Improper control of a resource through its lifetime in Linux kernel - CVE-2026-53154
Published: June 26, 2026
Vulnerability identifier: #VU135638
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-2026-53154
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 state management in mm/hugetlb.c hugetlb folio copy paths when handling failed hugetlb folio copy operations. A local user can trigger a failed UFFDIO_COPY operation or a fork-time copy-on-write path failure to cause a denial of service.
The issue can leak a reservation from a private hugetlb VMA reserve map, which may cause a later fault at the same address to take the no-reservation path and receive SIGBUS under hugetlb pool pressure.
How to mitigate CVE-2026-53154
Install security update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/40c81856e622a9dc59294a90d169ac07ea25b0b0
- https://git.kernel.org/stable/c/45e33d43243d71d089af42f5077b8213cee6610f
- https://git.kernel.org/stable/c/8d6e1dd3ad1340cd8b6d554b7aa93d8f0a1c6d38
- https://git.kernel.org/stable/c/c72469ac0f274bde3f0df60a4584e14a123d0aa6
- https://git.kernel.org/stable/c/e47bf16af3c45470ea32f2241fa69aefe0dd61bd