CVE-2022-50137

Kernel control-flow hijack via CQ teardown race

Published Jun 18, 2025 · Updated Aug 5, 2026

Use-after-free in the irdma driver in Linux allows local users to corrupt kernel memory during completion-queue teardown. The irdma_destroy_cq path frees CQ resources before irdma_sc_cleanup_ceqes drains queued events under cq_lock, allowing an interrupt to process freed memory. An unprivileged process with an RDMA verbs context can race CQ destruction against pending completions, enabling kernel reads, writes, control-flow hijacking, or a panic.

CVSS severity7.8
High
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in the irdma driver in Linux allows local users to corrupt kernel memory during completion-queue teardown. The irdma_destroy_cq path frees CQ resources before irdma_sc_cleanup_ceqes drains queued events under cq_lock, allowing an interrupt to process freed memory. An unprivileged process with an RDMA verbs context can race CQ destruction against pending completions, enabling kernel reads, writes, control-flow hijacking, or a panic.

The record

CVE
CVE-2022-50137
Published
Jun 18, 2025
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-416, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 18, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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=5.14
  2. Affected versionversion=b48c24c2d710cf34810c555dcef883a3d35a9c08 <0abf2eef80295923b819ce89ff9edc1fe61be17c
  3. Affected versionversion=b48c24c2d710cf34810c555dcef883a3d35a9c08 <350ac793a03c8a30a3f2b27fc282cd1c67070763
  4. Affected versionversion=b48c24c2d710cf34810c555dcef883a3d35a9c08 <8ecef7890b3aea78c8bbb501a4b5b8134367b821
  5. Affected versionversion=b48c24c2d710cf34810c555dcef883a3d35a9c08 <92520864ef9f912f38b403d172a0ded020683d55

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.14; version=b48c24c2d710cf34810c555dcef883a3d35a9c08 <0abf2eef80295923b819ce89ff9edc1fe61be17c; version=b48c24c2d710cf34810c555dcef883a3d35a9c08 <350ac793a03c8a30a3f2b27fc282cd1c67070763; version=b48c24c2d710cf34810c555dcef883a3d35a9c08 <8ecef7890b3aea78c8bbb501a4b5b8134367b821; version=b48c24c2d710cf34810c555dcef883a3d35a9c08 <92520864ef9f912f38b403d172a0ded020683d55

Published CVSS scores

7.8kernel.orgCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free
T1068Exploitation for Privilege Escalation

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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