{"id":"CVE-2026-53270","summary":"ipvs: clear the svc scheduler ptr early on edit","details":"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-\u003escheduler ptr after the scheduler module initiates\nRCU callbacks. This can cause packets to use the old\nscheduler at the time when svc-\u003esched_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.","modified":"2026-07-09T21:00:28.137910928Z","published":"2026-06-25T08:39:55.830Z","related":["CGA-m394-pjcq-vcpc"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53270.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/14e4689c113b4c06af1069364ade24fdd7055f33"},{"type":"WEB","url":"https://git.kernel.org/stable/c/193989cc6d80dd8e0460fb3992e69fa03bf0ff9b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/19a9493faa4bf3c7bd0a386f30b60b1bb4a3da03"},{"type":"WEB","url":"https://git.kernel.org/stable/c/25918720ba97f974a4f8d433b5a0132c5b43f6f3"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7d4f5004511757e3984901ffb412fcf858d80ed5"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c6376b9b1b4d2bad638256b1b3588e073344ae69"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d10730a1f2caf08088e0db1b19b242f3e6fa5f06"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e4feec3174036ba772006be74beee0efa09a9eb8"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53270.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53270"},{"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":"05f00505a89acd21f5d0d20f5797dfbc4cf85243"},{"fixed":"d10730a1f2caf08088e0db1b19b242f3e6fa5f06"},{"fixed":"e4feec3174036ba772006be74beee0efa09a9eb8"},{"fixed":"7d4f5004511757e3984901ffb412fcf858d80ed5"},{"fixed":"c6376b9b1b4d2bad638256b1b3588e073344ae69"},{"fixed":"14e4689c113b4c06af1069364ade24fdd7055f33"},{"fixed":"25918720ba97f974a4f8d433b5a0132c5b43f6f3"},{"fixed":"19a9493faa4bf3c7bd0a386f30b60b1bb4a3da03"},{"fixed":"193989cc6d80dd8e0460fb3992e69fa03bf0ff9b"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"0"},{"last_affected":"c803fddd2a95a70873c68dbff42d4c59fd2e674e"},{"last_affected":"4ec8fb23158797affae7993c15beba080488482f"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"3.18.23"},{"fixed":"3.19"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"4.1.11"},{"fixed":"4.2"}]}],"versions":["v4.1.10","v3.18.22","v4.1.9","v4.1.8","v4.1.7","v4.1.6","v3.18.21","v3.18.20","v4.0-rc5","v4.1.5","v4.1.4","v3.18.19","v4.1.3","v4.1.2","v4.1-rc2","v4.1","v3.18.18","v4.1.1","v4.1-rc1","v3.18.17","v4.1-rc8","v4.1-rc7","v4.1-rc6","v3.18.16","v3.18.15","v4.1-rc3","v4.1-rc4","v4.0","v4.1-rc5","v3.18.14","v3.18.13","v4.0-rc1","v3.18.12","v4.0-rc2","v4.0-rc7","v3.18.11","v4.0-rc3","v4.0-rc6","v4.0-rc4","v3.19","v3.18.10","v3.18.9","v3.18.8","v3.18.7","v3.19-rc7","v3.19-rc5","v3.19-rc1","v3.18.6","v3.18.5","v3.19-rc6","v3.19-rc4","v3.18.4","v3.18.3","v3.18-rc1","v3.19-rc3","v3.19-rc2","v3.18.2","v3.18.1","v3.18","v3.18-rc7","v3.18-rc6","v3.18-rc2","v3.18-rc3","v3.18-rc4","v3.18-rc5","v3.17","v3.17-rc1","v3.17-rc7","v3.17-rc2","v3.17-rc4","v3.16","v3.17-rc5","v3.17-rc6","v3.17-rc3","v3.16-rc7","v3.16-rc1","v3.16-rc3","v3.16-rc5","v3.16-rc6","v3.16-rc2","v3.16-rc4","v3.13","v3.15","v3.15-rc5","v3.15-rc8","v3.15-rc1","v3.15-rc6","v3.15-rc3","v3.15-rc7","v3.15-rc2","v3.15-rc4","v3.14","v3.14-rc4","v3.14-rc8","v3.14-rc7","v3.14-rc6","v3.14-rc1","v3.14-rc2","v3.14-rc5","v3.14-rc3","v3.13-rc6","v3.13-rc8","v3.12","v3.13-rc7","v3.13-rc1","v3.13-rc4","v3.13-rc3","v3.13-rc5","v3.13-rc2","v3.12-rc7","v3.12-rc3","v3.12-rc6","v3.12-rc1","v3.12-rc5","v3.11","v3.12-rc2","v3.12-rc4","v3.11-rc7","v3.11-rc2","v3.11-rc5","v3.11-rc1","v3.11-rc3","v3.11-rc4","v3.11-rc6","v3.10-rc2","v3.10","v3.10-rc7","v3.10-rc6","v3.10-rc1","v3.10-rc5","v3.10-rc3","v3.10-rc4","v3.9","v3.9-rc2","v3.9-rc7","v3.9-rc8","v3.9-rc3","v3.9-rc6","v3.9-rc5","v3.9-rc4","v3.9-rc1","v3.8","v3.8-rc7","v3.8-rc6","v3.8-rc5","v3.8-rc2","v3.8-rc1","v3.8-rc3","v3.8-rc4","v3.7","v3.7-rc1","v3.6","v3.7-rc6","v3.7-rc7","v3.7-rc3","v3.7-rc8","v3.7-rc2","v3.7-rc4","v3.7-rc5","v3.6-rc7","v3.6-rc1","v3.5-rc3","v3.6-rc6","v3.6-rc5","v3.5","v3.6-rc3","v3.6-rc4","v3.6-rc2","v3.4-rc4","v3.5-rc7","v3.5-rc5","v3.5-rc6","v3.5-rc2","v3.5-rc1","v3.5-rc4","v3.4","v3.4-rc2","v3.4-rc1","v3.4-rc7","v3.4-rc6","v3.4-rc3","v3.4-rc5","v3.3","v3.3-rc6","v3.3-rc3","v3.3-rc7","v3.3-rc2","v3.3-rc5","v3.2","v3.3-rc4","v3.3-rc1","v3.2-rc4","v3.2-rc7","v3.2-rc6","v3.2-rc5","v3.2-rc3","v3.1","v3.2-rc2","v3.2-rc1","v3.1-rc1","v3.1-rc9","v3.1-rc8","v3.1-rc10","v3.1-rc7","v3.1-rc3","v3.1-rc2","v3.1-rc4","v3.1-rc5","v3.0","v3.1-rc6","v3.0-rc7","v3.0-rc4","v3.0-rc6","v3.0-rc5","v3.0-rc3","v3.0-rc1","v2.6.39","v3.0-rc2","v2.6.38","v2.6.39-rc2","v2.6.39-rc7","v2.6.39-rc5","v2.6.39-rc1","v2.6.38-rc7","v2.6.39-rc6","v2.6.39-rc4","v2.6.39-rc3","v2.6.37","v2.6.38-rc1","v2.6.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