CVE-2022-48930

Local service hang via ib_srp workqueue deadlock

Published Aug 22, 2024 · Updated May 11, 2026

Deadlock in the ib_srp RDMA initiator in affected Linux kernels from 3.8 through 5.16.11 allows local users to hang kernel work processing. During srp_remove_one teardown, the driver flushes system_long_wq after synchronizing removal work, allowing the flush to enter a dependency cycle. Reachability requires local low-privileged access and the ib_srp driver; the resulting deadlock interrupts kernel availability.

CVSS severity5.5
Medium
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Deadlock in the ib_srp RDMA initiator in affected Linux kernels from 3.8 through 5.16.11 allows local users to hang kernel work processing. During srp_remove_one teardown, the driver flushes system_long_wq after synchronizing removal work, allowing the flush to enter a dependency cycle. Reachability requires local low-privileged access and the ib_srp driver; the resulting deadlock interrupts kernel availability.

The record

CVE
CVE-2022-48930
Published
Aug 22, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-667, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 22, 2024CVE 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=3.8
  2. Affected versionversion=ef6c49d87c3418c442a22e55e3ce2f91b163d69e <081bdc9fe05bb23248f5effb6f811da3da4b8252
  3. Affected versionversion=ef6c49d87c3418c442a22e55e3ce2f91b163d69e <4752fafb461821f8c8581090c923ababba68c5bd
  4. Affected versionversion=ef6c49d87c3418c442a22e55e3ce2f91b163d69e <8cc342508f9e7fdccd2e9758ae9d52aff72dab7f
  5. Affected versionversion=ef6c49d87c3418c442a22e55e3ce2f91b163d69e <901206f71e6ad2b2e7accefc5199a438d173c25f
  6. Affected versionversion=ef6c49d87c3418c442a22e55e3ce2f91b163d69e <98d056603ce55ceb90631b3927151c190dfb1b27
  7. Affected versionversion=ef6c49d87c3418c442a22e55e3ce2f91b163d69e <99eb8d694174c777558dc902d575d1997d5ca650
  8. Affected versionversion=ef6c49d87c3418c442a22e55e3ce2f91b163d69e <c8b56e51aa91b8e7df3a98388dce3fdabd15c1d4
  9. Affected versionversion=ef6c49d87c3418c442a22e55e3ce2f91b163d69e <d7997d19dfa7001ca41e971cd9efd091bb195b51

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3.8; version=ef6c49d87c3418c442a22e55e3ce2f91b163d69e <081bdc9fe05bb23248f5effb6f811da3da4b8252; version=ef6c49d87c3418c442a22e55e3ce2f91b163d69e <4752fafb461821f8c8581090c923ababba68c5bd; version=ef6c49d87c3418c442a22e55e3ce2f91b163d69e <8cc342508f9e7fdccd2e9758ae9d52aff72dab7f; version=ef6c49d87c3418c442a22e55e3ce2f91b163d69e <901206f71e6ad2b2e7accefc5199a438d173c25f; version=ef6c49d87c3418c442a22e55e3ce2f91b163d69e <98d056603ce55ceb90631b3927151c190dfb1b27; version=ef6c49d87c3418c442a22e55e3ce2f91b163d69e <99eb8d694174c777558dc902d575d1997d5ca650; version=ef6c49d87c3418c442a22e55e3ce2f91b163d69e <c8b56e51aa91b8e7df3a98388dce3fdabd15c1d4; version=ef6c49d87c3418c442a22e55e3ce2f91b163d69e <d7997d19dfa7001ca41e971cd9efd091bb195b51

Published CVSS scores

5.5NIST National Vulnerability DatabaseCVSS: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.

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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-667Improper Locking
T1499Endpoint Denial of Service

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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