SB2026091922 - Integer overflow in Linux kernel ntfs3
Published: September 19, 2026
Security Bulletin ID
SB2026091922
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Partial DoS
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Integer overflow (CVE-ID: CVE-2026-90200)
CWE-ID: CWE-190 - Integer overflow
CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to an integer overflow in MFT cluster validation in ntfs_init_from_boot() when mounting an NTFS volume with crafted boot-sector MFT cluster numbers. A local user can mount a crafted NTFS volume to cause a denial of service.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/169383d8914b8fe03464a83540b5b6de3e7831af
- https://git.kernel.org/stable/c/805cc5554b13d045dce9b03c13eaf015418739fd
- https://git.kernel.org/stable/c/c510c63873103a5da6a498fe537bdb5d6f8d03a2
- https://git.kernel.org/stable/c/dc6d85de7e2656e56e10ff5ba514f2583a4f612b
- https://git.kernel.org/stable/c/f77a8d9fdf58e298b36564a44c27fadc617bdd28