Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: vhost-scsi: Validate T10 PI scatterlist counts When T10 PI is negotiated, vhost-scsi splits protection bytes from the data iterator before mapping the request scatterlists. A malformed request can claim protection bytes that cover or exceed the full payload length. The former leaves no data bytes to map, while the latter underflows exp_data_len before advancing the iterator. Both cases can let a zero data SGL count reach sg_alloc_table_chained(), which triggers BUG_ON(!nents). Reject protection lengths that cover or exceed the payload before subtracting prot_bytes and advancing the iterator. Also propagate negative errors from the protection SGL calculation before calling the allocator, matching the data SGL path.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected bca939d5bcd00d6faea99c47eafd60bed573ef03 before 2417a498cf3fe64d06faf87e236eda98dd4f04e0; affected bca939d5bcd00d6faea99c47eafd60bed573ef03 before f8fe3f8d342da750dd10361bf66009fd3072926b; affected bca939d5bcd00d6faea99c47eafd60bed573ef03 before d876c493fc4b811941bfeb4c80beb2dfc4bf025e |
| Linux / Linux | affected 6.15; unaffected 0 before 6.15; unaffected 6.18.45 through 6.18.*; unaffected 7.1.9 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.