CVE-2026-93121
CVE CVE-2026-93121EUVD EUVD-2026-82229Published 2026-09-17T16:11:27.000ZLast changed 2026-09-18T17:56:03.000ZCVSS 7.0
What the advisory describes
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.
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Linux — Linux 6.9; patch: 6.12.110; 7b07a2a7ca02a20124b552be96c5a56910795488 <be539138d9a187af3b884525a395db10797c64f1; 7b07a2a7ca02a20124b552be96c5a56910795488 <5fd8baacc7dc477df9cac61b45491840247a9b1e; patch: 0; patch: 7.3-rc1; 7b07a2a7ca02a20124b552be96c5a56910795488 <621707dc67c9846fd876d7579ec951d92aa033f1; patch: 7.2.6; patch: 6.18.52; 7b07a2a7ca02a20124b552be96c5a56910795488 <58952c83dfe6ea3294a74734d2d1018c1120779a
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
Does this concern one of your customers?
This page cannot answer that — it does not know your estate. Whoever has recorded their environments gets the answer the morning after publication, together with a paragraph they can forward to the customer unedited.
Try it for 28 daysPatchlage reports hits and suspected hits. About everything else this system says nothing — neither this page nor the situation report ever claims that an estate is safe.