CVE-2026-31755
usb: cdns3: gadget: fix NULL pointer dereference in ep_queue
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
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.
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
5.4
References 8
git.kernel.org
- stable/c/3cf0580a09d417eab41ce914a11f9cde3a121871
- stable/c/3d1433fe34b224b90259e207e5389e95b504ef04
- stable/c/fb2ad0c1334a3eccfe4ed203f9eef5a4879226f6
- stable/c/9ab9b0e5fcdac325f950fc8b6caa08a9e22a0db9
- stable/c/d61446dfc9d387775bb1b95b081953201b9222af
- stable/c/390536cc6af4ca5566bc3bf1f8b704700380cd2c
- stable/c/14bf08ab2cdfcdfd3f13e799d06692a1b3e0745f
- stable/c/7f6f127b9bc34bed35f56faf7ecb1561d6b39000