CVE-2023-4273 MEDIUM

CVE-2023-4273: Kernel: exfat: stack overflow in exfat_get_uniname_from_ext_entry

Vendor Red Hat
Product Red Hat Enterprise Linux 6
Weakness CWE-121
Published August 9, 2023
Last update November 14, 2025

CVSS base score

6.0/10
Attack vector Local
Attack complexity Low
Privileges required High
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

A flaw was found in the exFAT driver of the Linux kernel. The vulnerability exists in the implementation of the file name reconstruction function, which is responsible for reading file name entries from a directory index and merging file name parts belonging to one file into a single long file name. Since the file name characters are copied into a stack variable, a local privileged attacker could use this flaw to overflow the kernel stack.

Key dates

02Disclosure timeline

August 9, 2023 CVE published
November 14, 2025 Record updated