CVE-2026-53270High· 7.8▾ TwilightIn 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 initiat…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 42.9 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.1%
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.
Linux >= 05f00505a89acd21f5d0d20f5797dfbc4cf85243 < d10730a1f2caf08088e0db1b19b242f3e6fa5f06Linux >= 05f00505a89acd21f5d0d20f5797dfbc4cf85243 < e4feec3174036ba772006be74beee0efa09a9eb8Linux >= 05f00505a89acd21f5d0d20f5797dfbc4cf85243 < 7d4f5004511757e3984901ffb412fcf858d80ed5Linux >= 05f00505a89acd21f5d0d20f5797dfbc4cf85243 < c6376b9b1b4d2bad638256b1b3588e073344ae69Linux >= 05f00505a89acd21f5d0d20f5797dfbc4cf85243 < 14e4689c113b4c06af1069364ade24fdd7055f33Linux >= 05f00505a89acd21f5d0d20f5797dfbc4cf85243 < 25918720ba97f974a4f8d433b5a0132c5b43f6f3Linux >= 05f00505a89acd21f5d0d20f5797dfbc4cf85243 < 19a9493faa4bf3c7bd0a386f30b60b1bb4a3da03Linux >= 05f00505a89acd21f5d0d20f5797dfbc4cf85243 < 193989cc6d80dd8e0460fb3992e69fa03bf0ff9bLinux c803fddd2a95a70873c68dbff42d4c59fd2e674eLinux 4ec8fb23158797affae7993c15beba080488482fLinux >= 3.18.23 < 3.19Linux >= 4.1.11 < 4.2Linux 4.2Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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