Vulnerability record/PUBLISHED/Published Oct 9, 2023 17:57:48 UTC

CVE-2023-39192

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.

Base score6.7/ 10

SeverityMediumCVSS 3.1

Exploitability / impact

CVSS metric breakdown

Vector-derived attributes

Base severityMedium

Attack vectorLocalAV

Attack complexityLowAC

Privileges requiredHighPR

User interactionNoneUI

ScopeChangedS

Confidentiality impactHighC

Integrity impactNoneI

Availability impactLowA

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

CVSS communicates standardized severity and impact characteristics. It does not establish whether a system is exploitable in your specific environment.

Record context

CVE Numbering Authorityredhat

Last updatedNov 7, 2026 11:32:44 UTC

PublishedOct 9, 2023 17:57:48 UTC

ReservedJul 25, 2023 16:01:14 UTC