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 do_mount_setattr() does not change that. As the result, we can end up leaking userns and possibly mnt_idmap as well.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/0748e553df0225754c316a92af3a77fdc057b358	Patch
https://git.kernel.org/stable/c/142db4e76110dd80239f4e79810f85ea1735ad60	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:6.16:rc1::::::
	cpe:2.3:o:linux:linux_kernel:6.16:rc2::::::
	cpe:2.3:o:linux:linux_kernel:6.16:rc3::::::

History

No history.

Information

Published : 2025-07-09 11:15

Updated : 2025-11-19 21:01

NVD link : CVE-2025-38247

Mitre link : CVE-2025-38247

CVE.ORG link : CVE-2025-38247

JSON object : View

Products Affected

linux

linux_kernel

CWE

NVD-CWE-noinfo

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