CVE-2026-31755: Linux kernel · usb: cdns3: gadget: fix NULL pointer dereference in ep_queue
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 11 Nov 2026, 22:20 UTC
Rated by Threat Radar · No CVSS score from NVD or the CNA
Thin evidence
One scorer or noneExploitation evidence
Disclosed: evidence found.
CVE published 1 May 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 11 Nov 2026.
Description
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.
References
- git.kernel.org/stable/c/3cf0580a09d417eab41ce914a11f9cde3a121871 (opens in a new tab)
- git.kernel.org/stable/c/3d1433fe34b224b90259e207e5389e95b504ef04 (opens in a new tab)
- git.kernel.org/stable/c/fb2ad0c1334a3eccfe4ed203f9eef5a4879226f6 (opens in a new tab)
- git.kernel.org/stable/c/9ab9b0e5fcdac325f950fc8b6caa08a9e22a0db9 (opens in a new tab)
- git.kernel.org/stable/c/d61446dfc9d387775bb1b95b081953201b9222af (opens in a new tab)
- git.kernel.org/stable/c/390536cc6af4ca5566bc3bf1f8b704700380cd2c (opens in a new tab)
- git.kernel.org/stable/c/14bf08ab2cdfcdfd3f13e799d06692a1b3e0745f (opens in a new tab)
- git.kernel.org/stable/c/7f6f127b9bc34bed35f56faf7ecb1561d6b39000 (opens in a new tab)