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

MITRE NVD CVE.ORG Print: PDF PDF

Summary

CVECVE-2026-23447
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-03 16:16:30 UTC
Updated2026-04-03 16:16:30 UTC
DescriptionIn 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.

Risk And Classification

EPSS: 0.000180000 probability, percentile 0.046090000 (date 2026-04-04)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 0fa81b304a7973a499f844176ca031109487dd31 125f932a76a97904ef8a555f1dd53e5d0e288c54 git Not specified
CNA Linux Linux affected 0fa81b304a7973a499f844176ca031109487dd31 af0d1613d6751489dbf9f69aac1123f0b1e566e5 git Not specified
CNA Linux Linux affected 0fa81b304a7973a499f844176ca031109487dd31 a5bd5a2710310c965ea4153cba4210988a3454e2 git Not specified
CNA Linux Linux affected 0fa81b304a7973a499f844176ca031109487dd31 de70da1fb1d152e981ecb3157f7ec2b633005c16 git Not specified
CNA Linux Linux affected 0fa81b304a7973a499f844176ca031109487dd31 77914255155e68a20aa41175edeecf8121dac391 git Not specified
CNA Linux Linux affected 8cf7db86a8984ffa3a3388a8df12bc0aa4c79bd7 git Not specified
CNA Linux Linux affected 4ca8b8855264cf1439cdab3da7049bd1e3c2a9e6 git Not specified
CNA Linux Linux affected a270ca35a9499b58366d696d3290eaa4697a42db git Not specified
CNA Linux Linux affected 5.7 Not specified
CNA Linux Linux unaffected 5.7 semver Not specified
CNA Linux Linux unaffected 6.6.130 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.78 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.20 6.18.* semver Not specified
CNA Linux Linux unaffected 6.19.10 6.19.* semver Not specified
CNA Linux Linux unaffected 7.0-rc5 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/125f932a76a97904ef8a555f1dd53e5d0e288c54 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/de70da1fb1d152e981ecb3157f7ec2b633005c16 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/a5bd5a2710310c965ea4153cba4210988a3454e2 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/af0d1613d6751489dbf9f69aac1123f0b1e566e5 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/77914255155e68a20aa41175edeecf8121dac391 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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