CVE-2023-39193 MEDIUM

CVE-2023-39193: Kernel: netfilter: xtables sctp out-of-bounds read in match_flags()

Vendor Red Hat
Product Red Hat Enterprise Linux 6
Weakness CWE-125
Published October 9, 2023
Last update November 6, 2025
View on NVD All CVEs

CVSS base score

6.1/10
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity None

CVSS vector

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

What the vulnerability does

01Description

A flaw was found in the Netfilter subsystem in the Linux kernel. The sctp_mt_check did not validate the flag_count field. This flaw allows a local privileged (CAP_NET_ADMIN) attacker to trigger an out-of-bounds read, leading to a crash or information disclosure.

Key dates

02Disclosure timeline

October 9, 2023 CVE published
November 6, 2025 Record updated