CVE-2025-21856

In the Linux kernel, the following vulnerability has been resolved: s390/ism: add release function for struct device According to device_release() in /drivers/base/core.c, a device without a release function is a broken device and must be fixed. The current code directly frees the device after calling device_add() without waiting for other kernel parts to release their references. Thus, a reference could still be held to a struct device, e.g., by sysfs, leading to potential use-after-free issues if a proper release function is not set.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/0505ff2936f166405d81d0d454a81d9c14124344	Patch
https://git.kernel.org/stable/c/915e34d5ad35a6a9e56113f852ade4a730fb88f0	Patch
https://git.kernel.org/stable/c/940d15254d2216b585558bcf36312da50074e711	Patch
https://git.kernel.org/stable/c/e26e8ac27351f457091459a0a355bacd06d5bb2b	Patch

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:6.14:rc1::::::
	cpe:2.3:o:linux:linux_kernel:6.14:rc2::::::
	cpe:2.3:o:linux:linux_kernel:6.14:rc3::::::

History

No history.

Information

Published : 2025-03-12 10:15

Updated : 2025-10-01 20:18

NVD link : CVE-2025-21856

Mitre link : CVE-2025-21856

CVE.ORG link : CVE-2025-21856

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-416

Use After Free

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