{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "05f00505a89acd21f5d0d20f5797dfbc4cf85243"
            },
            {
              "fixed": "d10730a1f2caf08088e0db1b19b242f3e6fa5f06"
            },
            {
              "fixed": "e4feec3174036ba772006be74beee0efa09a9eb8"
            },
            {
              "fixed": "7d4f5004511757e3984901ffb412fcf858d80ed5"
            },
            {
              "fixed": "c6376b9b1b4d2bad638256b1b3588e073344ae69"
            },
            {
              "fixed": "14e4689c113b4c06af1069364ade24fdd7055f33"
            },
            {
              "fixed": "25918720ba97f974a4f8d433b5a0132c5b43f6f3"
            },
            {
              "fixed": "19a9493faa4bf3c7bd0a386f30b60b1bb4a3da03"
            },
            {
              "fixed": "193989cc6d80dd8e0460fb3992e69fa03bf0ff9b"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "c803fddd2a95a70873c68dbff42d4c59fd2e674e"
            },
            {
              "last_affected": "4ec8fb23158797affae7993c15beba080488482f"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "3.18.23"
            },
            {
              "fixed": "3.19"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "4.1.11"
            },
            {
              "fixed": "4.2"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.2.0"
            },
            {
              "fixed": "5.10.259"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.210"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.176"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.143"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.94"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.36"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.0.13"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53270.json"
  },
  "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.",
  "id": "CVE-2026-53270",
  "modified": "2026-07-09T03:52:32.213875313Z",
  "published": "2026-06-25T08:39:55.830Z",
  "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"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "ipvs: clear the svc scheduler ptr early on edit"
}