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CVE Record

CVE-2024-50188: net: phy: dp83869: fix memory corruption when enabling fiber

In the Linux kernel, the following vulnerability has been resolved: net: phy: dp83869: fix memory corruption when enabling fiber When configuring the fiber port, the DP83869 PHY driver incorrectly calls linkmode_set_bit() with a bit mask (1 << 10) rather than a bit number (10). This corrupts some other memory location -- in case of arm64 the priv pointer in the same structure. Since the advertising flags are updated from supported at the end of the function the incorrect line isn't needed at all and can be removed.

MediumCVSS 5.5Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2024-50188 is a Linux kernel driver bug affecting systems using the TI DP83869 Ethernet PHY in fiber mode. A local user could trigger memory corruption that may crash networking or the system. The cited sources do not show active exploitation.

Executive priority

Treat this as a targeted availability risk, not a broad internet-facing emergency. Prioritize embedded, industrial, or networked Linux systems using DP83869 fiber configurations, especially where downtime has operational impact.

Technical view

The DP83869 PHY driver passed a bit mask to linkmode_set_bit() instead of a bit number while configuring fiber. The kernel fix removes the incorrect call because advertising flags are later copied from supported flags. CVSS is 5.5: local access, low complexity, low privileges, no confidentiality or integrity impact, high availability impact.

Likely exposure

Exposure is likely limited to Linux systems with the DP83869 PHY driver and fiber configuration path. General Linux servers without this hardware or driver path are less likely exposed. Siemens advisories and Debian LTS notices indicate downstream product and distribution relevance.

Exploitation context

The CVE is not listed as CISA KEV in the provided bundle. No cited source states active exploitation. The CVSS vector indicates exploitation requires local access and low privileges, with impact centered on availability rather than data theft or tampering.

Researcher notes

The vulnerable pattern is a driver logic error, not a remotely reachable protocol flaw in the cited material. Validate exposure through hardware, driver, and kernel branch mapping. Avoid assuming all Linux assets are affected without DP83869 fiber usage evidence.

Mitigation direction

  • Update to a vendor kernel containing the listed stable fixes.
  • Apply Debian LTS kernel updates where applicable.
  • Review Siemens advisories for affected product-specific remediation.
  • Prioritize systems using DP83869 PHY hardware in fiber mode.
  • Track vendor guidance if running customized or embedded kernels.

Validation and detection

  • Inventory kernels and identify DP83869 PHY driver usage.
  • Confirm whether fiber mode is configured on affected systems.
  • Check installed kernel version against vendor fixed releases.
  • Verify Debian or product advisories are applied where relevant.
  • Monitor stability events on exposed network devices.
Prepared
Confidence
high
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-2024-50188 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
5.5 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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.

1CVSS vectors
3Timeline events
3ADP providers
11Source links

SSVC decision data

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

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
5.5CVSS 3.1MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H1.83.6CISA-ADP

Vulnerability scoring details

Base CVSS 3.1 score

5.5Medium
CVSS 3.1 vector shape for CVE-2024-50188Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

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
cvssV3_1other:ssvc
CVECVE Program Container
siemens-SADPADP container

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinuxa29de52ba2a156873505d8b8cef44e69925b8114, a29de52ba2a156873505d8b8cef44e69925b8114, a29de52ba2a156873505d8b8cef44e69925b8114, a29de52ba2a156873505d8b8cef44e69925b8114, a29de52ba2a156873505d8b8cef44e69925b8114, a29de52ba2a156873505d8b8cef44e69925b8114unaffected
LinuxLinux5.10, 0, 5.10.227, 5.15.168, 6.1.113, 6.6.57, 6.11.4, 6.12affected
Weakness

CWE details

No CWE listed

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