CVE-2026-89520

A flaw was found in the Linux kernel's core scheduling component. A race condition can occur when core scheduling flips complete during task selection, leading to incorrect lock handling. This can result in a resource leak and system instability, potentially causing a denial of service...

CVE-2026-89517

A flaw was found in the Linux kernel's schedext component, which handles core scheduling. When multiple selections on the same core interleave due to a dropped lock, they can corrupt the scheduling state. This corruption can lead to a NULL dereference, tasks remaining active after being dequeued,...

CVE-2026-89521

A flaw was found in the Linux kernel's core scheduling component. This issue occurs when the picktask function releases the run queue rq lock, allowing an interleaving selection to invalidate the scheduler's internal state. This inconsistency can lead to incorrect task selection and skewed resour...

CVE-2026-89518

A flaw was found in the Linux kernel's schedext component. Under core scheduling, incorrect assumptions in dispatch kfuncs regarding thisrq can lead to a deadlock. This occurs when an rq lock is acquired on a CPU different from the dispatched rq's, potentially causing the system to become...

CVE-2026-89519

In the Linux kernel, the following vulnerability has been resolved: schedext: Replace SCXRQBALKEEP with a dispatch verdict return SCXRQBALKEEP tells the pick to keep running the previous task, a leftover from when balancing and picking were separate operations. An rq-level flag only works while...

CVE-2026-89520

In the Linux kernel, the following vulnerability has been resolved: sched/core: Make core-sched flips wait for in-flight selections Core scheduling's picknexttask operates on all sibling rqs under one acquisition of the shared core-wide lock. A -picktask that releases the rq lock leaves every...

CVE-2026-89518

In the Linux kernel, the following vulnerability has been resolved: schedext: Fix thisrq assumptions in dispatch kfuncs Under core scheduling, dispatch runs from within the core-wide pick and can target a sibling rq, so ops.dispatch may execute on a CPU different from the dispatched rq's. Several...

CVE-2026-89521

In the Linux kernel, the following vulnerability has been resolved: sched/core: Handle picktask releasing the rq lock Core scheduling's picknexttask breaks when a -picktask implementation can release the rq lock. The selection state derived on entry is only valid while the lock is held...

CVE-2026-89517

In the Linux kernel, the following vulnerability has been resolved: schedext: Fix rq-corepick corruption under core scheduling Core scheduling's picknexttask picks what to run on every SMT sibling of the core in a single pass under the shared core-wide rq lock. The selection state is consistent...

CVE-2026-89521

CVE-2026-89521 affects the Linux kernel scheduler (sched/core ). The vulnerability is in core scheduling's pick_next_task() : when a ->pick_task() implementation can release the rq lock, the selection state derived on entry becomes invalid. This can cause the single-CPU fast path to commit an ...

EUVD-2026-76427

In the Linux kernel, the following vulnerability has been resolved: sched/core: Handle picktask releasing the rq lock Core scheduling's picknexttask breaks when a -picktask implementation can release the rq lock. The selection state derived on entry is only valid while the lock is held...

CVE-2026-89521 sched/core: Handle pick_task() releasing the rq lock

In the Linux kernel, the following vulnerability has been resolved: sched/core: Handle picktask releasing the rq lock Core scheduling's picknexttask breaks when a -picktask implementation can release the rq lock. The selection state derived on entry is only valid while the lock is held...

CVE-2026-89520

CVE-2026-89520 affects the Linux kernel's core scheduling subsystem (sched/core). The root cause is a lock-ordering bug in pick_next_task(): when a ->pick_task() call releases the rq lock mid-selection, every sibling __lock becomes momentarily free, allowing __sched_core_flip(false) to complet...

EUVD-2026-76426

In the Linux kernel, the following vulnerability has been resolved: sched/core: Make core-sched flips wait for in-flight selections Core scheduling's picknexttask operates on all sibling rqs under one acquisition of the shared core-wide lock. A -picktask that releases the rq lock leaves every...

CVE-2026-89520 sched/core: Make core-sched flips wait for in-flight selections

In the Linux kernel, the following vulnerability has been resolved: sched/core: Make core-sched flips wait for in-flight selections Core scheduling's picknexttask operates on all sibling rqs under one acquisition of the shared core-wide lock. A -picktask that releases the rq lock leaves every...

EUVD-2026-76424

In the Linux kernel, the following vulnerability has been resolved: schedext: Fix thisrq assumptions in dispatch kfuncs Under core scheduling, dispatch runs from within the core-wide pick and can target a sibling rq, so ops.dispatch may execute on a CPU different from the dispatched rq's. Several...

CVE-2026-89519 sched_ext: Replace SCX_RQ_BAL_KEEP with a dispatch verdict return

In the Linux kernel, the following vulnerability has been resolved: schedext: Replace SCXRQBALKEEP with a dispatch verdict return SCXRQBALKEEP tells the pick to keep running the previous task, a leftover from when balancing and picking were separate operations. An rq-level flag only works while...

CVE-2026-89518 sched_ext: Fix this_rq() assumptions in dispatch kfuncs

In the Linux kernel, the following vulnerability has been resolved: schedext: Fix thisrq assumptions in dispatch kfuncs Under core scheduling, dispatch runs from within the core-wide pick and can target a sibling rq, so ops.dispatch may execute on a CPU different from the dispatched rq's. Several...

CVE-2026-89518

This CVE affects the Linux kernel 's sched_ext (BPF scheduler extension) subsystem. Under core scheduling , ops.dispatch() may execute on a CPU different from the dispatched run queue's, but several kfunc paths incorrectly assumed this_rq() always coincides with the dispatched rq. Specifically, s...

EUVD-2026-76425

In the Linux kernel, the following vulnerability has been resolved: schedext: Replace SCXRQBALKEEP with a dispatch verdict return SCXRQBALKEEP tells the pick to keep running the previous task, a leftover from when balancing and picking were separate operations. An rq-level flag only works while...