RDMA/irdma: Replace waitqueue and flag with completion (CVE-2026-72494) | HOL Guard CVE

Critical · CVSS 9.8CVE-2026-72494

RDMA/irdma: Replace waitqueue and flag with completion

Answer in brief

CVE-2026-72494 records a Critical severity (CVSS 9.8) vulnerability in RDMA/irdma: Replace waitqueue and flag with completion. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 15, 2026Updated Sep 21, 2026Source checked Sep 29, 2026First seen by HOL Aug 15, 2026Material review Sep 21, 2026

Upstream Advisory

Key facts

Risk: Critical · CVSS 9.8
Exploitation: Not marked as known exploited
Affected software: 3 mapped packages or products
Fix availability: Available

Why this deserves its current priority

CVSS is 9.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=44d9e52977a1b90b0db1c7f8b197c218e9226520 <bde37aed0724c0139dea177f3aae8d989b6babb1 \|\| >=44d9e52977a1b90b0db1c7f8b197c218e9226520 <d9c8c45e6d2f438a3c8e643ae78b59454fa0fadd	bde37aed0724c0139dea177f3aae8d989b6babb1, d9c8c45e6d2f438a3c8e643ae78b59454fa0fadd
Linux/Linuxgeneric	5.14	Not reported
Linux/Linuxgeneric	>=44d9e52977a1b90b0db1c7f8b197c218e9226520 <706591cccdd3ac2c0ddc8c2ed6c89a6be9865826 \|\| >=44d9e52977a1b90b0db1c7f8b197c218e9226520 <bde37aed0724c0139dea177f3aae8d989b6babb1 \|\| >=44d9e52977a1b90b0db1c7f8b197c218e9226520 <d9c8c45e6d2f438a3c8e643ae78b59454fa0fadd	706591cccdd3ac2c0ddc8c2ed6c89a6be9865826, bde37aed0724c0139dea177f3aae8d989b6babb1, d9c8c45e6d2f438a3c8e643ae78b59454fa0fadd

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to bde37aed0724c0139dea177f3aae8d989b6babb1; Linux/Linux to 706591cccdd3ac2c0ddc8c2ed6c89a6be9865826 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 21, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 15, 2026

Sources and claim methodology

Upstream source 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 <[email protected]> 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.

Quoted source text, attributed separately from HOL analysis.