Improper control of a resource through its lifetime in Linux kernel - CVE-2026-63859
Published: July 20, 2026
Vulnerability identifier: #VU138800
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-63859
CWE-ID: CWE-664
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper resource state management in airoha_qdma_cleanup_tx_queue() when cleaning up transmit queues. A local user can trigger transmit queue cleanup in a way that leaves DMA TX descriptors and queue indexes in an inconsistent state to cause a denial of service.
The issue affects the Airoha Ethernet driver in the Linux kernel.
How to mitigate CVE-2026-63859
Install security update from vendor's repository.