Vulnerability-Lookup

FKIE_CVE-2026-23447

Vulnerability from fkie_nvd - Published: 2026-04-03 16:16 - Updated: 2026-04-23 20:56

Severity ?

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

Summary

In the Linux kernel, the following vulnerability has been resolved: net: usb: cdc_ncm: add ndpoffset to NDP32 nframes bounds check The same bounds-check bug fixed for NDP16 in the previous patch also exists in cdc_ncm_rx_verify_ndp32(). The DPE array size is validated against the total skb length without accounting for ndpoffset, allowing out-of-bounds reads when the NDP32 is placed near the end of the NTB. Add ndpoffset to the nframes bounds check and use struct_size_t() to express the NDP-plus-DPE-array size more clearly. Compile-tested only.

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/125f932a76a97904ef8a555f1dd53e5d0e288c54	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/77914255155e68a20aa41175edeecf8121dac391	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/a5bd5a2710310c965ea4153cba4210988a3454e2	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/af0d1613d6751489dbf9f69aac1123f0b1e566e5	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/de70da1fb1d152e981ecb3157f7ec2b633005c16	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	*
linux	linux_kernel	5.7
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
linux	linux_kernel	7.0

JSON

To clipboard

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    }
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  "id": "CVE-2026-23447",
  "lastModified": "2026-04-23T20:56:17.963",
  "metrics": {
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          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
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CVE-2026-23447 (GCVE-0-2026-23447)

Vulnerability from cvelistv5 – Published: 2026-04-03 15:15 – Updated: 2026-04-13 06:07

Title

net: usb: cdc_ncm: add ndpoffset to NDP32 nframes bounds check

Summary

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/125f932a76a97904e…
	https://git.kernel.org/stable/c/af0d1613d6751489d…
	https://git.kernel.org/stable/c/a5bd5a2710310c965…
	https://git.kernel.org/stable/c/de70da1fb1d152e98…
	https://git.kernel.org/stable/c/77914255155e68a20…

Impacted products

Vendor

Product

Version

Linux

Affected: 0fa81b304a7973a499f844176ca031109487dd31 , < 125f932a76a97904ef8a555f1dd53e5d0e288c54 (git)
Affected: 0fa81b304a7973a499f844176ca031109487dd31 , < af0d1613d6751489dbf9f69aac1123f0b1e566e5 (git)
Affected: 0fa81b304a7973a499f844176ca031109487dd31 , < a5bd5a2710310c965ea4153cba4210988a3454e2 (git)
Affected: 0fa81b304a7973a499f844176ca031109487dd31 , < de70da1fb1d152e981ecb3157f7ec2b633005c16 (git)
Affected: 0fa81b304a7973a499f844176ca031109487dd31 , < 77914255155e68a20aa41175edeecf8121dac391 (git)
Affected: 8cf7db86a8984ffa3a3388a8df12bc0aa4c79bd7 (git)
Affected: 4ca8b8855264cf1439cdab3da7049bd1e3c2a9e6 (git)
Affected: a270ca35a9499b58366d696d3290eaa4697a42db (git)

Linux

Affected: 5.7
Unaffected: 0 , < 5.7 (semver)
Unaffected: 6.6.130 , ≤ 6.6.* (semver)
Unaffected: 6.12.78 , ≤ 6.12.* (semver)
Unaffected: 6.18.20 , ≤ 6.18.* (semver)
Unaffected: 6.19.10 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

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          "programFiles": [
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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-2026-23447

CVE-2026-23447 (GCVE-0-2026-23447)

Tags

Sightings

Nomenclature