Vulnerability-Lookup

FKIE_CVE-2026-31755

Vulnerability from fkie_nvd - Published: 2026-05-01 15:16 - Updated: 2026-05-08 18:45

Severity

5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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.

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/14bf08ab2cdfcdfd3f13e799d06692a1b3e0745f	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/390536cc6af4ca5566bc3bf1f8b704700380cd2c	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/3d1433fe34b224b90259e207e5389e95b504ef04	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/7f6f127b9bc34bed35f56faf7ecb1561d6b39000	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/9ab9b0e5fcdac325f950fc8b6caa08a9e22a0db9	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/d61446dfc9d387775bb1b95b081953201b9222af	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/fb2ad0c1334a3eccfe4ed203f9eef5a4879226f6	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0

JSON

To clipboard

{
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    }
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  "metrics": {
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          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
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}

CVE-2026-31755 (GCVE-0-2026-31755)

Vulnerability from cvelistv5 – Published: 2026-05-01 14:14 – Updated: 2026-05-11 22:15

Title

usb: cdns3: gadget: fix NULL pointer dereference in ep_queue

Summary

Severity

No CVSS data available.

Assigner

Linux

References

7 references

URL	Tags
https://git.kernel.org/stable/c/3d1433fe34b224b90…
https://git.kernel.org/stable/c/fb2ad0c1334a3eccf…
https://git.kernel.org/stable/c/9ab9b0e5fcdac325f…
https://git.kernel.org/stable/c/d61446dfc9d387775…
https://git.kernel.org/stable/c/390536cc6af4ca556…
https://git.kernel.org/stable/c/14bf08ab2cdfcdfd3…
https://git.kernel.org/stable/c/7f6f127b9bc34bed3…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 7733f6c32e36ff9d7adadf40001039bf219b1cbe , < 3d1433fe34b224b90259e207e5389e95b504ef04 (git) Affected: 7733f6c32e36ff9d7adadf40001039bf219b1cbe , < fb2ad0c1334a3eccfe4ed203f9eef5a4879226f6 (git) Affected: 7733f6c32e36ff9d7adadf40001039bf219b1cbe , < 9ab9b0e5fcdac325f950fc8b6caa08a9e22a0db9 (git) Affected: 7733f6c32e36ff9d7adadf40001039bf219b1cbe , < d61446dfc9d387775bb1b95b081953201b9222af (git) Affected: 7733f6c32e36ff9d7adadf40001039bf219b1cbe , < 390536cc6af4ca5566bc3bf1f8b704700380cd2c (git) Affected: 7733f6c32e36ff9d7adadf40001039bf219b1cbe , < 14bf08ab2cdfcdfd3f13e799d06692a1b3e0745f (git) Affected: 7733f6c32e36ff9d7adadf40001039bf219b1cbe , < 7f6f127b9bc34bed35f56faf7ecb1561d6b39000 (git)
Linux	Linux	Affected: 5.4 Unaffected: 0 , < 5.4 (semver) Unaffected: 5.15.203 , ≤ 5.15.* (semver) Unaffected: 6.1.168 , ≤ 6.1.* (semver) Unaffected: 6.6.134 , ≤ 6.6.* (semver) Unaffected: 6.12.81 , ≤ 6.12.* (semver) Unaffected: 6.18.22 , ≤ 6.18.* (semver) Unaffected: 6.19.12 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/usb/cdns3/cdns3-gadget.c"
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    "dateUpdated": "2026-05-11T22:15:11.200Z",
    "state": "PUBLISHED"
  },
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

FKIE_CVE-2026-31755

CVE-2026-31755 (GCVE-0-2026-31755)

Tags

Sightings

Nomenclature