CVE-2025-21745

In the Linux kernel, the following vulnerability has been resolved: blk-cgroup: Fix class @block_class's subsystem refcount leakage blkcg_fill_root_iostats() iterates over @block_class's devices by class_dev_iter_(init|next)(), but does not end iterating with class_dev_iter_exit(), so causes the class's subsystem refcount leakage. Fix by ending the iterating with class_dev_iter_exit().

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/2ce09aabe009453d641a2ceb79e6461a2d4f3876	Patch
https://git.kernel.org/stable/c/38287f779b34dfe959b4b681e909f2d3d52b88be
https://git.kernel.org/stable/c/431b6ef2714be4d5babb802114987541a88b43b0	Patch
https://git.kernel.org/stable/c/67c7f213e052b1aa6caba4a7e25e303bc6997126	Patch
https://git.kernel.org/stable/c/993121481b5a87829f1e8163f47158b72679f309	Patch
https://git.kernel.org/stable/c/d1248436cbef1f924c04255367ff4845ccd9025e	Patch
https://git.kernel.org/stable/c/ffb494f1e7a047bd7a41b13796fcfb08fe5beafb
https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html
https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::

History

No history.

Information

Published : 2025-02-27 03:15

Updated : 2025-11-03 20:17

NVD link : CVE-2025-21745

Mitre link : CVE-2025-21745

CVE.ORG link : CVE-2025-21745

JSON object : View

Products Affected

linux

linux_kernel

CWE

NVD-CWE-Other

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