CVE-2026-72243
High
Description
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.
SeverityHigh
CVSS8.4
Exploit probability—
Product
Linux
PublishedAug 15, 2026
First seenAug 15, 2026
How to fix
Update
- Linux Linux11406d0d7e11b4e525bb2ace2c70107031d058da, e507633bf76bccf1a6af27771fb0d6e2862b7eac, d028bc080a0dcd6a7f8e1ae1bd32dda696505ba3, fc633a598206d4f23af782db7c0b5f3a82751d2c, 646ebbc5f2ff9147d084e1213143f091026a611c, 44c74d27d1b9aaa99fa8a83640c1223575262b80 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | cf60af03ca4e71134206809ea892e49b92a88896 ≤ v < 11406d0d7e11b4e525bb2ace2c70107031d058da, cf60af03ca4e71134206809ea892e49b92a88896 ≤ v < e507633bf76bccf1a6af27771fb0d6e2862b7eac, cf60af03ca4e71134206809ea892e49b92a88896 ≤ v < d028bc080a0dcd6a7f8e1ae1bd32dda696505ba3, cf60af03ca4e71134206809ea892e49b92a88896 ≤ v < fc633a598206d4f23af782db7c0b5f3a82751d2c, cf60af03ca4e71134206809ea892e49b92a88896 ≤ v < 646ebbc5f2ff9147d084e1213143f091026a611c, cf60af03ca4e71134206809ea892e49b92a88896 ≤ v < 44c74d27d1b9aaa99fa8a83640c1223575262b80, 3.6 | 11406d0d7e11b4e525bb2ace2c70107031d058da, e507633bf76bccf1a6af27771fb0d6e2862b7eac, d028bc080a0dcd6a7f8e1ae1bd32dda696505ba3, fc633a598206d4f23af782db7c0b5f3a82751d2c, 646ebbc5f2ff9147d084e1213143f091026a611c, 44c74d27d1b9aaa99fa8a83640c1223575262b80 |
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