What is CVE-2025-38247?

CVE-2025-38247 is a medium-severity vulnerability in Linux. CVSS score: 5.5/10. Published 2025-07-09.

How severe is CVE-2025-38247?

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

Vulnerability in Linux

CVE-2025-38247

In the Linux kernel, the following vulnerability has been resolved: userns and mnt_idmap leak in open_tree_attr(2) Once want_mount_setattr() has returned a positive, it does require finish_mount_kattr() to release ->mnt_userns. Failing…

EPSS: 0.001 (2.1th 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 c4a16820d90199409c9bf01c4f794e1e9e8d8fd8, 6.15, 0
Linux Linux_kernel — versions 6.16

References

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

Frequently asked questions

What is CVE-2025-38247?: CVE-2025-38247 is a medium-severity vulnerability in Linux. CVSS score: 5.5/10. Published 2025-07-09.
How severe is CVE-2025-38247?: Medium severity. CVSS v3 base score is 5.5 out of 10.