CVE-2022-49613

Availability disruption via console handover PM underflow

Published Feb 26, 2025 · Updated May 11, 2026

Reference-count error in the Linux kernel 8250 console handover allows local users to disrupt system availability. The setup path omits pm_runtime_get_sync() before the port device exists, but the exit path later calls pm_runtime_put_sync() with a zero usage count. An enabled 8250 console and subsequent driver handover are required; the observed result is a runtime-PM underflow warning.

CVSS severity5.5
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reference-count error in the Linux kernel 8250 console handover allows local users to disrupt system availability. The setup path omits pm_runtime_get_sync() before the port device exists, but the exit path later calls pm_runtime_put_sync() with a zero usage count. An enabled 8250 console and subsequent driver handover are required; the observed result is a runtime-PM underflow warning.

The record

CVE
CVE-2022-49613
Published
Feb 26, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 26, 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=5.7
  2. Affected versionversion=bedb404e91bb2908d9921fc736a518a9d89525fc <190ce5cdc55d1b66ea582ac2be6fd5a72e3cc486
  3. Affected versionversion=bedb404e91bb2908d9921fc736a518a9d89525fc <5df66302f03f87ae8953785a882d78e911f00c55
  4. Affected versionversion=bedb404e91bb2908d9921fc736a518a9d89525fc <d9cb6fabc90102f9e61fe35bd0160db88f4f53b4
  5. Affected versionversion=bedb404e91bb2908d9921fc736a518a9d89525fc <f9b11229b79c0fb2100b5bb4628a101b1d37fbf6

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.7; version=bedb404e91bb2908d9921fc736a518a9d89525fc <190ce5cdc55d1b66ea582ac2be6fd5a72e3cc486; version=bedb404e91bb2908d9921fc736a518a9d89525fc <5df66302f03f87ae8953785a882d78e911f00c55; version=bedb404e91bb2908d9921fc736a518a9d89525fc <d9cb6fabc90102f9e61fe35bd0160db88f4f53b4; version=bedb404e91bb2908d9921fc736a518a9d89525fc <f9b11229b79c0fb2100b5bb4628a101b1d37fbf6

Published CVSS scores

5.5NIST NVDCVSS: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 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

T1499.004Endpoint Denial of Service: Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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