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VulnerabilityPublished

CVE-2026-99015: Linux kernel · Bluetooth: hci_sock: Serialize dead-device detachment

Affects Linux kernelSource CVE Database V5

0

Not known to be exploited · fixed in e660a22402944f2615a16fde7129a3c497537329 : patch Linux kernel soon.

Data as of 26 Oct 2026, 13:07 UTC

Severity
High

Rated High by Threat Radar's AI analysis · CVSS not yet scored by NVD

EPSS
0.1% chance of exploitation in 30 days – higher than 6% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in e660a22402944f2615a16fde7129a3c497537329, c3d2799877906d0c8392d96e14216cd82b020330, 381a0925c556a8d91a80a9b9e3e86651d60ffee3 +9

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 23 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: 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 26 Oct 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • >=4.4.281 <4.5
  • >=4.9.280 <4.10
  • >=4.14.244 <4.15
  • >=4.19.203 <4.20
  • >=5.4.140 <5.5
  • >=5.10.58 <5.11
  • >=5.13.10 <5.14
Fixed in
  • e660a22402944f2615a16fde7129a3c497537329
  • c3d2799877906d0c8392d96e14216cd82b020330
  • 381a0925c556a8d91a80a9b9e3e86651d60ffee3
  • 76f2e2665697340ac719e7ff1bf148dd014e55c1
  • 37cef0c8fb537f40600910d2c2e5f2d5509305f3
  • 5.14
  • 5.11
  • 5.5
  • 4.20
  • 4.15
  • 4.10
  • 4.5
LinuxLinuxAffected
  • =5.14
Fixed in–

AI-suggested

A fix is available and has been applied in Linux kernel versions 4.15, 4.20, 5.5, 5.11, and 5.14 and corresponding intermediate versions. Users and administrators should upgrade to these fixed kernel versions or later to mitigate this vulnerability. No additional mitigation steps are indicated.

Description

A race condition vulnerability in the Linux kernel's Bluetooth HCI socket handling allows a use-after-free or NULL pointer dereference when rebinding an HCI socket after its controller is unregistered. This can cause kernel crashes due to improper serialization of device detachment and socket rebinding.

References

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