Medium 5.5Published May 1, 2026

CVE-2026-31755usb: cdns3: gadget: fix NULL pointer dereference in ep_queue

Updated under an hour ago (Oct 27, 2026, 10:23 PM ET)

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: usb: cdns3: gadget: fix NULL pointer dereference in ep_queue When the gadget endpoint is disabled or not yet configured, the ep->desc pointer can be NULL. This leads to a NULL pointer dereference when __cdns3_gadget_ep_queue() is called, causing a kernel crash. Add a check to return -ESHUTDOWN if ep->desc is NULL, which is the standard return code for unconfigured endpoints. This prevents potential crashes when ep_queue is called on endpoints that are not ready.

CVSS: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Jul 4, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	7733f6c32e36ff9d7adadf40001039bf219b1cbe builds before 3cf0580a09d417eab41ce914a11f9cde3a121871; 7733f6c32e36ff9d7adadf40001039bf219b1cbe builds before 3d1433fe34b224b90259e207e5389e95b504ef04; from 7733f6c32e36ff9d7adadf40001039bf219b1cbe before fb2ad0c1334a3eccfe4ed203f9eef5a4879226f6; 7733f6c32e36ff9d7adadf40001039bf219b1cbe builds before 9ab9b0e5fcdac325f950fc8b6caa08a9e22a0db9; from 7733f6c32e36ff9d7adadf40001039bf219b1cbe before d61446dfc9d387775bb1b95b081953201b9222af; from 7733f6c32e36ff9d7adadf40001039bf219b1cbe before 390536cc6af4ca5566bc3bf1f8b704700380cd2c; 7733f6c32e36ff9d7adadf40001039bf219b1cbe builds before 14bf08ab2cdfcdfd3f13e799d06692a1b3e0745f; 7733f6c32e36ff9d7adadf40001039bf219b1cbe builds before 7f6f127b9bc34bed35f56faf7ecb1561d6b39000	CNA record
linux linux_kernel linux:linux_kernel	from 5.4 before 5.15.203; from 5.16 before 6.1.168; from 6.2 before 6.6.134; from 6.7 before 6.12.81; from 6.13 before 6.18.22; from 6.19 before 6.19.12; 7.0; 7.0; and 4 more ranges	NVD

References

References

https://git.kernel.org/stable/c/3cf0580a09d417eab41ce914a11f9cde3a121871
https://git.kernel.org/stable/c/3d1433fe34b224b90259e207e5389e95b504ef04	patch
https://git.kernel.org/stable/c/fb2ad0c1334a3eccfe4ed203f9eef5a4879226f6	patch
https://git.kernel.org/stable/c/9ab9b0e5fcdac325f950fc8b6caa08a9e22a0db9	patch
https://git.kernel.org/stable/c/d61446dfc9d387775bb1b95b081953201b9222af	patch
https://git.kernel.org/stable/c/390536cc6af4ca5566bc3bf1f8b704700380cd2c	patch
https://git.kernel.org/stable/c/14bf08ab2cdfcdfd3f13e799d06692a1b3e0745f	patch
https://git.kernel.org/stable/c/7f6f127b9bc34bed35f56faf7ecb1561d6b39000	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.