CVE-2022-1973Public exploit

Kernel crash via uninitialized restart-page free

Published Aug 5, 2022 · Updated Aug 3, 2024

Use-after-free in NTFS3 journal replay in Linux Kernel 5.19 rc1 allows local users to crash the system through a low-memory error. During mount-time log replay, log_read_rst() returns ENOMEM before initializing restart_info, and cleanup passes its uninitialized r_page pointer to kfree(). Triggering the flaw requires local access and an NTFS journal replay under memory pressure; the result is a kernel crash and kernel-memory disclosure.

CVSS severity7.1
High
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in NTFS3 journal replay in Linux Kernel 5.19 rc1 allows local users to crash the system through a low-memory error. During mount-time log replay, log_read_rst() returns ENOMEM before initializing restart_info, and cleanup passes its uninitialized r_page pointer to kfree(). Triggering the flaw requires local access and an NTFS journal replay under memory pressure; the result is a kernel crash and kernel-memory disclosure.

The record

CVE
CVE-2022-1973
Published
Aug 5, 2022
Updated
Aug 3, 2024
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-416, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 5, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record 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=kernel 5.19 rc1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=kernel 5.19 rc1

Published CVSS scores

7.1NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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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 exploitPublished

Weakness, pattern, technique

CWE-416Use After Free
T1499.004Application or System Exploitation

Public exploit references

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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