Improper input validation in Linux kernel - CVE-2026-45864
Published: May 28, 2026
Vulnerability identifier: #VU132628
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-2026-45864
CWE-ID: CWE-20
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 input validation in the ntfs3 file write handling logic when processing valid values during file write operations. A local user can trigger the condition with a crafted write operation to cause a denial of service.
The issue can result in an infinite loop and a hung task condition.
How to mitigate CVE-2026-45864
Install security update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/27b75ca4e51e3e4554dc85dbf1a0246c66106fd3
- https://git.kernel.org/stable/c/4bf3bafb8e0635ed93e3cd4156dcbcc0fb960cb4
- https://git.kernel.org/stable/c/50c822fcb36768f1fb356f05b02a2248ef81936d
- https://git.kernel.org/stable/c/6d93239b4fc479f7c0a412dd196ec0ca2672d14a
- https://git.kernel.org/stable/c/71c8b966ec56e13c02388c1312910588bb49be7a
- https://git.kernel.org/stable/c/a47a2bb9aa6455d5cee1045814a60c749309c92b
- https://git.kernel.org/stable/c/b97e371e5d1c13d722335d46eb8bc1a22b272a0e