CVE-2026-23447

ADVISORY - nist

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.

EPSS Score⁠: 0.00129 (0.029)

Common Weakness Enumeration (CWE)

ADVISORY - nist

CWE-129⁠

Improper Validation of Array Index

ADVISORY - redhat

CWE-131⁠

Incorrect Calculation of Buffer Size

Impacted images

Advisories

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