SB20260528172 - Out-of-bounds write in Linux kernel infiniband core driver
Published: May 28, 2026
Security Bulletin ID
SB20260528172
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Out-of-bounds write (CVE-ID: CVE-2026-45898)
CWE-ID: CWE-787 - Out-of-bounds write
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to memory corruption in the RDMA/iwcm workqueue handling logic when processing queued work items. A local user can trigger repeated work submissions to cause a denial of service.
The issue was observed during stress testing with ucmatose in iWARP mode.
Remediation
Install update from vendor's website.