LiveActive security incident?Get immediate response
CVE Record

CVE-2022-48667: smb3: fix temporary data corruption in insert range

In the Linux kernel, the following vulnerability has been resolved: smb3: fix temporary data corruption in insert range insert range doesn't discard the affected cached region so can risk temporarily corrupting file data. Also includes some minor cleanup (avoiding rereading inode size repeatedly unnecessarily) to make it clearer.

UnknownCVSS not scoredNot KEV-listedUpdated
Discuss exposureBack to CVEs
Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

This Linux kernel issue can cause temporary file data corruption when SMB3 insert-range handling leaves affected cached data in place. The business risk is data integrity, mainly for systems using Linux SMB3/CIFS file access. The source bundle provides no CVSS score and no evidence of active exploitation.

Executive priority

Treat as a data-integrity maintenance issue unless local evidence shows critical SMB3-dependent workflows are exposed. Patch through normal kernel update processes, with higher priority for systems handling shared production data over SMB3.

Technical view

The kernel SMB3 client insert-range path failed to discard the impacted cached region, creating a risk of temporary file data corruption. Public references point to Linux stable commits that resolve the issue. The available CVE data does not describe attack prerequisites, privilege requirements, or remote exploitability.

Likely exposure

Exposure appears limited to Linux systems running affected kernel versions or builds containing the vulnerable SMB3 code path, especially where SMB3/CIFS-mounted files are modified with insert-range behavior. The provided version data is incomplete and should be verified against distribution advisories.

Exploitation context

The source bundle does not cite public exploitation, and KEV status is false. The CVE text describes a correctness and data-integrity flaw, not a confirmed weaponized attack path. No exploit details are provided in the cited sources.

Researcher notes

Evidence is sparse: no CVSS, CWE, exploit status, or detailed affected matrix is supplied. Analysis should focus on commit inclusion, distribution backports, SMB3 client usage, and whether insert-range operations occur in relevant workloads.

Mitigation direction

  • Check Linux distribution advisories for CVE-2022-48667 coverage.
  • Apply vendor kernel updates that include the referenced stable fixes.
  • Prioritize SMB3/CIFS clients handling important shared file data.
  • Avoid relying on affected kernels for sensitive SMB3 file modification workflows until patched.

Validation and detection

  • Inventory Linux kernel versions on SMB3/CIFS client systems.
  • Confirm whether vendor kernels include the referenced stable commits.
  • Review change logs or package metadata for CVE-2022-48667 fixes.
  • Monitor file integrity issues on SMB3-mounted workloads until updates are applied.
Prepared
Confidence
medium
Sources
4

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cve · low confidence lookup

CVE-2022-48667 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
3Timeline events
2ADP providers
3Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: partial

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
other:ssvc
CVECVE Program Container

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux7fe6fe95b936084dce6eedcc2cccadf96eafae73, 7fe6fe95b936084dce6eedcc2cccadf96eafae73unaffected
LinuxLinux5.13, 0, 5.19.12, 6.0affected
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.