Race condition in Linux kernel - CVE-2026-46017
Published: May 28, 2026
Vulnerability identifier: #VU132467
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-46017
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 a race condition in the deferred split queue handling during folio migration when processing concurrent rmap-removal and migration operations. A local user can trigger concurrent memory management activity to cause a denial of service.
The issue can trip a kernel WARN and can also cause an underused fully mapped folio to be silently lost from the split queue.
How to mitigate CVE-2026-46017
Install security update from vendor's repository.