CVE-2022-49089

Local privilege escalation via unlocked RDMA error handling

Published Feb 26, 2025 · Updated Aug 5, 2026

Race condition in affected Linux kernel releases allows local users to corrupt memory or crash the host through RDMA loopback. The rvt_ruc_loopback path calls rvt_error_qp without holding r_lock, allowing concurrent receive-side handling to corrupt shared memory-region state. Exploitation requires local access to an RDMA uverbs device and can disclose or overwrite memory, elevate privileges, or panic the kernel.

CVSS severity7.8
High
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

Race condition in affected Linux kernel releases allows local users to corrupt memory or crash the host through RDMA loopback. The rvt_ruc_loopback path calls rvt_error_qp without holding r_lock, allowing concurrent receive-side handling to corrupt shared memory-region state. Exploitation requires local access to an RDMA uverbs device and can disclose or overwrite memory, elevate privileges, or panic the kernel.

The record

CVE
CVE-2022-49089
Published
Feb 26, 2025
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-362, CWE-667, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 26, 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=25636de95557a95d54ac30be94af3748345a0a90
  2. Affected versionversion=5.0.4 <5.1
  3. Affected versionversion=5.1
  4. Affected versionversion=d757c60eca9b22f4d108929a24401e0fdecda0b1 <43c2d7890ecabe527448a6c391fb2d9a5e6bbfe0
  5. Affected versionversion=d757c60eca9b22f4d108929a24401e0fdecda0b1 <4d809f69695d4e7d1378b3a072fa9aef23123018
  6. Affected versionversion=d757c60eca9b22f4d108929a24401e0fdecda0b1 <57800cc36e55db0547461c49acf5cd84c0f502b0
  7. Affected versionversion=d757c60eca9b22f4d108929a24401e0fdecda0b1 <77ffb2495a41098f9d6a14f8aefde3188da75944
  8. Affected versionversion=d757c60eca9b22f4d108929a24401e0fdecda0b1 <8a50937227c385a477177c9ffa122b4230e40666
  9. Affected versionversion=d757c60eca9b22f4d108929a24401e0fdecda0b1 <92f1947c0d26060e978b3a9f21f32ce7c8c9cca3

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=25636de95557a95d54ac30be94af3748345a0a90; version=5.0.4 <5.1; version=5.1; version=d757c60eca9b22f4d108929a24401e0fdecda0b1 <43c2d7890ecabe527448a6c391fb2d9a5e6bbfe0; version=d757c60eca9b22f4d108929a24401e0fdecda0b1 <4d809f69695d4e7d1378b3a072fa9aef23123018; version=d757c60eca9b22f4d108929a24401e0fdecda0b1 <57800cc36e55db0547461c49acf5cd84c0f502b0; version=d757c60eca9b22f4d108929a24401e0fdecda0b1 <77ffb2495a41098f9d6a14f8aefde3188da75944; version=d757c60eca9b22f4d108929a24401e0fdecda0b1 <8a50937227c385a477177c9ffa122b4230e40666; version=d757c60eca9b22f4d108929a24401e0fdecda0b1 <92f1947c0d26060e978b3a9f21f32ce7c8c9cca3

Published CVSS scores

4.7NIST NVDCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
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-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CWE-667Improper Locking
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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