{"id":"CVE-2026-43074","summary":"eventpoll: defer struct eventpoll free to RCU grace period","details":"In the Linux kernel, the following vulnerability has been resolved:\n\neventpoll: defer struct eventpoll free to RCU grace period\n\nIn certain situations, ep_free() in eventpoll.c will kfree the epi-\u003eep\neventpoll struct while it still being used by another concurrent thread.\nDefer the kfree() to an RCU callback to prevent UAF.","modified":"2026-07-09T10:14:21.645788497Z","published":"2026-05-06T07:21:58.210Z","related":["SUSE-SU-2026:22433-1","SUSE-SU-2026:22436-1","SUSE-SU-2026:22458-1","SUSE-SU-2026:22460-1","SUSE-SU-2026:2632-1","SUSE-SU-2026:2799-1","SUSE-SU-2026:2800-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43074.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/07712db80857d5d09ae08f3df85a708ecfc3b61f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/5b1173b165421561db29f30afc7e97d940a398a9"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7e8083f5eeedab0f460063b9c2c14c9a4e71a427"},{"type":"WEB","url":"https://git.kernel.org/stable/c/902120be4f44947df6311002addc7faf69bdbff1"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a6566cd33f6f967a7651ebf2ce0dd31572e319cf"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a6d57084372161f86660bc4607784420e00efe2c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ae0bb9c1fb7c2594519aeeb096cf2c3b7837b322"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43074.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-43074"},{"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":"f2451def095c1743adcfcb0cb5dadc86034e162a"},{"fixed":"902120be4f44947df6311002addc7faf69bdbff1"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"a1f93804449d13f97dabd4b996817de4bf1ed67a"},{"fixed":"a6d57084372161f86660bc4607784420e00efe2c"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"58c9b016e12855286370dfb704c08498edbc857a"},{"fixed":"a6566cd33f6f967a7651ebf2ce0dd31572e319cf"},{"fixed":"5b1173b165421561db29f30afc7e97d940a398a9"},{"fixed":"7e8083f5eeedab0f460063b9c2c14c9a4e71a427"},{"fixed":"ae0bb9c1fb7c2594519aeeb096cf2c3b7837b322"},{"fixed":"07712db80857d5d09ae08f3df85a708ecfc3b61f"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-43074.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.4.0"},{"fixed":"6.6.136"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.83"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.24"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"6.19.14"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-43074.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}