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CVE Record

CVE-2023-54231: net: libwx: fix memory leak in wx_setup_rx_resources

In the Linux kernel, the following vulnerability has been resolved: net: libwx: fix memory leak in wx_setup_rx_resources When wx_alloc_page_pool() failed in wx_setup_rx_resources(), it doesn't release DMA buffer. Add dma_free_coherent() in the error path to release the DMA buffer.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysislow

Security readout for executives and security teams

Plain-English summary

CVE-2023-54231 is a Linux kernel memory-leak fix in the net/libwx networking code. If a receive-resource setup allocation fails, a DMA buffer was not released. The practical concern is resource exhaustion or instability in affected kernels, not proven code execution. No public source provided indicates active exploitation.

Executive priority

Treat as routine kernel maintenance unless your environment depends heavily on the affected networking code or shows related instability. There is no sourced evidence of exploitation or severe impact, but kernel memory leaks can affect availability and should be included in normal patch cycles.

Technical view

In wx_setup_rx_resources(), failure of wx_alloc_page_pool() left an allocated DMA buffer unreleased. The upstream stable fix adds dma_free_coherent() on that error path. The CVE metadata lists Linux as affected, including 6.3/6.4-era versions, and references two stable kernel commits. No CVSS, CWE, or exploitability details are provided.

Likely exposure

Exposure appears limited to Linux systems running affected kernel builds that include and exercise the net/libwx receive-resource setup path. Systems not using this kernel code path are less likely to be impacted. The provided version metadata is incomplete enough that distro-specific package guidance should be checked.

Exploitation context

The source bundle describes a memory leak triggered by an allocation failure during driver resource setup. It does not describe a remote trigger, privilege requirement, public exploit, or active exploitation. CISA KEV status is false in the provided data.

Researcher notes

Evidence is limited to the CVE record and upstream stable commits. The issue is an error-path DMA buffer leak, not a documented privilege escalation or RCE. Affected version metadata is sparse and should be reconciled against the exact kernel tree or vendor backport status.

Mitigation direction

  • Update to a kernel containing the referenced stable fixes.
  • Check Linux distribution advisories for fixed package versions.
  • Prioritize systems using affected kernel networking drivers or unstable network initialization paths.
  • If immediate update is unavailable, follow vendor guidance for risk reduction.

Validation and detection

  • Inventory Linux kernel versions and vendor package revisions.
  • Confirm whether the running kernel includes the referenced stable commits.
  • Review distro changelogs for CVE-2023-54231 or net/libwx memory-leak fixes.
  • Monitor affected systems for kernel memory pressure or network driver initialization issues.
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

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CVE-2023-54231 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
0ADP providers
3Source links

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.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux850b971110b20cbcc2367516fefe78e84fec7d79, 850b971110b20cbcc2367516fefe78e84fec7d79unaffected
LinuxLinux6.3, 0, 6.3.2, 6.4affected
Weakness

CWE details

No CWE listed

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