{"cve":"CVE-2021-3655","nvd":{"published":"2021-08-05T21:15:13.707","modified":"2026-10-08T21:17:40.797","status":"Modified","description":"A vulnerability was found in the Linux kernel in versions prior to v5.14-rc1. Missing size validations on inbound SCTP packets may allow the kernel to read uninitialized memory.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","score":3.3},"cwes":["CWE-20","CWE-909"],"references":["https://bugzilla.redhat.com/show_bug.cgi?id=1984024","https://lists.debian.org/debian-lts-announce/2021/10/msg00010.html","https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html","https://bugzilla.redhat.com/show_bug.cgi?id=1984024","https://lists.debian.org/debian-lts-announce/2021/10/msg00010.html"],"products":["debian:debian_linux","linux:linux_kernel","redhat:enterprise_linux"],"source":"nvd","synced_at":"2026-10-19T21:21:13.713336758+00:00"},"epss":{"cve":"CVE-2021-3655","score":0.00308,"percentile":0.23396,"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."]}