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CVE Record

CVE-2024-35868: smb: client: fix potential UAF in cifs_stats_proc_write()

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix potential UAF in cifs_stats_proc_write() Skip sessions that are being teared down (status == SES_EXITING) to avoid UAF.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2024-35868 is a Linux kernel SMB client flaw where session cleanup could leave code using freed memory. The public record says it is resolved by skipping SMB sessions that are exiting. Business impact depends on whether your Linux systems use the CIFS/SMB client and whether your kernel includes the stable fix.

Executive priority

Treat this as a kernel hygiene item with targeted urgency for SMB client users. There is no sourced evidence of active exploitation, but kernel memory safety flaws deserve timely patch validation.

Technical view

The issue is a potential use-after-free in the Linux kernel SMB client function cifs_stats_proc_write(). The fix skips sessions with status SES_EXITING during teardown. The CVE data does not provide CVSS, CWE, exploitability prerequisites, or a complete product matrix beyond Linux kernel affected version data and stable commit references.

Likely exposure

Likely exposure is Linux systems with the SMB/CIFS client code present, especially hosts mounting SMB shares. The source data does not prove remote reachability, required privileges, or affected distribution packages.

Exploitation context

No CISA KEV listing is reported in the bundle, and the cited sources do not state active exploitation. The issue is described only as a potential kernel use-after-free during SMB session teardown handling.

Researcher notes

The public bundle is sparse: no CVSS, CWE, proof of exploitability, or detailed attack preconditions. Analysis should focus on code lineage, backported stable commits, and whether distributions map their kernel packages to the fixed SMB client behavior.

Mitigation direction

  • Check your Linux vendor advisory for CVE-2024-35868 package status.
  • Upgrade to a kernel build containing the referenced stable fix.
  • Prioritize systems that mount SMB/CIFS shares or enable CIFS client functionality.
  • Use standard kernel maintenance windows if vendor severity remains unavailable.

Validation and detection

  • Inventory Linux kernel versions across servers, workstations, and appliances.
  • Identify systems using CIFS/SMB mounts or loading the SMB client module.
  • Compare installed kernel packages with vendor-fixed versions for CVE-2024-35868.
  • Confirm patched kernels are booted, not merely installed.
Prepared
Confidence
medium
Sources
6

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

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CVE-2024-35868 mapping review

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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
5Source links

SSVC decision data

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

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
LinuxLinux7f48558e6489d032b1584b0cc9ac4bb11072c034, 7f48558e6489d032b1584b0cc9ac4bb11072c034, 7f48558e6489d032b1584b0cc9ac4bb11072c034, 7f48558e6489d032b1584b0cc9ac4bb11072c034, a67172a013953664b1dad03c648200c70b90506cunaffected
LinuxLinux3.13, 0, 6.1.85, 6.6.26, 6.8.5, 6.9affected
Weakness

CWE details

No CWE listed

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