CVE-2026-23447net: usb: cdc_ncm: add ndpoffset to NDP32 nframes bounds check
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 7.8 HIGH (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Modified
- Record last updated
- Sep 14, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 0fa81b304a7973a499f844176ca031109487dd31 before baf246d6680befde2086b1df9eb3aaba3fb6853f; from 0fa81b304a7973a499f844176ca031109487dd31 before 125f932a76a97904ef8a555f1dd53e5d0e288c54; from 0fa81b304a7973a499f844176ca031109487dd31 before af0d1613d6751489dbf9f69aac1123f0b1e566e5; from 0fa81b304a7973a499f844176ca031109487dd31 before a5bd5a2710310c965ea4153cba4210988a3454e2; from 0fa81b304a7973a499f844176ca031109487dd31 before de70da1fb1d152e981ecb3157f7ec2b633005c16; from 0fa81b304a7973a499f844176ca031109487dd31 before 77914255155e68a20aa41175edeecf8121dac391; 8cf7db86a8984ffa3a3388a8df12bc0aa4c79bd7; 4ca8b8855264cf1439cdab3da7049bd1e3c2a9e6; and 4 more ranges | CNA record |
linux linux_kernel linux:linux_kernel | from 4.14.317 before 4.15; from 4.19.285 before 4.20; from 5.4.245 before 5.5; from 5.7.1 before 6.6.130; from 6.7 before 6.12.78; from 6.13 before 6.18.20; from 6.19 before 6.19.10; 5.7; and 7 more ranges | NVD |
References
- https://git.kernel.org/stable/c/baf246d6680befde2086b1df9eb3aaba3fb6853f
- https://git.kernel.org/stable/c/125f932a76a97904ef8a555f1dd53e5d0e288c54patch
- https://git.kernel.org/stable/c/af0d1613d6751489dbf9f69aac1123f0b1e566e5patch
- https://git.kernel.org/stable/c/a5bd5a2710310c965ea4153cba4210988a3454e2patch
- https://git.kernel.org/stable/c/de70da1fb1d152e981ecb3157f7ec2b633005c16patch
- https://git.kernel.org/stable/c/77914255155e68a20aa41175edeecf8121dac391patch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.