ffs

FFS - F 文件系统 这是一个用于搜索文件（类似grep）的CLI工具，它不使用操作系统内核来读取文件，而是直接读取你的磁盘。它几乎没什么实际用途，但 非常酷 。 这只是大约1500行C代码，它： 仅在读取原始设备节点（例如 /dev/rdisk）时需要sudo；搜索镜像文件无需提升权限 需要在macOS主磁盘上运行时禁用SIP保护 可能会错过部分最近写入的文件（需要手动执行 sync 调用） 在文件系统高度活跃且其他系统组件同时写入文件时，可能无法搜索目录树 仅能用于本项目手动实现的文件系统 但同时： 直接从磁盘读取块 绕过VFS/缓冲 read 路径，而是直接 pread 块设备...

Astra Linux – Vulnerability in Linux 6.1

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

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...

CVE-2026-64328

A flaw was found in the Linux kernel's USB gadget subsystem. Specifically, a DMA Direct Memory Access fence leak exists in the ffs module's ffsdmabuftransfer function. This issue causes ffsdmafence objects to be allocated without their initial reference being properly released. Repeated...

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...

EUVD-2026-48871

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...

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...

Linux Distros Unpatched Vulnerability : CVE-2026-64327

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: Initialize epfile-in early to fix endpoint direction checks When parsing endpoint descriptors, ffsdatagotdescs generates the epsaddrmap which...

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...

Linux Distros Unpatched Vulnerability : CVE-2026-64328

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: Fix DMA fence leak In ffsdmabuftransfer, a ffsdmafence object is kmalloc'd, with the underlying dmafence later initialized by dmafenceinit,...

CVE-2026-64255

In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: mld: validate stamask before ffs in BA session handlers Three BA session handlers use ffsbadata-stamask - 1 to derive a station ID without checking that stamask is non-zero. When stamask is zero, ffs returns 0 and...

CVE-2026-64255

In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: mld: validate stamask before ffs in BA session handlers Three BA session handlers use ffsbadata-stamask - 1 to derive a station ID without checking that stamask is non-zero. When stamask is zero, ffs returns 0 and...

CVE-2026-64255 wifi: iwlwifi: mld: validate sta_mask before ffs() in BA session handlers

In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: mld: validate stamask before ffs in BA session handlers Three BA session handlers use ffsbadata-stamask - 1 to derive a station ID without checking that stamask is non-zero. When stamask is zero, ffs returns 0 and...

Unity Linux 20.1070a Security Update: kernel (UTSA-2026-013089)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-013089 advisory. 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...

Unity Linux 20.1050e / 20.1070e Security Update: kernel (UTSA-2026-011254)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-011254 advisory. 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...

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...

CVE-2025-71074

In the Linux kernel, the following vulnerability has been resolved: functionfs: fix the open/removal races ffsepfileopen can race with removal, ending up with file-privatedata pointing to freed object. There is a total count of opened files on functionfs both ep0 and dynamic ones and when it hits...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-000887)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-000887 advisory. Use-after-free vulnerability in the ffsusercopyworker function in drivers/usb/gadget/function/ffs.c in the Linux kernel before 4.5.3 allows local users to gain...

UBUNTU-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

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...