialize epfile-in early to fix endpoint direction checks When parsing endpoint descriptors, ffsdatagotdescs generates the epsaddrmap which contains the endpoint direction. However, epfile-in was previously on...

PT-2026-64548

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the USB gadget functionfs module where the epfile-in variable is initialized too late. Specifically, epfile-in was only populated within the ffs func eps enable...

Unity Linux 20.1050e Security Update: kernel (UTSA-2026-005062)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-005062 advisory. In the Linux kernel, the following vulnerability has been resolved: usb: gadget: ffs: Fix race between aiocancel and AIO request complete FFS based applications can...

Linux Distros Unpatched Vulnerability : CVE-2022-49755

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - usb: gadget: ffs: Prevent race during ffsep0queuewait While performing fast composition switch, there is a possibility that the process of ffsep0write/ffsep0rea...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: usb: gadget: ffs: Fixed race between aiocancel and AIO request complete FFS-based applications can utilize the aiocancel callback to dequeue pending USB requests submitted to the UDC. There is a scenario where the FFS application...

DEBIAN-CVE-2024-36894

In the Linux kernel, the following vulnerability has been resolved: usb: gadget: ffs: Fix race between aiocancel and AIO request complete FFS based applications can utilize the aiocancel callback to dequeue pending USB requests submitted to the UDC. There is a scenario where the FFS application...