CVE-2026-43021
Last modified
CVE-2026-43021 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_sync: fix leaks when hci_cmd_sync_queue_once fails When hci_cmd_sync_queue_once() returns with error, the destroy callback will not be called. Fix leaking references / memory on these failures.. EPSS estimates a 0.11% chance of exploitation in the next 30 days.
Description
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_sync: fix leaks when hci_cmd_sync_queue_once fails When hci_cmd_sync_queue_once() returns with error, the destroy callback will not be called. Fix leaking references / memory on these failures.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Linux | Linux Kernel | >= 6.19, < 6.19.12 | — |
| Linux | Linux Kernel | 7.0 | Rc1 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-43021?
How severe is CVE-2026-43021?
How do I fix CVE-2026-43021?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-43016In the Linux kernel, the following vulnerability has been re…7.8
- CVE-2026-43017In the Linux kernel, the following vulnerability has been re…5.5
- CVE-2026-43018In the Linux kernel, the following vulnerability has been re…8.8
- CVE-2026-43019In the Linux kernel, the following vulnerability has been re…7.8
- CVE-2026-4302The WowOptin: Next-Gen Popup Maker plugin for WordPress is v…7.2
- CVE-2026-43020In the Linux kernel, the following vulnerability has been re…7.8
- CVE-2026-43022In the Linux kernel, the following vulnerability has been re…5.5
- CVE-2026-43023In the Linux kernel, the following vulnerability has been re…7.8
- CVE-2026-43024In the Linux kernel, the following vulnerability has been re…5.5
- CVE-2026-43025In the Linux kernel, the following vulnerability has been re…7.3
- CVE-2026-43026In the Linux kernel, the following vulnerability has been re…5.5
- CVE-2026-43027In the Linux kernel, the following vulnerability has been re…7.8
Are you affected by CVE-2026-43021?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST