Race condition in Linux kernel - CVE-2026-53108
Published: June 25, 2026
Vulnerability identifier: #VU135188
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-2026-53108
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 powerpc PMD huge page handling when unmapping memory during PMD page migration or device-private THP entry handling. A local user can trigger concurrent move_pages() and munmap() operations to cause a denial of service.
The issue can lead to a kernel BUG in pmdp_huge_get_and_clear_full() on powerpc/64s systems.
How to mitigate CVE-2026-53108
Install security update from vendor's repository.