Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ipvs: clear the svc scheduler ptr early on edit ip_vs_edit_service() while unbinding the old scheduler clears the svc->scheduler ptr after the scheduler module initiates RCU callbacks. This can cause packets to use the old scheduler at the time when svc->sched_data is already freed after RCU grace period. Fix it by clearing the ptr early in ip_vs_unbind_scheduler(), before the done_service method schedules any RCU callbacks. Also, if the new scheduler fails to initialize when replacing the old scheduler, try to restore the old scheduler while still returning the error code.
References
- https://git.kernel.org/stable/c/14e4689c113b4c06af1069364ade24fdd7055f33
- https://git.kernel.org/stable/c/193989cc6d80dd8e0460fb3992e69fa03bf0ff9b
- https://git.kernel.org/stable/c/19a9493faa4bf3c7bd0a386f30b60b1bb4a3da03
- https://git.kernel.org/stable/c/25918720ba97f974a4f8d433b5a0132c5b43f6f3
- https://git.kernel.org/stable/c/7d4f5004511757e3984901ffb412fcf858d80ed5
- https://git.kernel.org/stable/c/c6376b9b1b4d2bad638256b1b3588e073344ae69
- https://git.kernel.org/stable/c/d10730a1f2caf08088e0db1b19b242f3e6fa5f06
- https://git.kernel.org/stable/c/e4feec3174036ba772006be74beee0efa09a9eb8
FAQ
What is CVE-2026-53270?
CVE-2026-53270 is a documented vulnerability. In the Linux kernel, the following vulnerability has been resolved: ipvs: clear the svc scheduler ptr early on edit ip_vs_edit_service() while unbinding the old scheduler clears the svc->scheduler p...
How severe is CVE-2026-53270?
CVSS scoring is not yet available for CVE-2026-53270. Check NVD for updates.
Is there a patch for CVE-2026-53270?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.