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NVD / CVE Program· CNA Linux

CVE-2025-40314: usb: cdns3: gadget: Use-after-free during failed initialization and exit of cdnsp gadget

Noroxi assessment

Priority: Monitor (action score 0/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.19% (FIRST EPSS).
  • Fixed version: Linux Linux 0cf9a50af91fbdac3849f8d950e883a3eaa3ecea, 37158ce6ba964b62d1e3eebd11f03c6900a52dd1, 87c5ff5615dc0a37167e8faf3adeeddc6f1344a3.

Low priority for now. Upgrade to Linux Linux 0cf9a50af91fbdac3849f8d950e883a3eaa3ecea, 37158ce6ba964b62d1e3eebd11f03c6900a52dd1, 87c5ff5615dc0a37167e8faf3adeeddc6f1344a3 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In the Linux kernel, the following vulnerability has been resolved: usb: cdns3: gadget: Use-after-free during failed initialization and exit of cdnsp gadget In the __cdnsp_gadget_init() and cdnsp_gadget_exit() functions, the gadget structure (pdev->gadget) was freed before its endpoints. The endpoints are linked via the ep_list in the gadget structure. Freeing the gadget first leaves dangling pointers in the endpoint list. When the endpoints are subsequently freed, this results in a use-after-free. Fix: By separating the usb_del_gadget_udc() operation into distinct "del" and "put" steps, cdnsp_gadget_free_endpoints() can be executed prior to the final release of the gadget structure with usb_put_gadget(). A patch similar to bb9c74a5bd14("usb: dwc3: gadget: Free gadget structure only after freeing endpoints").

—No exploit Fix available
Published
Dec 8, 2025
Updated
Oct 14, 2026
EPSS
0.1% · 8th percentile
CWE
—

Report tools

JSON

Action score

0

Monitor

Low priority for now.

CVSS
0 / 40 · —
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

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  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

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Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 5.3affected
    • 8bc1901ca7b07d864fca11461b3875b31f949765 and later · before 0cf9a50af91fbdac3849f8d950e883a3eaa3eceaaffected · git
    • 8bc1901ca7b07d864fca11461b3875b31f949765 and later · before 37158ce6ba964b62d1e3eebd11f03c6900a52dd1affected · git
    • 8bc1901ca7b07d864fca11461b3875b31f949765 and later · before ea37884097a0931abb8e11e40eacfb25e9fdb5e9affected · git
    • 8bc1901ca7b07d864fca11461b3875b31f949765 and later · before 9c52f01429c377a2d32cafc977465f37b5384f77affected · git
    • 8bc1901ca7b07d864fca11461b3875b31f949765 and later · before fdf573c517627a96f5040f988e9b21267806be5caffected · git
    • 8bc1901ca7b07d864fca11461b3875b31f949765 and later · before 87c5ff5615dc0a37167e8faf3adeeddc6f1344a3affected · git
    • before 5.3not affected · semver
    • 5.15.197 and later · up to and including 5.15.*not affected · semver
    • 6.1.159 and later · up to and including 6.1.*not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.159-16.1.159-1
Debian:13linuxbefore 6.12.63-16.12.63-1
Debian:14linuxbefore 6.17.8-16.17.8-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2025-40312Dec 8, 2025 · jfs: Verify inode mode when loading from disk
    0Monitor
  • ← EarlierCVE-2025-40313Dec 8, 2025 · ntfs3: pretend $Extend records as regular files
    0Monitor
  • Later →CVE-2025-40315Dec 8, 2025 · usb: gadget: f_fs: Fix epfile null pointer access after ep enable.
    0Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux0cf9a50af91fbdac3849f8d950e883a3eaa3eceaVendor (CNA)
Linux Linux37158ce6ba964b62d1e3eebd11f03c6900a52dd1Vendor (CNA)
Linux Linux87c5ff5615dc0a37167e8faf3adeeddc6f1344a3Vendor (CNA)
Linux Linux9c52f01429c377a2d32cafc977465f37b5384f77Vendor (CNA)
Linux Linuxea37884097a0931abb8e11e40eacfb25e9fdb5e9Vendor (CNA)
Linux Linuxfdf573c517627a96f5040f988e9b21267806be5cVendor (CNA)
debian:linux6.1.159-1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

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Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

No CVSS vector for this record, so attack conditions can't be derived.

Weakness class (CWE)

—

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

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References

Show all references (5 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

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