CVE-2022-49798

Local kernel crash via premature eprobe trigger

Published May 1, 2025 · Updated May 11, 2026

Race condition in Linux kernel eprobes from 5.15 allows local users to crash the kernel by triggering an event before its record exists. The tracing code enables an eprobe before setting the flag that defers trigger execution, allowing the probe to dereference a NULL event record. An enabled eprobe and a concurrent event trigger are required; successful exploitation causes a kernel crash without reported data access.

CVSS severity4.7
Medium
EPSS probability0.14%
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 Linux kernel eprobes from 5.15 allows local users to crash the kernel by triggering an event before its record exists. The tracing code enables an eprobe before setting the flag that defers trigger execution, allowing the probe to dereference a NULL event record. An enabled eprobe and a concurrent event trigger are required; successful exploitation causes a kernel crash without reported data access.

The record

CVE
CVE-2022-49798
Published
May 1, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-362, 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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=5.15
  2. Affected versionversion=7491e2c442781a1860181adb5ab472a52075f393 <7291dec4f2d17a2d3fd1f789fb41e58476539f21
  3. Affected versionversion=7491e2c442781a1860181adb5ab472a52075f393 <73f5191467ffe3af82f27fe0ea6a8c2fac724d3f
  4. Affected versionversion=7491e2c442781a1860181adb5ab472a52075f393 <94eedf3dded5fb472ce97bfaf3ac1c6c29c35d26

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.15; version=7491e2c442781a1860181adb5ab472a52075f393 <7291dec4f2d17a2d3fd1f789fb41e58476539f21; version=7491e2c442781a1860181adb5ab472a52075f393 <73f5191467ffe3af82f27fe0ea6a8c2fac724d3f; version=7491e2c442781a1860181adb5ab472a52075f393 <94eedf3dded5fb472ce97bfaf3ac1c6c29c35d26

Published CVSS scores

4.7NIST NVDCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5Amazon LinuxCVSS: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-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
T1499.004Application 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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