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CVE Record

CVE-2023-52467: mfd: syscon: Fix null pointer dereference in of_syscon_register()

In the Linux kernel, the following vulnerability has been resolved: mfd: syscon: Fix null pointer dereference in of_syscon_register() kasprintf() returns a pointer to dynamically allocated memory which can be NULL upon failure.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

This is a Linux kernel robustness flaw. A failed memory allocation in the syscon registration path could leave the kernel using a null pointer. The public sources do not provide CVSS, exploitation evidence, or a detailed attack scenario.

Executive priority

Treat as a routine kernel maintenance item unless asset exposure is unusually sensitive. There is no sourced evidence of exploitation or severity scoring, but kernel null dereferences can affect availability and should not be left indefinitely.

Technical view

of_syscon_register() did not handle a NULL return from kasprintf(). The Linux stable commits fix this null pointer dereference condition in the mfd/syscon code path. Impact details beyond the null dereference are not provided.

Likely exposure

Exposure is likely limited to systems running affected Linux kernel builds that can reach the syscon registration path. The provided data identifies Linux kernel versions and stable fix commits, but does not define product distributions beyond Debian LTS reference material.

Exploitation context

CISA KEV is false in the provided bundle, and no cited source states active exploitation. No public exploit status, required privileges, or remote/local trigger conditions are established by the supplied sources.

Researcher notes

The source evidence is narrow: title, brief description, affected Linux version data, stable commit references, and Debian LTS notice. Do not assume reachability, exploitability, privilege requirements, or distribution package status without additional vendor advisories.

Mitigation direction

  • Apply the relevant vendor or stable Linux kernel update containing the syscon fix.
  • Check Debian LTS guidance if running Debian-based affected systems.
  • Prioritize kernels matching the affected versions listed in the CVE record.
  • Monitor Linux distribution advisories for backported fixed packages.

Validation and detection

  • Inventory running kernel versions across servers, appliances, and container hosts.
  • Compare kernel builds against vendor advisories and the referenced stable commits.
  • Confirm patched systems boot into the updated kernel, not only install it.
  • Record systems that cannot be patched and track vendor mitigation guidance.
Prepared
Confidence
medium
Sources
9

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-2023-52467 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
8Source 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

CVECVE Program Container
CISA-ADPCISA ADP Vulnrichment
other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinuxe15d7f2b81d2e7d93115d46fa931b366c1cdebc2, e15d7f2b81d2e7d93115d46fa931b366c1cdebc2, e15d7f2b81d2e7d93115d46fa931b366c1cdebc2, e15d7f2b81d2e7d93115d46fa931b366c1cdebc2, e15d7f2b81d2e7d93115d46fa931b366c1cdebc2, e15d7f2b81d2e7d93115d46fa931b366c1cdebc2unaffected
LinuxLinux5.9, 0, 5.10.209, 5.15.148, 6.1.75, 6.6.14, 6.7.2, 6.8affected
Weakness

CWE details

No CWE listed

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