CVE-2026-23247

Published: Mar 18, 2026 Last Modified: Mar 18, 2026

ExploitDB:

Other exploit source:

Google Dorks:

AI Translation Available

In the Linux kernel, the following vulnerability has been resolved:

tcp: secure_seq: add back ports to TS offset

This reverts 28ee1b746f49 ('secure_seq: downgrade to per-host timestamp offsets')

tcp_tw_recycle went away in 2017.

Zhouyan Deng reported off-path TCP source port leakage via
SYN cookie side-channel that can be fixed in multiple ways.

One of them is to bring back TCP ports in TS offset randomization.

As a bonus, we perform a single siphash() computation
to provide both an ISN and a TS offset.

https://git.kernel.org/stable/c/165573e41f2f66ef98940cf65f838b2cb575d9d1

https://git.kernel.org/stable/c/46e5b0d7cf55821527adea471ffe52a5afbd9caf

https://git.kernel.org/stable/c/eae2f14ab2efccdb7480fae7d42c4b0116ef8805