CVE-2026-64328

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-2026-64328 usb: gadget: f_fs: Fix DMA fence leak

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...

SUSE CVE-2026-63895

In the Linux kernel, the following vulnerability has been resolved: usb: gadget: ffs: copy only received bytes on short ep0 read ffsep0read allocates its control-OUT data buffer with kmalloc not kzalloc at the Length value from the Setup packet, then copies that full len to userspace regardless o...

CVE-2025-40315

In the Linux kernel, the following vulnerability has been resolved: usb: gadget: ffs: Fix epfile null pointer access after ep enable. A race condition occurs when ffsfuncepsenable runs concurrently with ffsdatareset. The ffsdataclear called in ffsdatareset sets ffs-epfiles to NULL before resettin...

CVE-2025-40315

CVE-2025-40315: In the Linux kernel usb gadget f_fs, a race allowed NULL pointer dereference when ffs_func_eps_enable() could access epfile->ep after concurrent ffs_data_reset(). The fix adds NULL pointer handling for ffs->epfiles in ffs_func_eps_enable() and aligns NULLing of epfiles under...

Siemens SIMATIC Devices Race Condition (CVE-2024-57913)

In the Linux kernel, the following vulnerability has been resolved: usb: gadget: ffs: Remove WARNON in functionfsbind This plugin only works with Tenable.ot. Please visit https://www.tenable.com/products/tenable-ot for more information. %NASLMINLEVEL 80900 C Tenable, Inc. include'compat.inc'; if...

Unity Linux 20.1070e Security Update: kernel (UTSA-2025-986724)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-986724 advisory. In the Linux kernel, the following vulnerability has been resolved: usb: gadget: ffs: Prevent race during ffsep0queuewait While performing fast composition switch,...

EUVD-2021-33581

Malicious code in bioql PyPI...

The vulnerability of the f_fs component in the Linux operating system’s kernel allows a hacker to trigger a service failure.

The vulnerability of the ffs component in the Linux operating system’s kernel is related to improper locking of resources. Exploiting this vulnerability can allow an attacker to cause a service failure...

CVE-2022-48822

In the Linux kernel, the following vulnerability has been resolved: usb: ffs: Fix use-after-free for epfile Consider a case where ffsfuncepsdisable is called from ffsfuncdisable as part of composition switch and at the same time ffsepfilerelease get called from userspace. ffsepfilerelease will fr...

CVE-2022-48822

CVE-2022-48822 — Linux kernel usb f_fs use-after-free (epfile) Technical summary: A race between ffs_func_eps_disable (which uses a local copy of epfiles) and ffs_epfile_release can lead to use-after-free of the epfile read buffer. While ffs_epfile_release frees the buffer and destroys ffs->ep...

CVE-2022-48822 usb: f_fs: Fix use-after-free for epfile

In the Linux kernel, the following vulnerability has been resolved: usb: ffs: Fix use-after-free for epfile Consider a case where ffsfuncepsdisable is called from ffsfuncdisable as part of composition switch and at the same time ffsepfilerelease get called from userspace. ffsepfilerelease will fr...

CVE-2022-48822

In the Linux kernel, the following vulnerability has been resolved: usb: ffs: Fix use-after-free for epfile Consider a case where ffsfuncepsdisable is called from ffsfuncdisable as part of composition switch and at the same time ffsepfilerelease get called from userspace. ffsepfilerelease will fr...

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...

Linux kernel security vulnerabilities

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in Linux kernel, which originates from a competitive condition vulnerability in the usb:gadget:ffs module...

CVE-2021-46933

In the Linux kernel, the following vulnerability has been resolved: usb: gadget: ffs: Clear ffseventfd in ffsdataclear. ffsdataclear is indirectly called from both ffsfskillsb and ffsep0release, so it ends up being called twice when userland closes ep0 and then unmounts ffs. If userland provided ...

CVE-2021-46933

In the Linux kernel, the following vulnerability has been resolved: usb: gadget: ffs: Clear ffseventfd in ffsdataclear. ffsdataclear is indirectly called from both ffsfskillsb and ffsep0release, so it ends up being called twice when userland closes ep0 and then unmounts ffs. If userland provided ...

Design/Logic Flaw

In the Linux kernel, the following vulnerability has been resolved: usb: gadget: ffs: Clear ffseventfd in ffsdataclear. ffsdataclear is indirectly called from both ffsfskillsb and ffsep0release, so it ends up being called twice when userland closes ep0 and then unmounts ffs. If userland provided ...

UBUNTU-CVE-2021-46933

In the Linux kernel, the following vulnerability has been resolved: usb: gadget: ffs: Clear ffseventfd in ffsdataclear. ffsdataclear is indirectly called from both ffsfskillsb and ffsep0release, so it ends up being called twice when userland closes ep0 and then unmounts ffs. If userland provided ...

CVE-2021-46933 usb: gadget: f_fs: Clear ffs_eventfd in ffs_data_clear.

In the Linux kernel, the following vulnerability has been resolved: usb: gadget: ffs: Clear ffseventfd in ffsdataclear. ffsdataclear is indirectly called from both ffsfskillsb and ffsep0release, so it ends up being called twice when userland closes ep0 and then unmounts ffs. If userland provided ...