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CVE-2026-23247 Detail

Description

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.


Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/165573e41f2f66ef98940cf65f838b2cb575d9d1 kernel.org
https://git.kernel.org/stable/c/46e5b0d7cf55821527adea471ffe52a5afbd9caf kernel.org
https://git.kernel.org/stable/c/eae2f14ab2efccdb7480fae7d42c4b0116ef8805 kernel.org

Weakness Enumeration

CWE-ID CWE Name Source

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-23247
NVD Published Date:
03/18/2026
NVD Last Modified:
03/18/2026
Source:
kernel.org