CVE-2026-89520

CVE-2026-89520 is a race condition in the Linux kernel's core scheduling component. When pick_next_task() releases the runqueue lock during task selection, sibling locks become momentarily free, allowing __sched_core_flip(false) to rebind rq_lockp() mid-selection. The selection then resumes on sp...

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...

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-2026-89519

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-2026-89516

In the Linux kernel, the following vulnerability has been resolved: schedext: Don't BUGON a destroyed DSQ in processdeferredreenqusers scxbpfdsqreenq queues a deferred reenq dru that runs from rundeferred, not ops.dispatch. If the DSQ is destroyed before the dru runs, processdeferredreenqusers se...

CVE-2026-89507 RDMA/ucma: Lock the handler in ucma_write_cm_event()

In the Linux kernel, the following vulnerability has been resolved: RDMA/ucma: Lock the handler in ucmawritecmevent ctx-file may only be changed under the handler lock and the xalock, which is what stops uevents being queued for a ctx while ucmamigrateid moves it to another file. The CM core take...

CVE-2026-89508 RDMA/ucma: Lock the handler in ucma_set_ib_path()

In the Linux kernel, the following vulnerability has been resolved: RDMA/ucma: Lock the handler in ucmasetibpath ucmasetibpath calls ucmaeventhandler straight from the write path, without the handler lock that keeps ctx-file stable while a uevent is queued. The handler re-reads ctx-file for every...

EUVD-2026-76414

In the Linux kernel, the following vulnerability has been resolved: RDMA/ucma: Lock the handler in ucmasetibpath ucmasetibpath calls ucmaeventhandler straight from the write path, without the handler lock that keeps ctx-file stable while a uevent is queued. The handler re-reads ctx-file for every...

CVE-2026-89507

A race condition in the Linux kernel's RDMA/ucma subsystem affects the ucma_write_cm_event() function, which re-reads the ctx->file pointer four times without holding the handler lock. This allows ucma_migrate_id() to swap the pointer mid-sequence, leading to list corruption , a kernel BUG (cr...

CVE-2026-89508 RDMA/ucma: Lock the handler in ucma_set_ib_path()

In the Linux kernel, the following vulnerability has been resolved: RDMA/ucma: Lock the handler in ucmasetibpath ucmasetibpath calls ucmaeventhandler straight from the write path, without the handler lock that keeps ctx-file stable while a uevent is queued. The handler re-reads ctx-file for every...

CVE-2026-89507 RDMA/ucma: Lock the handler in ucma_write_cm_event()

In the Linux kernel, the following vulnerability has been resolved: RDMA/ucma: Lock the handler in ucmawritecmevent ctx-file may only be changed under the handler lock and the xalock, which is what stops uevents being queued for a ctx while ucmamigrateid moves it to another file. The CM core take...

EUVD-2026-76413

In the Linux kernel, the following vulnerability has been resolved: RDMA/ucma: Lock the handler in ucmawritecmevent ctx-file may only be changed under the handler lock and the xalock, which is what stops uevents being queued for a ctx while ucmamigrateid moves it to another file. The CM core take...

CVE-2026-89507

In the Linux kernel, the following vulnerability has been resolved: RDMA/ucma: Lock the handler in ucmawritecmevent ctx-file may only be changed under the handler lock and the xalock, which is what stops uevents being queued for a ctx while ucmamigrateid moves it to another file. The CM core take...

CVE-2026-89503

CVE-2026-89503 is a race condition in the Linux kernel's ring-buffer component. The function ring_buffer_alloc_read_page() can race with ring_buffer_subbuf_order_set , causing bpage->order to not match the actual allocated memory. Red Hat notes this mismatch could lead to system instability or...

EUVD-2026-76409

In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Fix subbuf resize race with ringbufferallocreadpage ringbufferallocreadpage is racy with ringbuffersubbuforderset, it can allocate a reader page with an outdated order. This isn't a big issue, the user can still...

CVE-2026-89503 ring-buffer: Fix subbuf resize race with ring_buffer_alloc_read_page()

In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Fix subbuf resize race with ringbufferallocreadpage ringbufferallocreadpage is racy with ringbuffersubbuforderset, it can allocate a reader page with an outdated order. This isn't a big issue, the user can still...

CVE-2026-89503 ring-buffer: Fix subbuf resize race with ring_buffer_alloc_read_page()

In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Fix subbuf resize race with ringbufferallocreadpage ringbufferallocreadpage is racy with ringbuffersubbuforderset, it can allocate a reader page with an outdated order. This isn't a big issue, the user can still...

CVE-2026-89503

In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Fix subbuf resize race with ringbufferallocreadpage ringbufferallocreadpage is racy with ringbuffersubbuforderset, it can allocate a reader page with an outdated order. This isn't a big issue, the user can still...

EUVD-2026-76407

In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Hold cpubuffer::lock when resizing a subbuf Because, ringbuffersubbuforderset can clear cpubuffer-freepage, hold cpubuffer-lock to prevent races with ringbufferallocreadpage and ringbufferfreereadpage...

CVE-2026-89501 ring-buffer: Hold cpu_buffer::lock when resizing a subbuf

In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Hold cpubuffer::lock when resizing a subbuf Because, ringbuffersubbuforderset can clear cpubuffer-freepage, hold cpubuffer-lock to prevent races with ringbufferallocreadpage and ringbufferfreereadpage...