CVE-2026-31755usb: cdns3: gadget: fix NULL pointer dereference in ep_queue
- 5.5MediumCVSS base score
- 0.12%Exploitation in 30 daysEPSS · top 98% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By Linux
- 53 days later
· 53 days later
Published
- 2 months later
· 2 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.12% · top 98% of all CVEs (12 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
- affected 7733f6c32e36ff9d7adadf40001039bf219b1cbe – < 3cf0580a09d417eab41ce914a11f9cde3a121871
- affected 7733f6c32e36ff9d7adadf40001039bf219b1cbe – < 3d1433fe34b224b90259e207e5389e95b504ef04
- affected 7733f6c32e36ff9d7adadf40001039bf219b1cbe – < fb2ad0c1334a3eccfe4ed203f9eef5a4879226f6
- affected 7733f6c32e36ff9d7adadf40001039bf219b1cbe – < 9ab9b0e5fcdac325f950fc8b6caa08a9e22a0db9
- affected 7733f6c32e36ff9d7adadf40001039bf219b1cbe – < d61446dfc9d387775bb1b95b081953201b9222af
- affected 7733f6c32e36ff9d7adadf40001039bf219b1cbe – < 390536cc6af4ca5566bc3bf1f8b704700380cd2c
- affected 7733f6c32e36ff9d7adadf40001039bf219b1cbe – < 14bf08ab2cdfcdfd3f13e799d06692a1b3e0745f
- affected 7733f6c32e36ff9d7adadf40001039bf219b1cbe – < 7f6f127b9bc34bed35f56faf7ecb1561d6b39000
- affected 5.4
- unaffected < 5.4
- unaffected 5.10.260 – ≤ 5.10.*
- unaffected 5.15.203 – ≤ 5.15.*
- unaffected 6.1.168 – ≤ 6.1.*
- unaffected 6.6.134 – ≤ 6.6.*
- unaffected 6.12.81 – ≤ 6.12.*
- unaffected 6.18.22 – ≤ 6.18.*
- unaffected 6.19.12 – ≤ 6.19.*
- unaffected 7.0 – ≤ *
References
References8
- https://git.kernel.org/stable/c/3cf0580a09d417eab41ce914a11f9cde3a121871 (opens in a new tab)
- https://git.kernel.org/stable/c/3d1433fe34b224b90259e207e5389e95b504ef04 (opens in a new tab)
- https://git.kernel.org/stable/c/fb2ad0c1334a3eccfe4ed203f9eef5a4879226f6 (opens in a new tab)
- https://git.kernel.org/stable/c/9ab9b0e5fcdac325f950fc8b6caa08a9e22a0db9 (opens in a new tab)
- https://git.kernel.org/stable/c/d61446dfc9d387775bb1b95b081953201b9222af (opens in a new tab)
- https://git.kernel.org/stable/c/390536cc6af4ca5566bc3bf1f8b704700380cd2c (opens in a new tab)
- https://git.kernel.org/stable/c/14bf08ab2cdfcdfd3f13e799d06692a1b3e0745f (opens in a new tab)
- https://git.kernel.org/stable/c/7f6f127b9bc34bed35f56faf7ecb1561d6b39000 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-26568 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-31755)Record last updated .