HIGH 7.8 NVD
CVE-2026-90009
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
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.
References
- https://git.kernel.org/stable/c/4b3c5965fca99f62d31c963294bd5b23cc488e97
- https://git.kernel.org/stable/c/f033530105aa73d82c121d54b57f358e4865d2f4
This high severity vulnerability with a CVSS score of 7.8 was published on 2026-09-16 via NVD.
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