CVE-2022-49823

Kernel crash via unchecked device-addition failure

Published May 1, 2025 · Updated May 11, 2026

NULL pointer dereference in Linux kernel 2.6.37 and later affected branches allows local users to crash the kernel during module removal. ata_tdev_add() ignores a failed transport_add_device() call, leaving teardown to pass an unregistered device to transport_remove_device(). Triggering the crash requires local access, a prior device-addition failure, and subsequent removal of the affected ATA module.

CVSS severity5.5
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in Linux kernel 2.6.37 and later affected branches allows local users to crash the kernel during module removal. ata_tdev_add() ignores a failed transport_add_device() call, leaving teardown to pass an unregistered device to transport_remove_device(). Triggering the crash requires local access, a prior device-addition failure, and subsequent removal of the affected ATA module.

The record

CVE
CVE-2022-49823
Published
May 1, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, 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

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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=2.6.37
  2. Affected versionversion=d9027470b88631d0956ac37cdadfdeb9cdcf2c99 <1ff36351309e3eadcff297480baf4785e726de9b
  3. Affected versionversion=d9027470b88631d0956ac37cdadfdeb9cdcf2c99 <ef2ac07ab83163b9a53f45da20e14302591ad9cc
  4. Affected versionversion=d9027470b88631d0956ac37cdadfdeb9cdcf2c99 <f23058dc2398db1d8faca9a2b1ce30b85cdd8b22
  5. Affected versionversion=d9027470b88631d0956ac37cdadfdeb9cdcf2c99 <f54331962883f4fc4bf5e487e6e7cf07c4567fef

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2.6.37; version=d9027470b88631d0956ac37cdadfdeb9cdcf2c99 <1ff36351309e3eadcff297480baf4785e726de9b; version=d9027470b88631d0956ac37cdadfdeb9cdcf2c99 <ef2ac07ab83163b9a53f45da20e14302591ad9cc; version=d9027470b88631d0956ac37cdadfdeb9cdcf2c99 <f23058dc2398db1d8faca9a2b1ce30b85cdd8b22; version=d9027470b88631d0956ac37cdadfdeb9cdcf2c99 <f54331962883f4fc4bf5e487e6e7cf07c4567fef

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 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-476NULL Pointer Dereference
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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