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CVE Record

CVE-2024-44988: net: dsa: mv88e6xxx: Fix out-of-bound access

In the Linux kernel, the following vulnerability has been resolved: net: dsa: mv88e6xxx: Fix out-of-bound access If an ATU violation was caused by a CPU Load operation, the SPID could be larger than DSA_MAX_PORTS (the size of mv88e6xxx_chip.ports[] array).

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 mv88e6xxx network switch driver. Under a specific ATU violation condition, the driver could access memory outside its port array. The source bundle does not provide CVSS, business impact detail, or evidence of active exploitation.

Executive priority

Handle through normal kernel vulnerability management, with higher priority for embedded or network-facing Linux devices using the affected switch driver. Current sources do not justify emergency response, but kernel memory-safety defects should not be ignored.

Technical view

The issue is an out-of-bounds access in net/dsa/mv88e6xxx. If an ATU violation is triggered by a CPU Load operation, SPID may exceed DSA_MAX_PORTS, the size of mv88e6xxx_chip.ports[]. Stable kernel commits resolve the bounds problem across supported branches.

Likely exposure

Exposure is likely limited to Linux systems running affected kernels with the mv88e6xxx DSA switch driver path in use. The bundle lists affected Linux versions including 5.0 through 6.11 and fixed stable branch releases, but does not identify distributions beyond Debian LTS advisories.

Exploitation context

The bundle marks KEV as false and provides no cited evidence of public exploitation or weaponized use. Treat exploitation status as not known from these sources, not as proof that exploitation is impossible.

Researcher notes

The key condition is SPID exceeding DSA_MAX_PORTS during CPU Load-related ATU violation handling. The record lacks CVSS, CWE, crash details, privilege requirements, and reachable attack surface, so validation should focus on code presence, hardware path, and patched commit lineage.

Mitigation direction

  • Update to a kernel release containing the referenced stable fixes.
  • Apply Debian LTS kernel updates where Debian advisories apply.
  • Prioritize systems using mv88e6xxx DSA switch hardware or embedded networking roles.
  • Check vendor or distribution guidance for exact fixed package versions.
  • Avoid direct wrangler or deployment assumptions; this is kernel remediation work.

Validation and detection

  • Inventory Linux kernel versions across network appliances, embedded devices, and servers.
  • Confirm whether mv88e6xxx DSA driver support is present or loaded.
  • Map running kernels against the affected and fixed versions in advisories.
  • Verify patched systems include the relevant stable kernel commit for their branch.
  • Review distribution security notices for package-level remediation status.
Prepared
Confidence
medium
Sources
12

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-2024-44988 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
11Source 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
LinuxLinux27a2fa0098171199022affa76bdf15d77585457f, 75c05a74e745ae7d663b04d75777af80ada2233c, 75c05a74e745ae7d663b04d75777af80ada2233c, 75c05a74e745ae7d663b04d75777af80ada2233c, 75c05a74e745ae7d663b04d75777af80ada2233c, 75c05a74e745ae7d663b04d75777af80ada2233c, 75c05a74e745ae7d663b04d75777af80ada2233c, 75c05a74e745ae7d663b04d75777af80ada2233c, 1657d2814e83d3e338d6d60c5829d15d86645bc0, 4.19.21, 4.20.8unaffected
LinuxLinux5.0, 0, 4.19.323, 5.4.283, 5.10.225, 5.15.166, 6.1.107, 6.6.48, 6.10.7, 6.11affected
Weakness

CWE details

No CWE listed

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