CVE-2025-39951
Medium
Elevated severity or exploit probability.
CVSS base
7.8
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS — probability of exploitation (30 days)
0.2%
4.6th percentile
CISA KEV
Not listed
Weakness / dates
CWE-416
Published 2025-10-04 · modified 2026-07-30
CVSS breakdown
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
| Attack Vector | L | Local |
| Attack Complexity | L | Low |
| Privileges Required | L | Low |
| User Interaction | N | None |
| Scope | U | Unchanged |
| Confidentiality | H | High |
| Integrity | H | High |
| Availability | H | High |
Timeline
- 2025-10-04 — Published (NVD)
- 2026-07-30 — Last modified (NVD)
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.
Affected
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
- https://git.kernel.org/stable/c/aaf900a83508c8cd5cdf765e7749f9076196ec7f
- https://git.kernel.org/stable/c/c2ff91255e0157b356cff115d8dc3eeb5162edf2