{"cve":"CVE-2026-98251","nvd":{"published":"2026-10-06T09:18:13.567","modified":"2026-10-19T10:18:25.987","status":"Received","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nopenvswitch: avoid reallocating confirmed conntrack labels\n\novs_ct_get_conn_labels() adds the labels extension when a conntrack\nentry does not have one.  Confirmed conntracks can be read locklessly,\nso adding an extension may reallocate and free the extension block\nwhile another CPU accesses it.\n\nOnly add the extension for unconfirmed conntracks.  A confirmed\nconntrack without labels now fails the caller's label operation instead\nof reallocating its extension storage.","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/05eab8dced6bf4d3009a6eeee16ddac99047dc83","https://git.kernel.org/stable/c/2e6dd889c325abf23821e1459c3ffef59b7f0009","https://git.kernel.org/stable/c/3f118c8217c109fd13ca61caa301d72c483897ef","https://git.kernel.org/stable/c/4371d79ea74407fb992c985b1f94391e35bb8289","https://git.kernel.org/stable/c/579d87ec1e1e85729a6cb2c25961e58beb78640c"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:57:46.668721662+00:00"},"epss":{"cve":"CVE-2026-98251","score":0.00129,"percentile":0.02549,"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."]}