{"cve":"CVE-2025-40236","nvd":{"published":"2025-12-04T16:16:16.567","modified":"2026-10-19T21:10:00.160","status":"Deferred","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nvirtio-net: zero unused hash fields\n\nWhen GSO tunnel is negotiated virtio_net_hdr_tnl_from_skb() tries to\ninitialize the tunnel metadata but forget to zero unused rxhash\nfields. This may leak information to another side. Fixing this by\nzeroing the unused hash fields.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["https://git.kernel.org/stable/c/b2284768c6b32aa224ca7d0ef0741beb434f03aa","https://git.kernel.org/stable/c/b625d231c66a6041e98817ffc944bf6e4c45b2e3"],"products":[],"source":"nvd","synced_at":"2026-10-21T03:43:09.190223697+00:00"},"epss":{"cve":"CVE-2025-40236","score":0.00186,"percentile":0.0815,"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."]}