CVE-2026-64409: Bluetooth: btmtksdio: fix infinite loop in btmtksdio_txrx_work()
Published Jul 25, 2026
·Updated
Bluetooth: btmtksdio: fix infinite loop in btmtksdiotxrxwork()
Affected Software
2 affected componentsFixes available
Linux Kernel
Microsoft azl3 kernel 6.6.144.1-1<6.6.145.2-1
6.6.145.2-1
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.6.145.2-1
Event History
Jul 25, 2026
CVE Published
via MITRE·08:50 AM
Data Sourced
via MITRE·08:50 AM
Description
Data Sourced
via NVD·10:17 AM
Description
Jul 26, 2026
Data Sourced
via Microsoft·08:08 AM
DescriptionSeverityWeakness
Data Sourced
via Microsoft·08:08 AM
Affected Software
Updated
via Microsoft·08:08 AM
DescriptionSeverity
Frequently Asked Questions
1
What is the severity of CVE-2026-64409?
The severity of CVE-2026-64409 is rated as medium with a score of 5.5.
2
How does CVE-2026-64409 affect system performance?
CVE-2026-64409 can lead to an infinite loop in the btmtksdio_txrx_work() function, potentially causing system tasks to hang.
3
How do I fix CVE-2026-64409?
To fix CVE-2026-64409, ensure you update to a patched version of the Linux kernel that addresses this vulnerability.
4
What is the impact of not addressing CVE-2026-64409?
Not addressing CVE-2026-64409 may result in continuous task blocking and decreased system responsiveness.
5
Is CVE-2026-64409 specific to any operating system?
CVE-2026-64409 specifically affects the Linux kernel and relevant implementations such as the Microsoft azl3 kernel.