{"cve":"CVE-2025-21687","nvd":{"published":"2025-02-10T16:15:38.207","modified":"2026-07-30T06:19:12.340","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nvfio/platform: check the bounds of read/write syscalls\n\ncount and offset are passed from user space and not checked, only\noffset is capped to 40 bits, which can be used to read/write out of\nbounds of the device.","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-125","CWE-787"],"references":["https://git.kernel.org/stable/c/1485932496a1b025235af8aa1e21988d6b7ccd54","https://git.kernel.org/stable/c/665cfd1083866f87301bbd232cb8ba48dcf4acce","https://git.kernel.org/stable/c/6bcb8a5b70b80143db9bf12dfa7d53636f824d53","https://git.kernel.org/stable/c/92340e6c5122d823ad064984ef7513eba9204048","https://git.kernel.org/stable/c/9377cdc118cf327248f1a9dde7b87de067681dc9"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:59:18.731010617+00:00"},"epss":{"cve":"CVE-2025-21687","score":0.00235,"percentile":0.14537,"date":"2026-11-01"},"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."]}