PT-2026-93686

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A use-after-free issue exists in the USB gadget functionfs ffs component. The io data structure stores a pointer to the mm struct of the submitting task but fails to maintain a reference...

PT-2026-93685

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A Use-After-Free issue exists in the USB gadget functionfs module. In the ffs epfile write iter and ffs epfile read iter functions, when ffs epfile io fails with an error other than...

CVE-2026-63894

Summary (CVE-2026-63894): A race in Linux kernel’s FunctionFS DMABUF handling allows a freed usb_request to be dequeued via an obsolete priv->req pointer when cancelling a DMABUF attachment. The root cause is that ffs_epfile_dmabuf_io_complete() frees the request but leaves priv->req pointi...

EUVD-2025-201630

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...