SB20260916104 - Out-of-bounds write in Linux kernel scsi driver
Published: September 16, 2026
Security Bulletin ID
SB20260916104
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Out-of-bounds write (CVE-ID: CVE-2026-90010)
CWE-ID: CWE-787 - Out-of-bounds write
CVSSv4: 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]
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.
Remediation
Install update from vendor's website.