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CVE-2026-43022VulnerabilityPublished Updated

Microsoft · Bluetooth: hci_sync: hci_cmd_sync_queue_once() return -EEXIST if exists

Affects MicrosoftSource GCVE Database

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Authoritative record:CVE-2026-43022· Low

Not known to be exploited · fixed in dfee8da127bafa46530b72347bce3ccae736296d : update Microsoft when convenient.

Data as of 30 Oct 2026, 06:59 UTC

Severity
Low

Rated by Threat Radar · No CVSS score from NVD or the CNA

EPSS
0.1% chance of exploitation in 30 days – higher than 4% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in dfee8da127bafa46530b72347bce3ccae736296d, 2969554bcfccb5c609f6b6cd4a014933f3a66dd0, 799e2e5fbf3f14874b5c6cc289a0dd68b2ca1979 +5

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 1 May 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • >=6.6.51 <6.6.160
  • >=6.1.120 <6.2
  • >=6.8.9 <6.9
Fixed in
  • dfee8da127bafa46530b72347bce3ccae736296d
  • 2969554bcfccb5c609f6b6cd4a014933f3a66dd0
  • 799e2e5fbf3f14874b5c6cc289a0dd68b2ca1979
  • 6.9
  • 6.6.160
  • 6.2
  • 5cfa4f537a056c91ac6c09bc3ab58a4455217df7
  • 0ad2ce230b38cd4b3f6732cc609e270461e626e5
LinuxLinuxAffected
  • =6.9
Fixed in–

Description

CVE-2026-43022 is a vulnerability related to the Bluetooth component in Microsoft software version 3.0. The issue involves the function hci_cmd_sync_queue_once() returning an error code (-EEXIST) if a command already exists in the queue. No detailed technical or impact information is provided beyond this behavior. There is no CVSS score available, and no known exploits in the wild have been reported.

References

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