Security readout for executives and security teams
Plain-English summary
This is a Linux kernel Bluetooth stability flaw. Certain fake CSR 5.0 clone USB Bluetooth controllers can cause duplicate suspend-notifier registration when replugged, leading to a kernel panic. The supplied sources support an availability risk, not data theft or remote compromise.
Executive priority
Treat as a targeted availability hardening item. Patch during normal maintenance unless affected systems depend on Bluetooth peripherals in production, kiosks, labs, or unattended environments where a panic would cause meaningful downtime.
Technical view
The crash occurs in the btusb Bluetooth path during device probing, with hci_register_dev calling blocking_notifier_chain_register after a fake CSR controller is reintroduced. The CVE record says the issue is resolved in Linux kernel stable commits, but provides no CVSS score or CWE classification.
Likely exposure
Exposure appears limited to Linux systems running affected kernel builds with fake CSR 5.0 clone Bluetooth controllers. Servers without Bluetooth hardware or USB peripheral attachment paths are likely less exposed, based on the provided source data.
Exploitation context
The source bundle does not show active exploitation, and KEV is false. The described condition involves replugging specific fake CSR Bluetooth controllers and results in a kernel panic, making this primarily a local availability concern.
Researcher notes
Evidence is narrow: the CVE text documents a kernel panic path and two kernel stable references, but no CVSS, CWE, broad affected matrix, or exploitation reports. Avoid expanding scope beyond Linux Bluetooth handling of fake CSR clone controllers.
Mitigation direction
- Apply a vendor kernel update containing the referenced upstream stable fixes.
- Prioritize Linux systems using USB Bluetooth adapters, especially CSR clone devices.
- Disable or remove unneeded Bluetooth/USB peripheral access where operationally acceptable.
- Check distribution advisories before relying on upstream commit IDs alone.
Validation and detection
- Inventory Linux kernel versions against vendor fixed releases.
- Identify systems with USB Bluetooth adapters or enabled Bluetooth support.
- Review kernel logs for btusb probe failures or panic traces matching this issue.
- Confirm patched kernels include the referenced stable commits or vendor backports.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2022-48982 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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.
SSVC decision data
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://git.kernel.org/stable/c/dc8fa6570deadb70c3fb74d7cd8ce38849feaed0CVE reference, Linux
- https://git.kernel.org/stable/c/b5ca338751ad4783ec8d37b5d99c3e37b7813e59CVE reference, Linux
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.