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CVE-2021-39254

ntfs-3g: Integer overflow in memmove() leading to heap buffer overflow in ntfs_attr_record_resize()

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Severity

Moderate

Red Hat Product Security

7.8

CVSS 3.1

Review impact separately from score.

Published · August 30, 2021

Updated · June 28, 2026

Description

The ntfs3g package is susceptible to an input validation flaw. A crafted NTFS image with invalid values could trigger an improper check. This incorrect check causes an integer overflow which then leads to a heap overflow. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 7.8
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer