7.8

CVE-2026-23447

net: usb: cdc_ncm: add ndpoffset to NDP32 nframes bounds check

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 4.14.317 < 4.15
Linux ≫ Linux Kernel Version >= 4.19.285 < 4.20
Linux ≫ Linux Kernel Version >= 5.4.245 < 5.5
Linux ≫ Linux Kernel Version >= 5.7.1 < 6.6.130
Linux ≫ Linux Kernel Version >= 6.7 < 6.12.78
Linux ≫ Linux Kernel Version >= 6.13 < 6.18.20
Linux ≫ Linux Kernel Version >= 6.19 < 6.19.10
Linux ≫ Linux Kernel Version 5.7 Update -
Linux ≫ Linux Kernel Version 7.0 Update rc1
Linux ≫ Linux Kernel Version 7.0 Update rc2
Linux ≫ Linux Kernel Version 7.0 Update rc3
Linux ≫ Linux Kernel Version 7.0 Update rc4
Linux ≫ Linux Kernel Version 7.0 Update rc5
Linux ≫ Linux Kernel Version 7.0 Update rc6
Linux ≫ Linux Kernel Version 7.0 Update rc7
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.13% 0.028
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-129 Improper Validation of Array Index

The product uses untrusted input when calculating or using an array index, but the product does not validate or incorrectly validates the index to ensure the index references a valid position within the array.

https://git.kernel.org/stable/c/125f932a76a97904ef8a555f1dd53e5d0e288c54
Patch
https://git.kernel.org/stable/c/af0d1613d6751489dbf9f69aac1123f0b1e566e5
Patch
https://git.kernel.org/stable/c/a5bd5a2710310c965ea4153cba4210988a3454e2
Patch
https://git.kernel.org/stable/c/de70da1fb1d152e981ecb3157f7ec2b633005c16
Patch
https://git.kernel.org/stable/c/77914255155e68a20aa41175edeecf8121dac391
Patch
https://git.kernel.org/stable/c/baf246d6680befde2086b1df9eb3aaba3fb6853f