SB20260626213 - Integer overflow in Linux kernel infiniband core driver

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Main Vulnerability Database SB20260626213

SB20260626213 - Integer overflow in Linux kernel infiniband core driver

Published: June 26, 2026

Security Bulletin ID SB20260626213
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Denial of service

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Integer overflow (CVE-ID: CVE-2026-53133)

CWE-ID: CWE-190 - Integer overflow

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 integer overflow in __rdma_block_iter_next() in the RDMA umem block iterator when reassembling split scatter-gather entries during IOMMU-backed mapping linearization. A local user can trigger processing of a very large mapped block to cause a denial of service.

The issue occurs for block sizes greater than or equal to 4G when a single large block is split across multiple scatter-gather entries.


Remediation

Install update from vendor's website.

References