CVE-2023-39192

MEDIUM
MEDIUM Priority: 0.02 BB Relevance: 32/100
Published: 2023-10-09 Modified: 2026-11-07 First seen: 2026-11-07 Status: active

Attack Surface

Low Complexity No Interaction Conf. Impact

CVSS Vector Breakdown

AV: Local
AC: Low
PR: High
UI: None
S: Unchanged
C: High
I: None
A: High

Description

A flaw was found in the Netfilter subsystem in the Linux kernel. The xt_u32 module did not validate the fields in the xt_u32 structure. This flaw allows a local privileged attacker to trigger an out-of-bounds read by setting the size fields with a value beyond the array boundaries, leading to a crash or information disclosure.

Weakness Classification (1)

Affected Software (3)

VendorProductVersion
fedoraproject fedora 38
linux linux_kernel < 6.6
redhat enterprise_linux 8.0

Bug Bounty Relevance

32 / 100
✓ Low complexity
✓ No user interaction

CVSS Score

6.0 / 10.0 v3.1
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:H

EPSS — Exploitation Probability

0.40%
Raw Score 0.003990
Percentile 34.7%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00399
2026-11-12
0.00399
2026-11-10
0.00399
2026-11-09
0.00399
2026-11-08
0.00399
2026-11-07
0.00399
2026-11-06
0.00399

Intelligence Sources

mitre ref →
nvd ref →