{"cve":"CVE-2022-49975","nvd":{"published":"2025-06-18T11:15:24.893","modified":"2026-06-17T05:19:39.453","status":"Analyzed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Don't redirect packets with invalid pkt_len\n\nSyzbot found an issue [1]: fq_codel_drop() try to drop a flow whitout any\nskbs, that is, the flow->head is null.\nThe root cause, as the [2] says, is because that bpf_prog_test_run_skb()\nrun a bpf prog which redirects empty skbs.\nSo we should determine whether the length of the packet modified by bpf\nprog or others like bpf_prog_test is valid before forwarding it directly.","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":[],"references":["https://git.kernel.org/stable/c/6204bf78b2a903b96ba43afff6abc0b04d6e0462","https://git.kernel.org/stable/c/72f2dc8993f10262092745a88cb2dd0fef094f23","https://git.kernel.org/stable/c/8b68e53d56697a59b5c53893b53f508bbdf272a0","https://git.kernel.org/stable/c/a75987714bd2d8e59840667a28e15c1fa5c47554","https://git.kernel.org/stable/c/fd1894224407c484f652ad456e1ce423e89bb3eb"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:03:23.287444849+00:00"},"epss":{"cve":"CVE-2022-49975","score":0.00266,"percentile":0.18561,"date":"2026-10-31"},"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."]}