CVE-2026-72494
Received Received - Intake

RDMA/irdma Completion Replacement Fixes Race Condition

Publication date: 2026-08-15

Last updated on: 2026-08-15

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: RDMA/irdma: Replace waitqueue and flag with completion The driver previously used a waitqueue along with an explicit request_done flag, but without proper barriers around request_done. An earlier patch by Gui-Dong Han <hanguidong02@gmail.com> attempted to fix this by adding the missing memory barriers. Rather than adding the barriers, this patch replaces the waitqueue+flag with a completion, which is designed for this exact purpose.

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Meta Information

Published
2026-08-15
Last Modified
2026-08-15
Generated
2026-08-15
AI Q&A
2026-08-15
EPSS Evaluated
N/A
NVD
CVE-2026-72494
EUVD
EUVD-2026-59393

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *

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Exploitability

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KEV
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This vulnerability in the Linux kernel involves a driver (RDMA/irdma) that previously used a waitqueue and a flag without proper memory barriers. A patch replaced this with a completion mechanism, which is better suited for synchronization tasks.

Detection Guidance

This vulnerability is specific to the RDMA/irdma driver in the Linux kernel. Detection requires checking the kernel version and loaded modules for the affected driver. Use commands like 'uname -r' to check the kernel version and 'lsmod | grep irdma' to verify if the driver is loaded.

Impact Analysis

The vulnerability could lead to race conditions in RDMA operations, potentially causing system instability or unexpected behavior in applications relying on the irdma driver.

Mitigation Strategies

Update the Linux kernel to a patched version that includes the fix for this vulnerability. Monitor vendor advisories for kernel updates and apply them promptly. If using the irdma driver, ensure the updated kernel is rebooted to activate the changes.

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