{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-53270", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-06-09T07:44:35.395Z", "datePublished": "2026-06-25T08:39:55.830Z", "dateUpdated": "2026-06-28T06:41:14.263Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-06-28T06:41:14.263Z"}, "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."}], "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": ["include/net/ip_vs.h", "net/netfilter/ipvs/ip_vs_ctl.c", "net/netfilter/ipvs/ip_vs_sched.c"], "versions": [{"version": "05f00505a89acd21f5d0d20f5797dfbc4cf85243", "lessThan": "d10730a1f2caf08088e0db1b19b242f3e6fa5f06", "status": "affected", "versionType": "git"}, {"version": "05f00505a89acd21f5d0d20f5797dfbc4cf85243", "lessThan": "e4feec3174036ba772006be74beee0efa09a9eb8", "status": "affected", "versionType": "git"}, {"version": "05f00505a89acd21f5d0d20f5797dfbc4cf85243", "lessThan": "7d4f5004511757e3984901ffb412fcf858d80ed5", "status": "affected", "versionType": "git"}, {"version": "05f00505a89acd21f5d0d20f5797dfbc4cf85243", "lessThan": "c6376b9b1b4d2bad638256b1b3588e073344ae69", "status": "affected", "versionType": "git"}, {"version": "05f00505a89acd21f5d0d20f5797dfbc4cf85243", "lessThan": "14e4689c113b4c06af1069364ade24fdd7055f33", "status": "affected", "versionType": "git"}, {"version": "05f00505a89acd21f5d0d20f5797dfbc4cf85243", "lessThan": "25918720ba97f974a4f8d433b5a0132c5b43f6f3", "status": "affected", "versionType": "git"}, {"version": "05f00505a89acd21f5d0d20f5797dfbc4cf85243", "lessThan": "19a9493faa4bf3c7bd0a386f30b60b1bb4a3da03", "status": "affected", "versionType": "git"}, {"version": "05f00505a89acd21f5d0d20f5797dfbc4cf85243", "lessThan": "193989cc6d80dd8e0460fb3992e69fa03bf0ff9b", "status": "affected", "versionType": "git"}, {"version": "c803fddd2a95a70873c68dbff42d4c59fd2e674e", "status": "affected", "versionType": "git"}, {"version": "4ec8fb23158797affae7993c15beba080488482f", "status": "affected", "versionType": "git"}, {"version": "3.18.23", "lessThan": "3.19", "status": "affected", "versionType": "semver"}, {"version": "4.1.11", "lessThan": "4.2", "status": "affected", "versionType": "semver"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["include/net/ip_vs.h", "net/netfilter/ipvs/ip_vs_ctl.c", "net/netfilter/ipvs/ip_vs_sched.c"], "versions": [{"version": "4.2", "status": "affected"}, {"version": "0", "lessThan": "4.2", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.259", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.210", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.176", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.143", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.94", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.36", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.13", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1", "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": "4.2", "versionEndExcluding": "5.10.259"}, 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scheduler ptr early on edit", "x_generator": {"engine": "bippy-1.2.0"}}}}

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{"bugzilla": {"description": "kernel: ipvs: clear the svc scheduler ptr early on edit", "id": "2492853", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492853"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-825", "details": ["A flaw was found in the Linux kernel's IP Virtual Server (IPVS) component. During the `ip_vs_edit_service()` operation, the `svc->scheduler` pointer is cleared too late when unbinding an old scheduler. This improper handling allows packets to access previously freed scheduler data, leading to a use-after-free vulnerability. This can result in system instability or a denial of service."], "name": "CVE-2026-53270", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-06-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-53270\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-53270\nhttps://lore.kernel.org/linux-cve-announce/2026062518-CVE-2026-53270-0981@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[05f00505a89acd21f5d0d20f5797dfbc4cf85243,d10730a1f2caf08088e0db1b19b242f3e6fa5f06)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[05f00505a89acd21f5d0d20f5797dfbc4cf85243,e4feec3174036ba772006be74beee0efa09a9eb8)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[05f00505a89acd21f5d0d20f5797dfbc4cf85243,7d4f5004511757e3984901ffb412fcf858d80ed5)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[05f00505a89acd21f5d0d20f5797dfbc4cf85243,c6376b9b1b4d2bad638256b1b3588e073344ae69)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[05f00505a89acd21f5d0d20f5797dfbc4cf85243,14e4689c113b4c06af1069364ade24fdd7055f33)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[05f00505a89acd21f5d0d20f5797dfbc4cf85243,25918720ba97f974a4f8d433b5a0132c5b43f6f3)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[05f00505a89acd21f5d0d20f5797dfbc4cf85243,19a9493faa4bf3c7bd0a386f30b60b1bb4a3da03)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[05f00505a89acd21f5d0d20f5797dfbc4cf85243,193989cc6d80dd8e0460fb3992e69fa03bf0ff9b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "c803fddd2a95a70873c68dbff42d4c59fd2e674e"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "4ec8fb23158797affae7993c15beba080488482f"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[3.18.23,3.19)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[4.1.11,4.2)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "4.2"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,4.2)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[5.10.259,5.10.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[5.15.210,5.15.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.1.176,6.1.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.6.143,6.6.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.12.94,6.12.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.18.36,6.18.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.0.13,7.0.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-06-25T13:15:03.761696+00:00", "updated": "2026-06-28T14:15:08.477277+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}