What is CVE-2026-23247?

CVE-2026-23247 is a medium-severity vulnerability in Linux. CVSS score: 5.5/10. Published 2026-03-18.

How severe is CVE-2026-23247?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Vulnerability in Linux

CVE-2026-23247

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. Zhouya…

EPSS: 0.000 (4.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Linux — versions 6.19.7, 6.18.17, 7.0
Linux Linux_kernel — versions 4.10.14, 4.11, 7.0

References

416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)

Frequently asked questions

What is CVE-2026-23247?: CVE-2026-23247 is a medium-severity vulnerability in Linux. CVSS score: 5.5/10. Published 2026-03-18.
How severe is CVE-2026-23247?: Medium severity. CVSS v3 base score is 5.5 out of 10.