CVE-2026-89519Medium· 5.5▾ SunlitA flaw was found in the Linux kernel's `sched_ext` component. Due to a logical error where a stale flag (`SCX_RQ_BAL_KEEP`) could be consumed, the scheduler might incorrectly keep a task running even after it has been dequeued. This could …
▾ Sunlit zone — Low / medium · no exploitation signal
impact 30.3 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Sep 12.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CSAF
0.2%
— → 5.5
none → medium
— → 5.5
none → medium
— → 5.5
none → medium
Last analysed / modified upstream
A flaw was found in the Linux kernel's sched_ext component. Due to a logical error where a stale flag (SCX_RQ_BAL_KEEP) could be consumed, the scheduler might incorrectly keep a task running even after it has been dequeued. This could lead to unexpected task management behavior within the kernel.
kernel: sched_ext: Replace SCX_RQ_BAL_KEEP with a dispatch verdict return — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-16.
Not affected:
Refer to the advisory for fix availability.
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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