CVE-2026-53270
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 ol…
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Linux | Linux Kernel | from 3.18.23 before 3.19 from 4.1.11 before 4.2 from 4.2.1 before 5.10.259 from 5.11 before 5.15.210 from 5.16 before 6.1.176 from 6.2 before 6.6.143 |
Weakness classification
References
- NVD record
- CVE.org record
- 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