VULNERABILITY INTELLIGENCE

CVE-2023-52631

CVSS score5.5 MEDIUM
EPSS probability0.22%
CISA KEVNot currently listed
Published2024-04-02
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Description

In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: Fix an NULL dereference bug The issue here is when this is called from ntfs_load_attr_list(). The "size" comes from le32_to_cpu(attr->res.data_size) so it can't overflow on a 64bit systems but on 32bit systems the "+ 1023" can overflow and the result is zero. This means that the kmalloc will succeed by returning the ZERO_SIZE_PTR and then the memcpy() will crash with an Oops on the next line.

Weakness classification

  • 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-476

Primary references