CVE-2022-48668

File data corruption via stale SMB3 cache

Published Apr 28, 2024 · Updated May 11, 2026

Data corruption in Linux kernel 5.13 through 5.19.11 allows local users to corrupt file data through SMB3 collapse-range operations. The smb3_collapse_range path fails to lock, flush, and discard the affected page-cache region before moving and truncating remote file data. Exploitation requires low-privileged local access to invoke collapse range on a mounted SMB3 file; the documented consequence is temporary file-data corruption.

CVSS severity3.3
Low
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Data corruption in Linux kernel 5.13 through 5.19.11 allows local users to corrupt file data through SMB3 collapse-range operations. The smb3_collapse_range path fails to lock, flush, and discard the affected page-cache region before moving and truncating remote file data. Exploitation requires low-privileged local access to invoke collapse range on a mounted SMB3 file; the documented consequence is temporary file-data corruption.

The record

CVE
CVE-2022-48668
Published
Apr 28, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1565.001
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 28, 2024CVE 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=5.13
  2. Affected versionversion=5476b5dd82c8bb9d0dd426f96575ae656cede140 <49523a4732204bdacbf3941a016503ddb4ddb3b9
  3. Affected versionversion=5476b5dd82c8bb9d0dd426f96575ae656cede140 <fa30a81f255a56cccd89552cd6ce7ea6e8d8acc4

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.13; version=5476b5dd82c8bb9d0dd426f96575ae656cede140 <49523a4732204bdacbf3941a016503ddb4ddb3b9; version=5476b5dd82c8bb9d0dd426f96575ae656cede140 <fa30a81f255a56cccd89552cd6ce7ea6e8d8acc4

Published CVSS scores

3.3NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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

T1565.001Stored Data Manipulation

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo