CVE-2026-72243

CVE-2026-72243

High · published August 15, 2026

CVSS v3.1
8.4
EPSS
0%
Percentile
5.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.4 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00166 · 5.5th percentile
Published
2026-08-15T10:21Z
References (6)
https://git.kernel.org/stable/c/11406d0d7e11b4e525bb2ace2c70107031d058da · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/44c74d27d1b9aaa99fa8a83640c1223575262b80 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/646ebbc5f2ff9147d084e1213143f091026a611c · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d028bc080a0dcd6a7f8e1ae1bd32dda696505ba3 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e507633bf76bccf1a6af27771fb0d6e2862b7eac · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fc633a598206d4f23af782db7c0b5f3a82751d2c · 416baaa9-dc9f-4396-8d5f-8c081fb06d67
EPSS history
Timeline
  • 15 AUG 05:54Z
    selinux: check connect-related permissions on TCP Fast Open
    cvelistv5