What is CVE-2026-63980?

CVE-2026-63980 is a high-severity vulnerability in Linux. CVSS score: 7.5/10. Published 2026-07-19.

How severe is CVE-2026-63980?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Linux

CVE-2026-63980

In the Linux kernel, the following vulnerability has been resolved: net/handshake: Use spin_lock_bh for hn_lock nvmet_tcp_state_change(), a socket callback that runs in BH context, can reach handshake_req_cancel() via nvmet_tcp_schedule_…

EPSS: 0.002 (6.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Linux — versions 675b453e024154dd547921c6e6d5b58747ba7e0e, 6.7, 0

References

416baaa9-dc9f-4396-8d5f-8c081fb06d67
416baaa9-dc9f-4396-8d5f-8c081fb06d67
416baaa9-dc9f-4396-8d5f-8c081fb06d67
416baaa9-dc9f-4396-8d5f-8c081fb06d67

Frequently asked questions

What is CVE-2026-63980?: CVE-2026-63980 is a high-severity vulnerability in Linux. CVSS score: 7.5/10. Published 2026-07-19.
How severe is CVE-2026-63980?: High severity. CVSS v3 base score is 7.5 out of 10.