CVE-2023-4273

medium

Description

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.

References

https://dfir.ru/2023/08/23/cve-2023-4273-a-vulnerability-in-the-linux-exfat-driver/

https://bugzilla.redhat.com/show_bug.cgi?id=2221609

https://access.redhat.com/security/cve/CVE-2023-4273

https://access.redhat.com/errata/RHSA-2023:6583

Details

Source: Mitre, NVD

Published: 2023-08-09

Updated: 2024-09-16

Risk Information

CVSS v2

Base Score: 6.5

Vector: CVSS2#AV:L/AC:L/Au:M/C:C/I:C/A:C

Severity: Medium

CVSS v3

Base Score: 6.7

Vector: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Severity: Medium