Race condition in Linux kernel - CVE-2026-53380
Published: July 21, 2026
Vulnerability identifier: #VU138887
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-2026-53380
CWE-ID: CWE-362
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 concurrent modification of a shared buffer list in rzv2h_ivc_transfer_buffer() when processing buffers from a separate workqueue. A local user can trigger concurrent buffer list operations to cause a denial of service.
The issue affects access to rzv2h_ivc::buffers.queue because list_del() is performed outside the spinlock-protected critical section.
How to mitigate CVE-2026-53380
Install security update from vendor's repository.