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CVE Record

CVE-2023-52593: wifi: wfx: fix possible NULL pointer dereference in wfx_set_mfp_ap()

In the Linux kernel, the following vulnerability has been resolved: wifi: wfx: fix possible NULL pointer dereference in wfx_set_mfp_ap() Since 'ieee80211_beacon_get()' can return NULL, 'wfx_set_mfp_ap()' should check the return value before examining skb data. So convert the latter to return an appropriate error code and propagate it to return from 'wfx_start_ap()' as well. Compile tested only.

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 bug in the wfx Wi-Fi driver. A missing NULL check can let a kernel code path examine missing beacon data, potentially causing a crash. The known exposure appears narrow: systems must run affected Linux kernel code and use this driver path.

Executive priority

Treat as a targeted Linux kernel availability risk, not a broad emergency based on current evidence. Patch through normal kernel maintenance, with higher priority for embedded or wireless systems using the wfx driver.

Technical view

wfx_set_mfp_ap() called ieee80211_beacon_get() and then inspected skb data without confirming a non-NULL return. The fix adds error handling and propagates failure through wfx_start_ap(). Sources do not provide CVSS, CWE, exploitability, or runtime impact beyond a possible NULL pointer dereference.

Likely exposure

Likely limited to Linux systems with affected kernel versions where the wfx Wi-Fi driver is built and used, especially access point startup or management frame protection handling. The bundle does not identify specific distributions, hardware products, or configurations.

Exploitation context

No active exploitation is stated in the supplied sources, and the CVE is not marked KEV. The bundle does not describe a public exploit, attacker prerequisites, or whether the condition is externally triggerable.

Researcher notes

The record is sparse: severity, CVSS, CWE, exploitability, and affected-version semantics are incomplete. The key technical artifact is the missing NULL check around ieee80211_beacon_get() in wfx_set_mfp_ap(), fixed by returning and propagating an error.

Mitigation direction

  • Update to a Linux kernel containing the referenced stable fixes.
  • Check your Linux distribution advisories for backported kernel packages.
  • Disable or avoid using the wfx driver if not needed.
  • Prioritize systems using wfx Wi-Fi functionality in AP mode.
  • Monitor vendor guidance for corrected affected-version ranges.

Validation and detection

  • Inventory kernels that include or load the wfx driver.
  • Check whether wfx access point functionality is used in production.
  • Confirm installed kernel packages include the stable fix commits.
  • Review boot and kernel logs for wfx-related crashes.
  • Track distribution advisories for CVE-2023-52593 coverage.
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

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CVE-2023-52593 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: 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
LinuxLinux268bceec1684932e194ae87877dcc73f534d921c, 268bceec1684932e194ae87877dcc73f534d921c, 268bceec1684932e194ae87877dcc73f534d921c, 268bceec1684932e194ae87877dcc73f534d921cunaffected
LinuxLinux5.10, 0, 6.1.77, 6.6.16, 6.7.4, 6.8affected
Weakness

CWE details

No CWE listed

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