CVE-2021-39254: Debian Linux

High severity, CVSS 7.8. EPSS: 0.4% chance of exploitation in the next 30 days.

A crafted NTFS image can cause an integer overflow in memmove, leading to a heap-based buffer overflow in the function ntfs_attr_record_resize, in NTFS-3G < 2021.8.22.

Affected products

• Debian Debian Linux: version 9.0 only; version 10.0 only; version 11.0 only
• Fedoraproject Fedora: version 33 only; version 35 only
• Tuxera Ntfs-3g: before 2021.8.22 (fixed in 2021.8.22)

Published 2021-09-07. Last modified 2026-06-17.