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CVE Record

CVE-2024-36880: Bluetooth: qca: add missing firmware sanity checks

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: qca: add missing firmware sanity checks Add the missing sanity checks when parsing the firmware files before downloading them to avoid accessing and corrupting memory beyond the vmalloced buffer.

HighCVSS 7.8Not KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

A flaw in the Linux QCA Bluetooth driver can let a malformed firmware file corrupt kernel memory during firmware loading. Successful exploitation requires local, low-privileged access according to the supplied CVSS vector, but could compromise confidentiality, integrity, and availability. This is not described as a network-reachable Bluetooth attack.

Executive priority

Treat as a high-priority local privilege and kernel-integrity issue on systems using QCA Bluetooth. Patch exposed shared workstations, endpoints, and appliances promptly. Broader emergency action is not supported without evidence of the relevant driver, vulnerable code, or active exploitation.

Technical view

The QCA Bluetooth firmware parser lacked bounds and sanity checks before copying firmware data into a vmalloc-allocated buffer. Crafted firmware content could therefore trigger out-of-bounds memory access and corruption in kernel context. The linked stable-kernel commits add validation before firmware download.

Likely exposure

Exposure is limited to Linux systems using the affected QCA Bluetooth driver and vulnerable firmware-loading code. The bundle identifies affected releases but does not provide sufficiently clear range semantics to determine exact vulnerable boundaries. Systems without the relevant driver or hardware are less likely exposed.

Exploitation context

The supplied CVSS 3.1 vector is 7.8: local access, low privileges, low complexity, no user interaction, and potentially high confidentiality, integrity, and availability impact. The CVE is not listed in KEV, and the supplied sources provide no evidence of active exploitation.

Researcher notes

The weakness is memory corruption caused by insufficient firmware-structure validation in kernel Bluetooth code. The source bundle does not identify a CWE, demonstrated exploit, precise attack primitive, or dependable affected-version intervals. Validate exposure through vendor package provenance and fix backports rather than version strings alone.

Mitigation direction

  • Install a vendor-supported kernel containing the linked firmware sanity-check fix.
  • Prioritize systems using QCA Bluetooth hardware or loading QCA firmware.
  • Restrict untrusted local access and firmware-file modification until updates are applied.
  • Check distribution or device-vendor advisories for exact fixed package versions.

Validation and detection

  • Inventory kernel versions and identify systems using the QCA Bluetooth driver.
  • Compare installed vendor kernel packages with applicable security advisories.
  • Confirm the deployed kernel includes the relevant upstream stable fix.
  • Verify unprivileged users cannot modify trusted Bluetooth firmware files.
Prepared
Confidence
medium
Sources
7

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-2024-36880 mapping review

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Vulnerability profileCVE Program record
Severity
High
CVSS
7.8 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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
2ADP providers
6Source 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
7.8CVSS 3.1HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H1.85.9Linux

Vulnerability scoring details

Base CVSS 3.1 score

7.8High
CVSS 3.1 vector shape for CVE-2024-36880Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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
other:ssvc
CVECVE Program Container

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux83e81961ff7ef75f97756f316caea5aa6bcc19cc, 83e81961ff7ef75f97756f316caea5aa6bcc19cc, 83e81961ff7ef75f97756f316caea5aa6bcc19cc, 83e81961ff7ef75f97756f316caea5aa6bcc19cc, 83e81961ff7ef75f97756f316caea5aa6bcc19ccunaffected
LinuxLinux4.3, 0, 5.15.159, 6.1.91, 6.6.31, 6.8.10, 6.9affected
Weakness

CWE details

No CWE listed

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