{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-43074","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-05-01T14:12:55.982Z","datePublished":"2026-05-06T07:21:58.210Z","dateUpdated":"2026-05-11T22:17:13.022Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T22:17:13.022Z"},"descriptions":[{"lang":"en","value":"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->ep\neventpoll struct while it still being used by another concurrent thread.\nDefer the kfree() to an RCU callback to prevent UAF."}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH"}}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/eventpoll.c"],"versions":[{"version":"58c9b016e12855286370dfb704c08498edbc857a","lessThan":"a6566cd33f6f967a7651ebf2ce0dd31572e319cf","status":"affected","versionType":"git"},{"version":"58c9b016e12855286370dfb704c08498edbc857a","lessThan":"5b1173b165421561db29f30afc7e97d940a398a9","status":"affected","versionType":"git"},{"version":"58c9b016e12855286370dfb704c08498edbc857a","lessThan":"7e8083f5eeedab0f460063b9c2c14c9a4e71a427","status":"affected","versionType":"git"},{"version":"58c9b016e12855286370dfb704c08498edbc857a","lessThan":"ae0bb9c1fb7c2594519aeeb096cf2c3b7837b322","status":"affected","versionType":"git"},{"version":"58c9b016e12855286370dfb704c08498edbc857a","lessThan":"07712db80857d5d09ae08f3df85a708ecfc3b61f","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/eventpoll.c"],"versions":[{"version":"6.4","status":"affected"},{"version":"0","lessThan":"6.4","status":"unaffected","versionType":"semver"},{"version":"6.6.136","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.83","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.24","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"6.19.14","lessThanOrEqual":"6.19.*","status":"unaffected","versionType":"semver"},{"version":"7.0","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"6.6.136"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"6.12.83"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"6.18.24"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"6.19.14"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"7.0"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/a6566cd33f6f967a7651ebf2ce0dd31572e319cf"},{"url":"https://git.kernel.org/stable/c/5b1173b165421561db29f30afc7e97d940a398a9"},{"url":"https://git.kernel.org/stable/c/7e8083f5eeedab0f460063b9c2c14c9a4e71a427"},{"url":"https://git.kernel.org/stable/c/ae0bb9c1fb7c2594519aeeb096cf2c3b7837b322"},{"url":"https://git.kernel.org/stable/c/07712db80857d5d09ae08f3df85a708ecfc3b61f"}],"title":"eventpoll: defer struct eventpoll free to RCU grace period","x_generator":{"engine":"bippy-1.2.0"}}}}