Improper Validation of Specified Quantity in Input in Linux kernel - CVE-2026-98135
Published: September 28, 2026
Vulnerability identifier: #VU152319
CSH Severity: Low
CVSS v4: 0 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-98135
CWE-ID: CWE-1284
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to trigger undefined behavior in the kernel.
The vulnerability exists due to improper validation of a specified quantity in NTFS boot sector validation when parsing a crafted NTFS boot sector. A local user can provide an NTFS boot sector with an invalid sectors_per_cluster value to trigger undefined behavior in the kernel.
Affected software
Linux kernel
How to mitigate CVE-2026-98135
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3