CVE-2026-93121

Last refreshed2026-10-19

Status: UPDATED | Advisory ID: CVE-2026-93121

Key Details

CVE	CVE-2026-93121
CVSS Score / Version	7.0 (High) / CVSS v3.1
Updated	2026-10-19
CVSS Vector	`CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H`
CVSS Prose	attack vector is local; attack complexity is high; privileges required is low; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is high; availability impact is high.
Affected products	Linux Kernel

Vendor	Product	Affected Versions	Patch Status
Linux	Linux Kernel

Vendor

Product

Affected Versions

Patch Status

Linux

Linux Kernel

Subsystems	OT Supporting Infrastructure
Sectors	All Sectors

In the Linux kernel, the following vulnerability has been resolved:

usb: gadget: f_fs: Fix fence cleanup in ffs_dmabuf_transfer() error paths

The error paths for endpoint-disabled (ESHUTDOWN) and request-allocation

failure (ENOMEM) in ffs_dmabuf_transfer() jump to err_fence_put which

calls dma_fence_put() on the fence. However, at that point the fence has

only been kmalloc'd — dma_fence_init() has not been called yet, so the

refcount and the fence ops are uninitialized. Calling dma_fence_put() on

such an object leads to undefined behavior.

Use kfree() instead, since the fence is just a plain allocation at this

stage, and rename the label to err_fence_free to reflect the actual

cleanup action. (NVD)

Monitor Linux's web page for any future patch releases.

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-93121
CVE	https://www.cve.org/CVERecord?id=CVE-2026-93121

Source

Reference

NVD

CVE