CVE-2026-43021

medium Red Hat
CVSS v3 Base Score
7.0
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS Score
0.0%
Exploitation probability in 30 days
Top 95% most likely to be exploited
Attack Characteristics
Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Confidentiality
High
Integrity
High
Availability
High
Published: May 1, 2026 (13 days ago)
Last Modified: May 1, 2026
Vendor: Red Hat
Source: REDHAT

Description

A flaw was found in the Bluetooth hci_sync component of the Linux kernel. When the hci_cmd_sync_queue_once() function fails, the associated destroy callback is not invoked, leading to memory and reference leaks. This continuous leakage of resources could eventually result in a Denial of Service (DoS) condition, making the system unstable or unresponsive.

CWE

CWE-772

Affected Products

Red Hat Enterprise Linux 10Red Hat Enterprise Linux 6Red Hat Enterprise Linux 7Red Hat Enterprise Linux 8Red Hat Enterprise Linux 9

References

🔗 www.cve.org 🔗 nvd.nist.gov 🔗 lore.kernel.org