CVE-2025-21856
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2025-21856
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-21856.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2025-21856
- Downstream
- Related
- Published
- 2025-03-12T10:15:18Z
- Modified
- 2025-03-13T21:18:08Z
- Severity
-
- 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- [none]
- Details
-
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.
- References
-
- https://git.kernel.org/stable/c/0505ff2936f166405d81d0d454a81d9c14124344
- https://git.kernel.org/stable/c/915e34d5ad35a6a9e56113f852ade4a730fb88f0
- https://git.kernel.org/stable/c/940d15254d2216b585558bcf36312da50074e711
- https://git.kernel.org/stable/c/e26e8ac27351f457091459a0a355bacd06d5bb2b
- https://security-tracker.debian.org/tracker/CVE-2025-21856
Affected packages
Debian:13 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source