{"api_version":"1","generated_at":"2026-06-25T11:33:54+00:00","cve":"CVE-2026-53270","urls":{"html":"https://cve.report/CVE-2026-53270","api":"https://cve.report/api/cve/CVE-2026-53270.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-53270","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-53270"},"summary":{"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":"PUBLISHED","assigner":"Linux","published_at":"2026-06-25 09:16:45","updated_at":"2026-06-25 09:16:45"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/25918720ba97f974a4f8d433b5a0132c5b43f6f3","name":"https://git.kernel.org/stable/c/25918720ba97f974a4f8d433b5a0132c5b43f6f3","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/c6376b9b1b4d2bad638256b1b3588e073344ae69","name":"https://git.kernel.org/stable/c/c6376b9b1b4d2bad638256b1b3588e073344ae69","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/e4feec3174036ba772006be74beee0efa09a9eb8","name":"https://git.kernel.org/stable/c/e4feec3174036ba772006be74beee0efa09a9eb8","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/193989cc6d80dd8e0460fb3992e69fa03bf0ff9b","name":"https://git.kernel.org/stable/c/193989cc6d80dd8e0460fb3992e69fa03bf0ff9b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/d10730a1f2caf08088e0db1b19b242f3e6fa5f06","name":"https://git.kernel.org/stable/c/d10730a1f2caf08088e0db1b19b242f3e6fa5f06","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/7d4f5004511757e3984901ffb412fcf858d80ed5","name":"https://git.kernel.org/stable/c/7d4f5004511757e3984901ffb412fcf858d80ed5","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/19a9493faa4bf3c7bd0a386f30b60b1bb4a3da03","name":"https://git.kernel.org/stable/c/19a9493faa4bf3c7bd0a386f30b60b1bb4a3da03","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/14e4689c113b4c06af1069364ade24fdd7055f33","name":"https://git.kernel.org/stable/c/14e4689c113b4c06af1069364ade24fdd7055f33","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-53270","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53270","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 05f00505a89acd21f5d0d20f5797dfbc4cf85243 d10730a1f2caf08088e0db1b19b242f3e6fa5f06 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 05f00505a89acd21f5d0d20f5797dfbc4cf85243 e4feec3174036ba772006be74beee0efa09a9eb8 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 05f00505a89acd21f5d0d20f5797dfbc4cf85243 7d4f5004511757e3984901ffb412fcf858d80ed5 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 05f00505a89acd21f5d0d20f5797dfbc4cf85243 c6376b9b1b4d2bad638256b1b3588e073344ae69 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4.1.11 4.2 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4.2","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 4.2 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.10.259 5.10.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.210 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.176 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.143 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.94 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.36 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0.13 7.0.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["include/net/ip_vs.h","net/netfilter/ipvs/ip_vs_ctl.c","net/netfilter/ipvs/ip_vs_sched.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"d10730a1f2caf08088e0db1b19b242f3e6fa5f06","status":"affected","version":"05f00505a89acd21f5d0d20f5797dfbc4cf85243","versionType":"git"},{"lessThan":"e4feec3174036ba772006be74beee0efa09a9eb8","status":"affected","version":"05f00505a89acd21f5d0d20f5797dfbc4cf85243","versionType":"git"},{"lessThan":"7d4f5004511757e3984901ffb412fcf858d80ed5","status":"affected","version":"05f00505a89acd21f5d0d20f5797dfbc4cf85243","versionType":"git"},{"lessThan":"c6376b9b1b4d2bad638256b1b3588e073344ae69","status":"affected","version":"05f00505a89acd21f5d0d20f5797dfbc4cf85243","versionType":"git"},{"lessThan":"14e4689c113b4c06af1069364ade24fdd7055f33","status":"affected","version":"05f00505a89acd21f5d0d20f5797dfbc4cf85243","versionType":"git"},{"lessThan":"25918720ba97f974a4f8d433b5a0132c5b43f6f3","status":"affected","version":"05f00505a89acd21f5d0d20f5797dfbc4cf85243","versionType":"git"},{"lessThan":"19a9493faa4bf3c7bd0a386f30b60b1bb4a3da03","status":"affected","version":"05f00505a89acd21f5d0d20f5797dfbc4cf85243","versionType":"git"},{"lessThan":"193989cc6d80dd8e0460fb3992e69fa03bf0ff9b","status":"affected","version":"05f00505a89acd21f5d0d20f5797dfbc4cf85243","versionType":"git"},{"status":"affected","version":"c803fddd2a95a70873c68dbff42d4c59fd2e674e","versionType":"git"},{"status":"affected","version":"4ec8fb23158797affae7993c15beba080488482f","versionType":"git"},{"lessThan":"3.19","status":"affected","version":"3.18.23","versionType":"semver"},{"lessThan":"4.2","status":"affected","version":"4.1.11","versionType":"semver"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["include/net/ip_vs.h","net/netfilter/ipvs/ip_vs_ctl.c","net/netfilter/ipvs/ip_vs_sched.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.2"},{"lessThan":"4.2","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.259","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.210","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.176","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.143","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.94","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.36","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.13","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.259","versionStartIncluding":"4.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.210","versionStartIncluding":"4.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.176","versionStartIncluding":"4.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.143","versionStartIncluding":"4.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.94","versionStartIncluding":"4.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.36","versionStartIncluding":"4.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.13","versionStartIncluding":"4.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1","versionStartIncluding":"4.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.18.23","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.1.11","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"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."}],"providerMetadata":{"dateUpdated":"2026-06-25T08:39:55.830Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/d10730a1f2caf08088e0db1b19b242f3e6fa5f06"},{"url":"https://git.kernel.org/stable/c/e4feec3174036ba772006be74beee0efa09a9eb8"},{"url":"https://git.kernel.org/stable/c/7d4f5004511757e3984901ffb412fcf858d80ed5"},{"url":"https://git.kernel.org/stable/c/c6376b9b1b4d2bad638256b1b3588e073344ae69"},{"url":"https://git.kernel.org/stable/c/14e4689c113b4c06af1069364ade24fdd7055f33"},{"url":"https://git.kernel.org/stable/c/25918720ba97f974a4f8d433b5a0132c5b43f6f3"},{"url":"https://git.kernel.org/stable/c/19a9493faa4bf3c7bd0a386f30b60b1bb4a3da03"},{"url":"https://git.kernel.org/stable/c/193989cc6d80dd8e0460fb3992e69fa03bf0ff9b"}],"title":"ipvs: clear the svc scheduler ptr early on edit","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-53270","datePublished":"2026-06-25T08:39:55.830Z","dateReserved":"2026-06-09T07:44:35.395Z","dateUpdated":"2026-06-25T08:39:55.830Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-06-25 09:16:45","lastModifiedDate":"2026-06-25 09:16:45","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"53270","Ordinal":"1","Title":"ipvs: clear the svc scheduler ptr early on edit","CVE":"CVE-2026-53270","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"53270","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"ipvs: clear the svc scheduler ptr early on edit"}]}}}