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CVE Record

CVE-2024-43884: Bluetooth: MGMT: Add error handling to pair_device()

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: Add error handling to pair_device() hci_conn_params_add() never checks for a NULL value and could lead to a NULL pointer dereference causing a crash. Fixed by adding error handling in the function.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

This is a Linux kernel Bluetooth bug that can dereference a NULL pointer during device pairing. The expected public impact is a system crash or denial of service, not confirmed data theft or code execution. The sources do not provide CVSS, CWE, or exploitation evidence.

Executive priority

Treat this as a moderate availability risk. It is not currently supported by KEV or exploitation evidence, but kernel crash risk matters for endpoints, appliances, and Bluetooth-enabled operational devices. Patch through normal kernel maintenance, faster where Bluetooth is enabled.

Technical view

The flaw is in Bluetooth MGMT pair_device(): hci_conn_params_add() could produce a NULL value, and the caller lacked error handling before use. Linux stable commits add error handling. The public record identifies Linux kernel Bluetooth as affected, with multiple stable branch fixes referenced.

Likely exposure

Exposure is most relevant to Linux systems or embedded devices with Bluetooth support enabled and reachable through pairing workflows. Servers without Bluetooth hardware, drivers, or enabled Bluetooth services are less likely to be exposed, but kernel package status should still be verified.

Exploitation context

The bundle marks KEV as false and provides no cited evidence of active exploitation or public weaponization. The described outcome is a crash from NULL pointer dereference during Bluetooth pairing behavior. Remote or local preconditions are not fully established in the provided sources.

Researcher notes

The public record is sparse: no CVSS, no CWE, and limited trigger detail beyond NULL pointer dereference in pair_device(). Analysis should stay bounded to Bluetooth MGMT pairing code and the referenced stable commits. Avoid assuming code execution, privilege escalation, or active exploitation from this bundle.

Mitigation direction

  • Update to a vendor-supported kernel containing the referenced stable fix.
  • Apply relevant Debian LTS kernel updates where Debian is in use.
  • Disable Bluetooth where it is not operationally required.
  • Monitor Linux distribution advisories for backported fixes and package names.
  • Prioritize embedded and workstation fleets where Bluetooth is enabled.

Validation and detection

  • Inventory Linux kernel versions across servers, workstations, and embedded devices.
  • Identify systems with Bluetooth hardware, drivers, or services enabled.
  • Confirm installed kernel packages include the stable Bluetooth MGMT fix.
  • Review Debian LTS advisory coverage for Debian-based assets.
  • Check vendor kernel changelogs when using downstream or appliance kernels.
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-2024-43884 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
LinuxLinux5157b8a503fa834e8569c7fed06981e3d3d53db0, 5157b8a503fa834e8569c7fed06981e3d3d53db0, 5157b8a503fa834e8569c7fed06981e3d3d53db0, 5157b8a503fa834e8569c7fed06981e3d3d53db0, 5157b8a503fa834e8569c7fed06981e3d3d53db0, 5157b8a503fa834e8569c7fed06981e3d3d53db0, 5157b8a503fa834e8569c7fed06981e3d3d53db0, 5157b8a503fa834e8569c7fed06981e3d3d53db0unaffected
LinuxLinux4.3, 0, 4.19.321, 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

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