CVE-2025-37772

Kernel crash via RDMA work-item reinitialization race

Published May 1, 2025 · Updated May 11, 2026

Denial of service in the Linux kernel allows local users to crash the system by rapidly triggering consecutive RDMA network events. The cma_netevent_callback function reinitializes a shared net_work item before queued work has run, overwriting its pool-workqueue association and leading process_one_work to dereference a null pwq. Exploitation requires local low-privilege access and closely timed RDMA/CMA events; the documented result is a kernel crash, not data disclosure or modification.

CVSS severity5.5
Medium
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in the Linux kernel allows local users to crash the system by rapidly triggering consecutive RDMA network events. The cma_netevent_callback function reinitializes a shared net_work item before queued work has run, overwriting its pool-workqueue association and leading process_one_work to dereference a null pwq. Exploitation requires local low-privilege access and closely timed RDMA/CMA events; the documented result is a kernel crash, not data disclosure or modification.

The record

CVE
CVE-2025-37772
Published
May 1, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 1, 2025CVE publishedPublication date reported by the CVE source.
  2. May 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.0
  2. Affected versionversion=925d046e7e52c71c3531199ce137e141807ef740 <45f5dcdd049719fb999393b30679605f16ebce14
  3. Affected versionversion=925d046e7e52c71c3531199ce137e141807ef740 <51003b2c872c63d28bcf5fbcc52cf7b05615f7b7
  4. Affected versionversion=925d046e7e52c71c3531199ce137e141807ef740 <b172a4a0de254f1fcce7591833a9a63547c2f447
  5. Affected versionversion=925d046e7e52c71c3531199ce137e141807ef740 <c2b169fc7a12665d8a675c1ff14bca1b9c63fb9a
  6. Affected versionversion=925d046e7e52c71c3531199ce137e141807ef740 <d23fd7a539ac078df119707110686a5b226ee3bb

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.0; version=925d046e7e52c71c3531199ce137e141807ef740 <45f5dcdd049719fb999393b30679605f16ebce14; version=925d046e7e52c71c3531199ce137e141807ef740 <51003b2c872c63d28bcf5fbcc52cf7b05615f7b7; version=925d046e7e52c71c3531199ce137e141807ef740 <b172a4a0de254f1fcce7591833a9a63547c2f447; version=925d046e7e52c71c3531199ce137e141807ef740 <c2b169fc7a12665d8a675c1ff14bca1b9c63fb9a; version=925d046e7e52c71c3531199ce137e141807ef740 <d23fd7a539ac078df119707110686a5b226ee3bb

Published CVSS scores

5.5NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499.004Endpoint Denial of Service: Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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