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CVE Record

CVE-2024-35850: Bluetooth: qca: fix NULL-deref on non-serdev setup

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: qca: fix NULL-deref on non-serdev setup Qualcomm ROME controllers can be registered from the Bluetooth line discipline and in this case the HCI UART serdev pointer is NULL. Add the missing sanity check to prevent a NULL-pointer dereference when setup() is called for a non-serdev controller.

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 Bluetooth driver flaw that can crash affected systems when certain Qualcomm ROME Bluetooth controllers are initialized through a non-serdev path. The public sources do not provide CVSS, confirmed exploitation, or broad impact evidence.

Executive priority

Treat as a targeted availability risk for Linux endpoints or devices with specific Qualcomm Bluetooth hardware. Prioritize normal kernel patching, with faster action for operationally sensitive systems where local crashes matter.

Technical view

The Linux Bluetooth qca setup path could dereference a NULL HCI UART serdev pointer for Qualcomm ROME controllers registered through the Bluetooth line discipline. Kernel stable fixes add a missing sanity check before that pointer is used.

Likely exposure

Exposure appears limited to Linux systems using the Qualcomm QCA/ROME Bluetooth controller path, especially non-serdev HCI UART setups. The source bundle lists Linux kernel versions as affected, but distro package applicability needs vendor confirmation.

Exploitation context

CISA KEV status is false, and the supplied sources do not claim active exploitation or public exploit availability. The described impact is a NULL-pointer dereference, most plausibly affecting availability rather than confidentiality or integrity.

Researcher notes

Evidence is narrow: the CVE record describes a NULL dereference fixed by sanity checking. No CVSS, CWE, exploit status, or detailed affected distro matrix is provided in the bundle.

Mitigation direction

  • Update affected Linux kernels using your distribution or device vendor guidance.
  • Prioritize systems with Qualcomm ROME Bluetooth hardware or QCA Bluetooth driver usage.
  • Track kernel stable fixes referenced by the CVE record.
  • Disable unused Bluetooth where operationally acceptable until patched.

Validation and detection

  • Inventory Linux kernel versions and Bluetooth hardware across affected fleets.
  • Check whether the QCA Bluetooth driver path is present or loaded.
  • Confirm vendor advisories map your kernel package to the referenced stable fixes.
  • Review kernel logs for Bluetooth qca setup failures or crashes.
Prepared
Confidence
medium
Sources
5

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.

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CVE-2024-35850 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
4Source 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
LinuxLinuxe9b3e5b8c65733f626a7ee919c4bc895b51d7bb2, e9b3e5b8c65733f626a7ee919c4bc895b51d7bb2, e9b3e5b8c65733f626a7ee919c4bc895b51d7bb2unaffected
LinuxLinux6.2, 0, 6.6.30, 6.8.9, 6.9affected
Weakness

CWE details

No CWE listed

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