{"cve":"CVE-2024-40920","nvd":{"published":"2024-07-12T13:15:15.003","modified":"2026-08-04T11:19:05.353","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: bridge: mst: fix suspicious rcu usage in br_mst_set_state\n\nI converted br_mst_set_state to RCU to avoid a vlan use-after-free\nbut forgot to change the vlan group dereference helper. Switch to vlan\ngroup RCU deref helper to fix the suspicious rcu usage warning.","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":["CWE-416"],"references":["https://git.kernel.org/stable/c/406bfc04b01ee47e4c626f77ecc7d9f85135b166","https://git.kernel.org/stable/c/546ceb1dfdac866648ec959cbc71d9525bd73462","https://git.kernel.org/stable/c/7caefa2771722e65496d85b62e1dc4442b7d1345","https://git.kernel.org/stable/c/caaa2129784a04dcade0ea92c12e6ff90bbd23d8","https://git.kernel.org/stable/c/406bfc04b01ee47e4c626f77ecc7d9f85135b166"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:52:42.518321223+00:00"},"epss":{"cve":"CVE-2024-40920","score":0.00414,"percentile":0.35705,"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."]}