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CVE-2026-72243

Last refreshed2026-10-17

Status: UPDATED  |  Advisory ID: CVE-2026-72243

Key Details

CVECVE-2026-72243
CVSS Score / Version
8.4 (High) / CVSS v3.1
Updated2026-10-16
CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
CVSS Prose
attack vector is local; attack complexity is low; privileges required is low; user interaction is none; scope is changed; confidentiality impact is high; integrity impact is high; availability impact is none.
Affected products
Linux Kernel

Affected Products, Subsystems & Sectors

VendorProductAffected VersionsPatch Status
LinuxLinux Kernel
SubsystemsOT Supporting Infrastructure
SectorsAll Sectors

What to Know

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. (NVD)

What to Do

Monitor Linux's web page for any future patch releases.

References

SourceReference
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2026-72243
CVEhttps://www.cve.org/CVERecord?id=CVE-2026-72243

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