Always-Incorrect Control Flow Implementation in Linux kernel - CVE-2026-53155
Published: June 26, 2026
Vulnerability identifier: #VU135639
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-2026-53155
CWE-ID: CWE-670
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 handling of device-private PMD entry flags in set_pmd_migration_entry() in mm/huge_memory.c when processing device-private huge page migration entries. A local user can trigger page migration and write activity on a crafted memory range to cause a denial of service.
The issue can corrupt rmap state and trigger a kernel assertion during migration of device-private THP ranges.
How to mitigate CVE-2026-53155
Install security update from vendor's repository.