Incorrect calculation in Linux kernel - CVE-2026-98373
Published: October 8, 2026
Vulnerability identifier: #VU153952
CSH Severity: Low
CVSS v4: 6.8 [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]
CVE-ID: CVE-2026-98373
CWE-ID: CWE-682
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to incorrect destination address calculation in move_hugetlb_page_tables() when skipping a source page table that is absent initially or after unsharing a PMD table. A local user can invoke mremap() with source and destination addresses at different offsets within their page tables to cause a denial of service.
Affected software
Linux kernel
How to mitigate CVE-2026-98373
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3