CVE-2026-23448

The record

In the Linux kernel, the following vulnerability has been resolved: net: usb: cdc_ncm: add ndpoffset to NDP16 nframes bounds check cdc_ncm_rx_verify_ndp16() validates that the NDP header and its DPE entries fit within the skb. The first check correctly accounts for ndpoffset: if ((ndpoffset + sizeof(struct usb_cdc_ncm_ndp16)) > skb_in->len) but the second check omits it: if ((sizeof(struct usb_cdc_ncm_ndp16) + ret * (sizeof(struct usb_cdc_ncm_dpe16))) > skb_in->len) This validates the DPE array size against the total skb length as if the NDP were at offset 0, rather than at ndpoffset. When the NDP is placed near the end of the NTB (large wNdpIndex), the DPE entries can extend past the skb data buffer even though the check passes. cdc_ncm_rx_fixup() then reads out-of-bounds memory when iterating the DPE array. Add ndpoffset to the nframes bounds check and use struct_size_t() to express the NDP-plus-DPE-array size more clearly.

Affected packages

Related vulnerabilities

• CVE-2026-96675 alsa-lib through 1.2.16.1 contains a denial of service vulnerability in the multi PCM… CWE-129
• CVE-2026-84445 gRPC-Go is the Go language implementation of gRPC. CWE-129
• CVE-2026-88052 Tesseract is an open source OCR engine. CWE-129
• CVE-2026-87500 Improper validation of array index in ANGLE in Google Chrome prior to 153.0.8010.36… CWE-129
• CVE-2026-0799 In BPF instructions that load/store a value from/to a scratch memory register the… CWE-129
• CVE-2026-57159 PJSIP is a free and open source multimedia communication library written in C. CWE-129
• CVE-2026-85084 Out-of-bounds Write and Improper Validation of Array Index vulnerability in Samsung Open… CWE-129
• CVE-2023-31308 A malicious virtual function can invoke the certain command handlers in the SMU, causing… CWE-129