{"cve":"CVE-2025-39951","nvd":{"published":"2025-10-04T08:15:48.380","modified":"2026-10-19T21:10:00.160","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\num: virtio_uml: Fix use-after-free after put_device in probe\n\nWhen register_virtio_device() fails in virtio_uml_probe(),\nthe code sets vu_dev->registered = 1 even though\nthe device was not successfully registered.\nThis can lead to use-after-free or other issues.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8},"cwes":["CWE-416"],"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"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-21T03:43:09.190223697+00:00"},"epss":{"cve":"CVE-2025-39951","score":0.00154,"percentile":0.0444,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}