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CVE-2026-98809VulnerabilityPublished Updated

Microsoft · Bluetooth: hci_sync: don't drain cmd_sync backlog on unregister

Affects MicrosoftSource GCVE Database

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Authoritative record:CVE-2026-98809· Medium

Not known to be exploited · fixed in e8ba8c9c74d1035042cdf6cb5adf8f59b9b1271c : update Microsoft when convenient.

Data as of 7 Nov 2026, 12:19 UTC

Severity
Medium

Rated by Threat Radar · CVSS not yet scored by NVD

Thin evidence

One scorer or none
Patch
Available – fixed in e8ba8c9c74d1035042cdf6cb5adf8f59b9b1271c, b11acfcb5925ed27fae692b27931a1ac732677fb, b06d85b114cc5fa61809f9950bca66502e0e1173 +3

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 18 Oct 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 7 Nov 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ 008ee9eb8a11bcabf12c91771dd4f470b082bd44, < e8ba8c9c74d1035042cdf6cb5adf8f59b9b1271c
Fixed in
  • e8ba8c9c74d1035042cdf6cb5adf8f59b9b1271c
LinuxLinuxAffected
  • ≥ 008ee9eb8a11bcabf12c91771dd4f470b082bd44, < b11acfcb5925ed27fae692b27931a1ac732677fb
Fixed in
  • b11acfcb5925ed27fae692b27931a1ac732677fb
LinuxLinuxAffected
  • ≥ 008ee9eb8a11bcabf12c91771dd4f470b082bd44, < b06d85b114cc5fa61809f9950bca66502e0e1173
Fixed in
  • b06d85b114cc5fa61809f9950bca66502e0e1173
LinuxLinuxAffected
  • ≥ 008ee9eb8a11bcabf12c91771dd4f470b082bd44, < b1f24c1ab52345e810c42a1a81286cb5a7c92252
Fixed in
  • b1f24c1ab52345e810c42a1a81286cb5a7c92252
LinuxLinuxAffected
  • ≥ 008ee9eb8a11bcabf12c91771dd4f470b082bd44, < 143bde97c4101ae68eb656c87e620c45b07a3090
Fixed in
  • 143bde97c4101ae68eb656c87e620c45b07a3090
LinuxLinuxAffected
  • ≥ 008ee9eb8a11bcabf12c91771dd4f470b082bd44, < 7f16443a30f4e86d84ae4faf057d333b41ddb757
Fixed in
  • 7f16443a30f4e86d84ae4faf057d333b41ddb757

Description

To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle

References

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