Skip to content

Tools Exploits Blog

Tools Exploits Blog

Hacking, PenTest, and Cybersecurity Tools for Your Security Arsenal!

Loading CVE intelligence

Kitploit is a directory of hacking, cybersecurity, and pentesting tools. Discover the latest project updates to find vulnerabilities, analyze systems, automate testing, and strengthen your security.

Feeds Contact Privacy© 2026 Kitploit

Tool Directory

Categories

View all categories

Loading categories

Back to Exploits

CVE-2026-72243

HighPublished

selinux: check connect-related permissions on TCP Fast Open

Published: Aug 15, 2026
Updated: Oct 16, 2026
Assigning CNA: Linux
Evidence observed: Sep 9, 2026

Primary CVSS

8.4/ 10High

nvd · CVSS 3.1

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

EPSS probability estimate

0.2%

Low · next 30 days

Percentile: 5.4%
Model date: Oct 15, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

In the Linux kernel, the following vulnerability has been resolved: selinux: check connect-related permissions on TCP Fast Open Similar to Landlock, SELinux was not updated when TCP Fast Open support was introduced to ensure connect-related permissions are checked when using TCP Fast Open. Update its socket_sendmsg() hook to call selinux_socket_connect() when MSG_FASTOPEN is passed.

Sources

tfo-connect-bypassPoC
Using TCP Fast Open to bypass syscall-based networking rules (CVE-2026-63828/CVE-2026-72243 PoC)

Responsible use

Use vulnerability information only on systems you own or are authorized to test. Kitploit links to public research metadata and does not store exploit code or malicious payloads.