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.

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
0fa81b304a7973a499f844176ca031109487dd31 affected < 125f932a76a97904ef8a555f1dd53e5d0e288c54
0fa81b304a7973a499f844176ca031109487dd31 affected < af0d1613d6751489dbf9f69aac1123f0b1e566e5
0fa81b304a7973a499f844176ca031109487dd31 affected < a5bd5a2710310c965ea4153cba4210988a3454e2
0fa81b304a7973a499f844176ca031109487dd31 affected < de70da1fb1d152e981ecb3157f7ec2b633005c16
0fa81b304a7973a499f844176ca031109487dd31 affected < 77914255155e68a20aa41175edeecf8121dac391
8cf7db86a8984ffa3a3388a8df12bc0aa4c79bd7 affected —
4ca8b8855264cf1439cdab3da7049bd1e3c2a9e6 affected —
a270ca35a9499b58366d696d3290eaa4697a42db affected —
Linux Linux affected
Version Status Constraints
5.7 affected —
0 unaffected < 5.7
6.6.130 unaffected ≤ 6.6.*
6.12.78 unaffected ≤ 6.12.*
6.18.20 unaffected ≤ 6.18.*
6.19.10 unaffected ≤ 6.19.*
7.0-rc5 unaffected ≤ *

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/125f932a76a97904ef8a555f1dd53e5d0e288c54 cve-icon cve-icon
https://git.kernel.org/stable/c/77914255155e68a20aa41175edeecf8121dac391 cve-icon cve-icon
https://git.kernel.org/stable/c/a5bd5a2710310c965ea4153cba4210988a3454e2 cve-icon cve-icon
https://git.kernel.org/stable/c/af0d1613d6751489dbf9f69aac1123f0b1e566e5 cve-icon cve-icon
https://git.kernel.org/stable/c/de70da1fb1d152e981ecb3157f7ec2b633005c16 cve-icon cve-icon
History

Fri, 03 Apr 2026 16:30:00 +0000

Type Values Removed Values Added
Description 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.
Title net: usb: cdc_ncm: add ndpoffset to NDP32 nframes bounds check
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-04-03T15:15:30.495Z

Reserved: 2026-01-13T15:37:46.019Z

Link: CVE-2026-23447

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-04-03T16:16:30.663

Modified: 2026-04-03T16:16:30.663

Link: CVE-2026-23447

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses

No weakness.