CVE-2026-90009

Published: Set 16, 2026 Last Modified: Set 16, 2026
ExploitDB:
Other exploit source:
Google Dorks:
HIGH 7,8
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Attack Vector: local
Attack Complexity: low
Privileges Required: low
User Interaction: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high

Description

AI Translation Available

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.

https://git.kernel.org/stable/c/4b3c5965fca99f62d31c963294b…
https://git.kernel.org/stable/c/4b3c5965fca99f62d31c963294bd5b23cc488e97
https://git.kernel.org/stable/c/f033530105aa73d82c121d54b57…
https://git.kernel.org/stable/c/f033530105aa73d82c121d54b57f358e4865d2f4