{"cve":"CVE-2022-49561","nvd":{"published":"2025-02-26T07:01:31.877","modified":"2026-08-04T10:17:51.783","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: conntrack: re-fetch conntrack after insertion\n\nIn case the conntrack is clashing, insertion can free skb->_nfct and\nset skb->_nfct to the already-confirmed entry.\n\nThis wasn't found before because the conntrack entry and the extension\nspace used to free'd after an rcu grace period, plus the race needs\nevents enabled to trigger.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":[],"references":["https://git.kernel.org/stable/c/01989d7eebb61c99bd4b88ebc8e261bd2f02caed","https://git.kernel.org/stable/c/04e4a11dc723c52db7a36dc58f0d69ce6426f8f0","https://git.kernel.org/stable/c/04f9e9104c969d8ce10a4a43634f641ed082092d","https://git.kernel.org/stable/c/56b14ecec97f39118bf85c9ac2438c5a949509ed","https://git.kernel.org/stable/c/91a36ec160ec1a0c8f5352b772dffcbb0b6023e3"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:59:48.811064707+00:00"},"epss":{"cve":"CVE-2022-49561","score":0.0082,"percentile":0.57276,"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."]}