VulnerabilityPublished 6 Oct 2026Updated 19 Oct 2026

CVE-2026-98293: Linux kernel · Bluetooth: ISO: Fix parent socket leak in iso_conn_ready()

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in f016daabd4fec4e9b8563f8b6f42eabce0ca66b0 : update Linux kernel when convenient.

Data as of 26 Oct 2026, 14:05 UTC

Severity

Low

Rated Low 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 f016daabd4fec4e9b8563f8b6f42eabce0ca66b0, ea8a262662be62c095789924c11722ecbf40a4de, e2b156a8d25966be49c1f809b654a2c4bb16564d +3

Exploitation evidence

Disclosed: evidence found.
CVE published 6 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected >=6.6.67 <6.6.158	Fixed in f016daabd4fec4e9b8563f8b6f42eabce0ca66b0 ea8a262662be62c095789924c11722ecbf40a4de e2b156a8d25966be49c1f809b654a2c4bb16564d ca18ee413a7cb6f09885778039225e58bae0d607 9228f87365e68a6cae191f57f456e89a6d2167cf 6.6.158
LinuxLinux	Affected =6.8	Fixed in–

AI-suggested

A fix is available and included in Linux kernel version 6.6.158. Users and administrators should update to version 6.6.158 or later to remediate this issue.

Description

A vulnerability in the Linux kernel Bluetooth ISO subsystem caused a parent socket reference leak in the iso_conn_ready() function. This leak occurs when iso_sock_alloc() fails, as the error path does not properly drop the reference to the parent socket, leading to resource leakage. The issue has been fixed in Linux kernel version 6.6.158 and later.

Impact

The vulnerability leads to a resource leak of the parent socket in the Bluetooth ISO subsystem of the Linux kernel. This could potentially degrade system stability or performance over time due to unreleased socket references. There is no indication of direct exploitation or security compromise beyond resource leakage.

Summary

The Linux kernel Bluetooth ISO subsystem had a flaw where iso_get_sock() returned the parent socket with a reference held, which should be dropped by sock_put() after setting up the child socket. However, if iso_sock_alloc() failed, the error path only called release_sock() without dropping the reference, causing a parent socket leak. This vulnerability was addressed by ensuring the reference is dropped on the failure path. The fix is included in Linux kernel version 6.6.158 and subsequent releases.

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 26 Oct 2026, 11:53 UTC

Technical details

References

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