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NVD / CVE Program· CNA Linux

CVE-2026-72494: RDMA/irdma: Replace waitqueue and flag with completion

CriticalCVSS 9.8 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 39/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.52% (FIRST EPSS).
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • According to CISA the attack is automatable: targets can be found by mass scanning.
  • Fixed version: Linux Linux 4dcd5afcc3516b07f0a506c338a49bccfd24589b, 706591cccdd3ac2c0ddc8c2ed6c89a6be9865826, 7d89bff21c12e543d12ad70cb0103cf815891b24.

Low priority for now. Upgrade to Linux Linux 4dcd5afcc3516b07f0a506c338a49bccfd24589b, 706591cccdd3ac2c0ddc8c2ed6c89a6be9865826, 7d89bff21c12e543d12ad70cb0103cf815891b24 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

Published
Aug 15, 2026
Updated
Oct 30, 2026
EPSS
0.5% · 45th percentile
CWE
—

Report tools

JSON

Action score

39

Monitor

Low priority for now.

CVSS
39 / 40 · 9.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.5%

CISA SSVC decision

Exploitation
none
Automatable
yes
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · Linux
9.8
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-72494

When you'll hear from us

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  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 5.14affected
    • 44d9e52977a1b90b0db1c7f8b197c218e9226520 and later · before 4dcd5afcc3516b07f0a506c338a49bccfd24589baffected · git
    • 44d9e52977a1b90b0db1c7f8b197c218e9226520 and later · before 7d89bff21c12e543d12ad70cb0103cf815891b24affected · git
    • 44d9e52977a1b90b0db1c7f8b197c218e9226520 and later · before 8de303efe2ff4fcbf240dfc6eb3469e1e8f18a3faffected · git
    • 44d9e52977a1b90b0db1c7f8b197c218e9226520 and later · before 706591cccdd3ac2c0ddc8c2ed6c89a6be9865826affected · git
    • 44d9e52977a1b90b0db1c7f8b197c218e9226520 and later · before bde37aed0724c0139dea177f3aae8d989b6babb1affected · git
    • 44d9e52977a1b90b0db1c7f8b197c218e9226520 and later · before d9c8c45e6d2f438a3c8e643ae78b59454fa0faddaffected · git
    • before 5.14not affected · semver
    • 6.1.191 and later · up to and including 6.1.*not affected · semver
    • 6.6.160 and later · up to and including 6.6.*not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxfrom 0—
Debian:13linuxbefore 6.12.115-26.12.115-2
Debian:14linuxbefore 7.1.5-17.1.5-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2026-72491Aug 15, 2026 · net/9p: fix race condition on rdma->state in trans_rdma.c
    39Monitor
  • ← EarlierCVE-2026-72493Aug 15, 2026 · net: serialize netif_running() check in enqueue_to_backlog()
    39Monitor
  • Later →CVE-2026-72495Aug 15, 2026 · RDMA/bnxt_re: Avoid repeated requests to allocate WC pages
    37Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux4dcd5afcc3516b07f0a506c338a49bccfd24589bVendor (CNA)
Linux Linux706591cccdd3ac2c0ddc8c2ed6c89a6be9865826Vendor (CNA)
Linux Linux7d89bff21c12e543d12ad70cb0103cf815891b24Vendor (CNA)
Linux Linux8de303efe2ff4fcbf240dfc6eb3469e1e8f18a3fVendor (CNA)
Linux Linuxbde37aed0724c0139dea177f3aae8d989b6babb1Vendor (CNA)
Linux Linuxd9c8c45e6d2f438a3c8e643ae78b59454fa0faddVendor (CNA)
debian:linux6.12.115-2 · Debian:13Package registry (OSV)
debian:linux7.1.5-1 · Debian:14Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Not on record for this CVE: patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

—

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

References

Show all references (5 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records