CVE-2026-72243

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxcf60af03ca4e71134206809ea892e49b92a88896 < 11406d0d7e11b4e525bb2ace2c70107031d058daaffected
LinuxLinuxcf60af03ca4e71134206809ea892e49b92a88896 < e507633bf76bccf1a6af27771fb0d6e2862b7eacaffected
LinuxLinuxcf60af03ca4e71134206809ea892e49b92a88896 < d028bc080a0dcd6a7f8e1ae1bd32dda696505ba3affected
LinuxLinuxcf60af03ca4e71134206809ea892e49b92a88896 < fc633a598206d4f23af782db7c0b5f3a82751d2caffected
LinuxLinuxcf60af03ca4e71134206809ea892e49b92a88896 < 646ebbc5f2ff9147d084e1213143f091026a611caffected
LinuxLinuxcf60af03ca4e71134206809ea892e49b92a88896 < 44c74d27d1b9aaa99fa8a83640c1223575262b80affected
LinuxLinux3.6affected
LinuxLinux0 < 3.6unaffected
LinuxLinux6.1.178 <= 6.1.*unaffected
LinuxLinux6.6.145 <= 6.6.*unaffected
LinuxLinux6.12.97 <= 6.12.*unaffected
LinuxLinux6.18.40 <= 6.18.*unaffected
LinuxLinux7.1.5 <= 7.1.*unaffected
LinuxLinux7.2 <= *unaffected

Weaknesses

References