{"id":"CVE-2026-23245","summary":"net/sched: act_gate: snapshot parameters with RCU on replace","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: act_gate: snapshot parameters with RCU on replace\n\nThe gate action can be replaced while the hrtimer callback or dump path is\nwalking the schedule list.\n\nConvert the parameters to an RCU-protected snapshot and swap updates under\ntcf_lock, freeing the previous snapshot via call_rcu(). When REPLACE omits\nthe entry list, preserve the existing schedule so the effective state is\nunchanged.","modified":"2026-04-14T03:48:12.896336Z","published":"2026-03-18T10:05:07.406Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23245.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/035d0d09d5ab3ed3e93d18cde2b562a6719eea23"},{"type":"WEB","url":"https://git.kernel.org/stable/c/04d75529dc0f9be78786162ebab7424af4644df2"},{"type":"WEB","url":"https://git.kernel.org/stable/c/58b162e318d0243ad2d7d92456c0873f2494c351"},{"type":"WEB","url":"https://git.kernel.org/stable/c/62413a9c3cb183afb9bb6e94dd68caf4e4145f4c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8b1251bbf0f10ac745ed74bad4d3b433caa1eeae"},{"type":"WEB","url":"https://git.kernel.org/stable/c/dfc314d7c767e350f78a46a8f8b134f80e8ad432"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23245.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-23245"},{"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":"a51c328df3106663879645680609eb49b3ff6444"},{"fixed":"8b1251bbf0f10ac745ed74bad4d3b433caa1eeae"},{"fixed":"dfc314d7c767e350f78a46a8f8b134f80e8ad432"},{"fixed":"035d0d09d5ab3ed3e93d18cde2b562a6719eea23"},{"fixed":"04d75529dc0f9be78786162ebab7424af4644df2"},{"fixed":"58b162e318d0243ad2d7d92456c0873f2494c351"},{"fixed":"62413a9c3cb183afb9bb6e94dd68caf4e4145f4c"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-23245.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.8.0"},{"fixed":"6.1.167"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.130"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.78"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.18"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"6.19.8"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-23245.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"}]}