{"cve":"CVE-2024-27390","nvd":{"published":"2024-05-01T13:15:51.697","modified":"2026-07-24T15:16:55.527","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: mcast: remove one synchronize_net() barrier in ipv6_mc_down()\n\nAs discussed in the past (commit 2d3916f31891 (\"ipv6: fix skb drops\nin igmp6_event_query() and igmp6_event_report()\")) I think the\nsynchronize_net() call in ipv6_mc_down() is not needed.\n\nUnder load, synchronize_net() can last between 200 usec and 5 ms.\n\nKASAN seems to agree as well.","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/17ef8efc00b34918b966388b2af0993811895a8c","https://git.kernel.org/stable/c/26d4bac55750d535f1f0b8790dc26daf6089e373","https://git.kernel.org/stable/c/5da9a218340a2bc804dc4327e5804392e24a0b88","https://git.kernel.org/stable/c/7eb06ee5921189812e6b4bfe7b0f1e878be16df7","https://git.kernel.org/stable/c/9d159d6637ccce25f879d662a480541ef4ba3a50"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:49:08.435428910+00:00"},"epss":{"cve":"CVE-2024-27390","score":0.00223,"percentile":0.12951,"date":"2026-11-01"},"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."]}