CVE-2025-21856 — s390/ism: add release function for struct device
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 d…
Published: 2025-03-12 · CVSS: 7.8 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7