What is CVE-2025-71088?

CVE-2025-71088 is a medium-severity vulnerability in Linux. CVSS score: 5.5/10. Published 2026-01-13.

How severe is CVE-2025-71088?

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

Vulnerability in Linux

CVE-2025-71088

In the Linux kernel, the following vulnerability has been resolved: mptcp: fallback earlier on simult connection Syzkaller reports a simult-connect race leading to inconsistent fallback status: WARNING: CPU: 3 PID: 33 at net/mptcp/sub…

EPSS: 0.001 (2.2th 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 1e777f39b4d75e599a3aac8e0f67d739474f198c, 6.18.4, 6.2
Linux Linux_kernel — versions 6.2, 6.19

References

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

Frequently asked questions

What is CVE-2025-71088?: CVE-2025-71088 is a medium-severity vulnerability in Linux. CVSS score: 5.5/10. Published 2026-01-13.
How severe is CVE-2025-71088?: Medium severity. CVSS v3 base score is 5.5 out of 10.