fs/ntfs3: Prevent integer overflow in hdr_first_de()
In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: Prevent integer overflow in hdr_first_de() The "de_off" and "used" variables come from the disk so they both need to check. The problem is that on 32bit systems if they're both greater than UINT_MAX - 16 then the check does work as intended because of an integer overflow.
02 / AFFECTED SOFTWARE
Affected packages
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: Prevent integer overflow in hdr_first_de() The "de_off" and "used" variables come from the disk so they both need to check. The problem is that on 32bit systems if they're both greater than UINT_MAX - 16 then the check does work as intended because of an integer overflow.
05 / REFERENCES
Further evidence
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/201a2bdda13b619c4927700ffe47d387a30ced50
- https://git.kernel.org/stable/c/6bb81b94f7a9cba6bde9a905cef52a65317a8b04
- https://git.kernel.org/stable/c/85615aa442830027923fc690390fa74d17b36ae1
- https://git.kernel.org/stable/c/b9982065b82b4177ba3a7a72ce18c84921f7494d
- https://git.kernel.org/stable/c/f6d44b1aa46d317e52c21fb9314cfb20dd69e7b0
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/22xxx/CVE-2025-22080.json
- https://nvd.nist.gov/vuln/detail/CVE-2025-22080