CVE-2025-39951

high

Description

In the Linux kernel, the following vulnerability has been resolved: um: virtio_uml: Fix use-after-free after put_device in probe When register_virtio_device() fails in virtio_uml_probe(), the code sets vu_dev->registered = 1 even though the device was not successfully registered. This can lead to use-after-free or other issues.

References

https://git.kernel.org/stable/c/c2ff91255e0157b356cff115d8dc3eeb5162edf2

https://git.kernel.org/stable/c/aaf900a83508c8cd5cdf765e7749f9076196ec7f

https://git.kernel.org/stable/c/7ebf70cf181651fe3f2e44e95e7e5073d594c9c0

https://git.kernel.org/stable/c/5e94e44c9cb30d7a383d8ac227f24a8c9326b770

https://git.kernel.org/stable/c/4f364023ddcfe83f7073b973a9cb98584b7f2a46

https://git.kernel.org/stable/c/14c231959a16ca41bfdcaede72483362a8c645d7

https://git.kernel.org/stable/c/00e98b5a69034b251bb36dc6e7123d7648e218e4

Details

Source: Mitre, NVD

Published: 2025-10-04

Updated: 2025-10-06

Risk Information

CVSS v2

Base Score: 4.6

Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:P/A:P

Severity: Medium

CVSS v3

Base Score: 7.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Severity: High

EPSS

EPSS: 0.00024