CVE WatchSep 14, 2026

CVE-2026-23447

In the Linux kernel, the following vulnerability has been resolved: net: usb: cdc_ncm: add ndpoffset to NDP32 nframes bounds check The sam

CVSS

7.8

High

EPSS

0.1%

KEV

—

Exploit Today

0-100

Published: Apr 3, 2026 · Last modified: Sep 14, 2026 · CWE-129

EPSS · 30d

0.1%EPSS · 30 days0.1%

2026-09-272026-10-25

Technical 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.

Official references

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