Out-of-bounds write in Linux kernel - CVE-2026-90010
Published: September 16, 2026
Vulnerability identifier: #VU150279
CSH Severity: Low
CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-90010
CWE-ID: CWE-787
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to compromise confidentiality, integrity, and availability.
The vulnerability exists due to improper bounds checking in the SCSI BSG io_uring completion sense-data copy when copying SCSI sense data to a user response buffer. A local user can submit an io_uring command with a response buffer smaller than the returned sense data to overrun the buffer.
Affected software
Linux kernel
How to mitigate CVE-2026-90010
Install security update from vendor's repository.