CVE-2026-72496

Received Received - Intake

RDMA Memory Mapping Failure in Broadcom bnxt_re Driver

Publication date: 2026-08-15

Last updated on: 2026-08-17

Assigner: kernel.org

Description

In the Linux kernel, the following vulnerability has been resolved: RDMA/bnxt_re: Proper rollback if the ioremap fails bnxt_qplib_alloc_dpi returns success even if ioremap fails. Add the proper rollback when the ioremap fails and return -ENOMEM status.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-08-15

Last Modified

2026-08-17

Generated

2026-09-04

AI Q&A

2026-08-15

EPSS Evaluated

2026-09-03

NVD

CVE-2026-72496

EUVD

EUVD-2026-59395

Affected Vendors & Products

Vendor	Product	Version / Range
linux	linux_kernel	*
linux_kernel	linux_kernel	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This vulnerability in the Linux kernel involves improper handling when mapping device memory. The bnxt_qplib_alloc_dpi function incorrectly returns success even if the ioremap operation fails. This means the system may continue operating with invalid memory mappings, potentially leading to crashes or undefined behavior.

Detection Guidance

This vulnerability is specific to the Linux kernel's RDMA/bnxt_re driver and involves improper handling when ioremap fails. Detection requires checking kernel logs for related errors or examining the bnxt_re driver's behavior during initialization.

Impact Analysis

If exploited, this flaw could cause system instability, including kernel crashes or unexpected reboots. It may also lead to denial-of-service conditions or data corruption in RDMA (Remote Direct Memory Access) operations, affecting network performance and reliability.

Compliance Impact

This vulnerability does not directly affect compliance with GDPR, HIPAA, or similar standards. The issue is a local denial-of-service in the Linux kernel's RDMA driver due to improper error handling during ioremap failure, which could lead to system instability but does not involve data exposure or privacy violations.

Mitigation Strategies

Update the Linux kernel to a patched version where this issue is resolved. Monitor kernel logs for RDMA/bnxt_re driver errors during system boot or driver initialization.

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