CVE-2025-21856
s390/ism: add release function for struct device
CVSS Score
7.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Mar 12, 2025 |
| Last Updated | May 11, 2026 |
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Affected Versions
Linux / Linux
8c81ba20349daf9f7e58bb05a0c12f4b71813a30 < 940d15254d2216b585558bcf36312da50074e711 8c81ba20349daf9f7e58bb05a0c12f4b71813a30 < 0505ff2936f166405d81d0d454a81d9c14124344 8c81ba20349daf9f7e58bb05a0c12f4b71813a30 < e26e8ac27351f457091459a0a355bacd06d5bb2b 8c81ba20349daf9f7e58bb05a0c12f4b71813a30 < 915e34d5ad35a6a9e56113f852ade4a730fb88f0
Linux / Linux
6.3
References
git.kernel.org: https://git.kernel.org/stable/c/940d15254d2216b585558bcf36312da50074e711 git.kernel.org: https://git.kernel.org/stable/c/0505ff2936f166405d81d0d454a81d9c14124344 git.kernel.org: https://git.kernel.org/stable/c/e26e8ac27351f457091459a0a355bacd06d5bb2b git.kernel.org: https://git.kernel.org/stable/c/915e34d5ad35a6a9e56113f852ade4a730fb88f0