EUVD-2026-18694
GHSA-vf6v-fqr8-5xhj
Lifecycle Timeline
3Description
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.
Analysis
Buffer overflow in Linux kernel cdc_ncm driver allows out-of-bounds memory reads when processing malformed USB CDC NCM (Network Control Model) packets with NDP32 (Normal Data Packet) headers positioned near the end of the network transfer buffer. The vulnerability exists in cdc_ncm_rx_verify_ndp32() where bounds checking fails to account for the ndpoffset value when validating the DPE (Data Packet Element) array size, potentially enabling local denial-of-service or information disclosure on systems with affected USB CDC NCM network devices. …
Sign in for full analysis, threat intelligence, and remediation guidance.
Priority Score
Share
External POC / Exploit Code
Leaving vuln.today