Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 0fa81b304a7973a499f844176ca031109487dd31 before baf246d6680befde2086b1df9eb3aaba3fb6853f; affected 0fa81b304a7973a499f844176ca031109487dd31 before 125f932a76a97904ef8a555f1dd53e5d0e288c54; affected 0fa81b304a7973a499f844176ca031109487dd31 before af0d1613d6751489dbf9f69aac1123f0b1e566e5; affected 0fa81b304a7973a499f844176ca031109487dd31 before a5bd5a2710310c965ea4153cba4210988a3454e2; affected 0fa81b304a7973a499f844176ca031109487dd31 before de70da1fb1d152e981ecb3157f7ec2b633005c16; affected 0fa81b304a7973a499f844176ca031109487dd31 before 77914255155e68a20aa41175edeecf8121dac391; affected 8cf7db86a8984ffa3a3388a8df12bc0aa4c79bd7; affected 4ca8b8855264cf1439cdab3da7049bd1e3c2a9e6; affected a270ca35a9499b58366d696d3290eaa4697a42db; affected 4.14.317 before 4.15; affected 4.19.285 before 4.20; affected 5.4.245 before 5.5 |
| Linux / Linux | affected 5.7; unaffected 0 before 5.7; unaffected 6.1.188 through 6.1.*; unaffected 6.6.130 through 6.6.*; unaffected 6.12.78 through 6.12.*; unaffected 6.18.20 through 6.18.*; unaffected 6.19.10 through 6.19.*; unaffected 7.0 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/baf246d6680befde2086b1df9eb3aaba3fb6853f
- https://git.kernel.org/stable/c/125f932a76a97904ef8a555f1dd53e5d0e288c54
- https://git.kernel.org/stable/c/af0d1613d6751489dbf9f69aac1123f0b1e566e5
- https://git.kernel.org/stable/c/a5bd5a2710310c965ea4153cba4210988a3454e2
- https://git.kernel.org/stable/c/de70da1fb1d152e981ecb3157f7ec2b633005c16
- https://git.kernel.org/stable/c/77914255155e68a20aa41175edeecf8121dac391