{"id":"CVE-2024-27390","summary":"ipv6: mcast: remove one synchronize_net() barrier in ipv6_mc_down()","details":"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.","modified":"2026-04-02T10:07:56.655764Z","published":"2024-05-01T13:05:12.775Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/27xxx/CVE-2024-27390.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/17ef8efc00b34918b966388b2af0993811895a8c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/26d4bac55750d535f1f0b8790dc26daf6089e373"},{"type":"WEB","url":"https://git.kernel.org/stable/c/5da9a218340a2bc804dc4327e5804392e24a0b88"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7eb06ee5921189812e6b4bfe7b0f1e878be16df7"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9d159d6637ccce25f879d662a480541ef4ba3a50"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a03ede2282ebbd181bd6f5c38cbfcb5765afcd04"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/27xxx/CVE-2024-27390.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-27390"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"f185de28d9ae6c978135993769352e523ee8df06"},{"fixed":"9d159d6637ccce25f879d662a480541ef4ba3a50"},{"fixed":"a03ede2282ebbd181bd6f5c38cbfcb5765afcd04"},{"fixed":"26d4bac55750d535f1f0b8790dc26daf6089e373"},{"fixed":"7eb06ee5921189812e6b4bfe7b0f1e878be16df7"},{"fixed":"5da9a218340a2bc804dc4327e5804392e24a0b88"},{"fixed":"17ef8efc00b34918b966388b2af0993811895a8c"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-27390.json"}}],"schema_version":"1.7.5"}