CVE-2022-48667

Temporary file-data corruption via stale SMB3 cache

Published Apr 28, 2024 · Updated May 11, 2026

Temporary data corruption in Linux 5.13 through 5.19.11 allows local users to receive stale SMB3 data after insert-range operations. The smb3_insert_range function shifts file contents without invalidating the affected page-cache region, so later reads can use cached data from before the shift. Reachability requires permission to perform an insert-range operation on an SMB3-mounted file; the reported consequence is temporary incorrect file data rather than persistent modification.

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

What happened

Temporary data corruption in Linux 5.13 through 5.19.11 allows local users to receive stale SMB3 data after insert-range operations. The smb3_insert_range function shifts file contents without invalidating the affected page-cache region, so later reads can use cached data from before the shift. Reachability requires permission to perform an insert-range operation on an SMB3-mounted file; the reported consequence is temporary incorrect file data rather than persistent modification.

The record

CVE
CVE-2022-48667
Published
Apr 28, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1485
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

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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=5.13
  2. Affected versionversion=7fe6fe95b936084dce6eedcc2cccadf96eafae73 <0cdde8460c304283d4ebe3f767a70215d1ab9d4e
  3. Affected versionversion=7fe6fe95b936084dce6eedcc2cccadf96eafae73 <9c8b7a293f50253e694f19161c045817a938e551

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.13; version=7fe6fe95b936084dce6eedcc2cccadf96eafae73 <0cdde8460c304283d4ebe3f767a70215d1ab9d4e; version=7fe6fe95b936084dce6eedcc2cccadf96eafae73 <9c8b7a293f50253e694f19161c045817a938e551

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.

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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

T1485Data Destruction

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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