CVE-2025-39951

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.

CVSS 3.1

7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

0.2% chance of exploitation in the next 30 days; higher than 4% of CVEs (scores of 2026-10-25)

CWE

CWE-416

Published

2025-10-04

Modified

2026-10-19

Record from

the NVD, synced 2026-10-21

Affected

• linux:linux_kernel

References

• https://git.kernel.org/stable/c/00e98b5a69034b251bb36dc6e7123d7648e218e4
• https://git.kernel.org/stable/c/14c231959a16ca41bfdcaede72483362a8c645d7
• https://git.kernel.org/stable/c/4f364023ddcfe83f7073b973a9cb98584b7f2a46
• https://git.kernel.org/stable/c/5e94e44c9cb30d7a383d8ac227f24a8c9326b770
• https://git.kernel.org/stable/c/7ebf70cf181651fe3f2e44e95e7e5073d594c9c0

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