Vulnerability in Linux

CVE-2025-40203

In the Linux kernel, the following vulnerability has been resolved: listmount: don't call path_put() under namespace semaphore Massage listmount() and make sure we don't call path_put() under the namespace semaphore. If we put the last reference we're fscked.

EPSS: 0.002 (7.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

  • Linux — versions b4c2bea8ceaa50cd42a8f73667389d801a3ecf2d, 6.8, 0

References

Frequently asked questions

What is CVE-2025-40203?
CVE-2025-40203 is a high-severity vulnerability in Linux. CVSS score: 7.8/10. Published 2025-11-12.
How severe is CVE-2025-40203?
High severity. CVSS v3 base score is 7.8 out of 10.