Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: scsi: bsg: Fix TOCTOU in io_uring passthrough command setup scsi_bsg_uring_cmd() reads bsg_uring_cmd from the shared mmap'd SQE. Userspace can change a field after we check it and before we use it. request_len is the sharp case: it can grow past sizeof(scmd->cmnd) after the bound check and overflow scmd->cmnd in copy_from_user(). READ_ONCE() the SQE fields we check or use into locals before use.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 7b6d3255e7f8c6df2d21504c47808e3ce84649ac before f033530105aa73d82c121d54b57f358e4865d2f4; affected 7b6d3255e7f8c6df2d21504c47808e3ce84649ac before 4b3c5965fca99f62d31c963294bd5b23cc488e97 |
| Linux / Linux | affected 7.1; unaffected 0 before 7.1; unaffected 7.2.5 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.