{"id":"CVE-2026-53270","revision":null,"records":[{"revision":"5553c73bf97d4c958fc493011b092a90","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-53270","aliases":[],"title":"ipvs: clear the svc scheduler ptr early on edit","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nipvs: clear the svc scheduler ptr early on edit\n\nip_vs_edit_service() while unbinding the old scheduler clears\nthe svc->scheduler ptr after the scheduler module initiates\nRCU callbacks. This can cause packets to use the old\nscheduler at the time when svc->sched_data is already freed\nafter RCU grace period.\n\nFix it by clearing the ptr early in ip_vs_unbind_scheduler(),\nbefore the done_service method schedules any RCU callbacks.\n\nAlso, if the new scheduler fails to initialize when replacing\nthe old scheduler, try to restore the old scheduler while still\nreturning the error code.","state":0,"publishedAt":"2026-06-25T08:39:55.83+00:00","modifiedAt":"2026-10-19T19:57:32.999+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"unaffected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"include/net/ip_vs.h\",\n \"net/netfilter/ipvs/ip_vs_ctl.c\",\n \"net/netfilter/ipvs/ip_vs_sched.c\"\n ],\n \"versions\": [\n {\n \"version\": \"05f00505a89acd21f5d0d20f5797dfbc4cf85243\",\n \"lessThan\": \"d10730a1f2caf08088e0db1b19b242f3e6fa5f06\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"05f00505a89acd21f5d0d20f5797dfbc4cf85243\",\n \"lessThan\": \"e4feec3174036ba772006be74beee0efa09a9eb8\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"05f00505a89acd21f5d0d20f5797dfbc4cf85243\",\n \"lessThan\": \"7d4f5004511757e3984901ffb412fcf858d80ed5\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"05f00505a89acd21f5d0d20f5797dfbc4cf85243\",\n \"lessThan\": \"c6376b9b1b4d2bad638256b1b3588e073344ae69\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"05f00505a89acd21f5d0d20f5797dfbc4cf85243\",\n \"lessThan\": \"14e4689c113b4c06af1069364ade24fdd7055f33\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"05f00505a89acd21f5d0d20f5797dfbc4cf85243\",\n \"lessThan\": \"25918720ba97f974a4f8d433b5a0132c5b43f6f3\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"05f00505a89acd21f5d0d20f5797dfbc4cf85243\",\n \"lessThan\": \"19a9493faa4bf3c7bd0a386f30b60b1bb4a3da03\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"05f00505a89acd21f5d0d20f5797dfbc4cf85243\",\n \"lessThan\": \"193989cc6d80dd8e0460fb3992e69fa03bf0ff9b\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"c803fddd2a95a70873c68dbff42d4c59fd2e674e\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"4ec8fb23158797affae7993c15beba080488482f\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"3.18.23\",\n \"lessThan\": \"3.19\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"4.1.11\",\n \"lessThan\": \"4.2\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n }\n ]\n }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"affected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"include/net/ip_vs.h\",\n \"net/netfilter/ipvs/ip_vs_ctl.c\",\n \"net/netfilter/ipvs/ip_vs_sched.c\"\n ],\n \"versions\": [\n {\n \"version\": \"4.2\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"4.2\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.10.259\",\n \"lessThanOrEqual\": \"5.10.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.15.210\",\n \"lessThanOrEqual\": \"5.15.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.176\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.143\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.12.94\",\n \"lessThanOrEqual\": \"6.12.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.18.36\",\n \"lessThanOrEqual\": \"6.18.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.0.13\",\n \"lessThanOrEqual\": \"7.0.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.1\",\n \"lessThanOrEqual\": \"*\",\n \"status\": \"unaffected\",\n \"versionType\": \"original_commit_for_fix\"\n }\n ]\n }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/d10730a1f2caf08088e0db1b19b242f3e6fa5f06","https://git.kernel.org/stable/c/e4feec3174036ba772006be74beee0efa09a9eb8","https://git.kernel.org/stable/c/7d4f5004511757e3984901ffb412fcf858d80ed5","https://git.kernel.org/stable/c/c6376b9b1b4d2bad638256b1b3588e073344ae69","https://git.kernel.org/stable/c/14e4689c113b4c06af1069364ade24fdd7055f33","https://git.kernel.org/stable/c/25918720ba97f974a4f8d433b5a0132c5b43f6f3","https://git.kernel.org/stable/c/19a9493faa4bf3c7bd0a386f30b60b1bb4a3da03","https://git.kernel.org/stable/c/193989cc6d80dd8e0460fb3992e69fa03bf0ff9b"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-53270","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-53270","identifiers":["CVE-2026-53270"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all 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