Linux Kernel BlueZ mgmt-tester.c read_50_controller_cap_complete null pointer dereference
Noroxi assessment
Priority: Monitor (action score 22/100)
- The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
- Probability of exploitation in the next 30 days: 0.38% (FIRST EPSS).
- Someone on the same network segment can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
- Fixed version: bluez (Debian:12) 5.65-1; bluez (SUSE:Linux Enterprise Module for Basesystem 15 SP4) 5.62-150400.4.8.1.
- Severity is disputed: the assigning authority (CNA) scores it 3.5, NVD 5.7.
- Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).
Low priority for now. Upgrade to bluez (Debian:12) 5.65-1; bluez (SUSE:Linux Enterprise Module for Basesystem 15 SP4) 5.62-150400.4.8.1 or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
A vulnerability classified as problematic has been found in Linux Kernel. Affected is the function read_50_controller_cap_complete of the file tools/mgmt-tester.c of the component BlueZ. The manipulation of the argument cap_len leads to null pointer dereference. It is recommended to apply a patch to fix this issue. VDB-211086 is the identifier assigned to this vulnerability.
- Published
- Oct 17, 2022
- Updated
- Jun 17, 2026
- EPSS
- 0.4% · 31th percentile
- CWE
- CWE-404
Report tools
Action score
22
Monitor
Low priority for now.
- CVSS
- 22 / 40 · 5.7 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.4%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- 5.7
- CNA · VulDB
- 3.5
- 2.2 point gap
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- No public exploit code on record
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
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Noroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
| Vendor | Product | CPE |
|---|---|---|
| bluez | bluez | cpe:2.3:a:bluez:bluez |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- bluez bluezbefore 5.65
Versions reported by the vendor
Affected version ranges reported by the assigning authority (VulDB). Independent of NVD's CPE analysis and usually ahead of it.
Linux Kernel
- n/aaffected
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | bluez | before 5.65-1 | 5.65-1 |
| SUSE:Linux Enterprise Module for Basesystem 15 SP4 | bluez | before 5.62-150400.4.8.1 | 5.62-150400.4.8.1 |
| SUSE:Linux Enterprise Module for Basesystem 15 SP4 | bluez | before 5.62-150400.4.8.1 | 5.62-150400.4.8.1 |
Same product
bluez: all recordsOther highest-scoring records for the same primary product.
- CVE-2024-8805BlueZ HID over GATT Profile Improper Access Control Remote Code Execution Vulnerability36Monitor
- CVE-2022-0204A heap overflow vulnerability was found in bluez in versions prior to 5.63.36Monitor
- CVE-2021-43400An issue was discovered in gatt-database.c in BlueZ 5.61.36Monitor
- CVE-2022-39177BlueZ before 5.59 allows physically proximate attackers to cause a denial of service because malformed and invalid capabilities can be proce35Monitor
- CVE-2022-39176BlueZ before 5.59 allows physically proximate attackers to obtain sensitive information because profiles/audio/avrcp.c does not validate par35Monitor
- CVE-2019-8922A heap-based buffer overflow was discovered in bluetoothd in BlueZ through 5.48.35Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| debian:bluez | 5.65-1 · Debian:12 | Package registry (OSV) |
| opensuse:bluez | 5.62-150400.4.8.1 · openSUSE:Leap 15.4 | Package registry (OSV) |
| suse:bluez | 5.62-150400.4.8.1 · SUSE:Linux Enterprise Module for Basesystem 15 SP4 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
National notice (Türkiye Cybersecurity Directorate / USOM)
Official security notices citing this record; remediation advice is on the agency's page.
- TR-22-0664 · Oct 19, 2022(Linux Kernel Güvenlik Zafiyeti)
Technical details
Attack conditions
- Someone on the same network segment can trigger it.
- A low-privileged account is enough.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- high · the service can be disrupted
- Attack vector
- Adjacent
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- High
Weakness class (CWE)
CWE-404 · Improper Resource Shutdown or ReleaseCVSS vector
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
Change log
- Fix✗ → ✓
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References
Show all references (1 more)Show less
Vendor advisories and official records. Exploit/PoC links are deliberately left out.