SB2026091921 - Integer overflow in Linux kernel ntfs3
Published: September 19, 2026
Security Bulletin ID
SB2026091921
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Integer overflow (CVE-ID: CVE-2026-90199)
CWE-ID: CWE-190 - Integer overflow
CVSSv4: 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]
The vulnerability allows a local user to bypass validation of malformed NTFS attributes.
The vulnerability exists due to an integer overflow in mi_enum_attr() when processing malformed on-disk non-resident NTFS attributes. A local user can supply an attribute with an end virtual cluster number near U64_MAX to bypass validation of malformed NTFS attributes.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/0441e34ce098c19185a7b52c5b8b89a8a5b26888
- https://git.kernel.org/stable/c/20fd9f64c0050658f2031e6bd5d552c6f0c8f7e3
- https://git.kernel.org/stable/c/2b9a0e57bfd365e2096706b19ae34dce3b4a884b
- https://git.kernel.org/stable/c/7ab69cef49ebdfee288287d62641b24ab1445ecc
- https://git.kernel.org/stable/c/ce9a619c432b9a4044fee115c5483fbed946c131