CVE-2026-43418

In the Linux kernel, the following vulnerability has been resolved: sched/mmcid: Prevent CID stalls due to concurrent forks A newly forked task is accounted as MMCID user before the task is visible in the process' thread list and the global task list. This creates the following problem: CPU1 CPU2...

CVE-2026-43417

In the Linux kernel, the following vulnerability has been resolved: sched/mmcid: Handle vfork/CLONEVM correctly Matthieu and Jiri reported stalls where a task endlessly loops in mmgetcid when scheduling in. It turned out that the logic which handles vfork'ed tasks is broken. It is invoked when th...

CVE-2026-43439

In the Linux kernel, the following vulnerability has been resolved: cgroup: fix race between task migration and iteration When a task is migrated out of a cssset, cgroupmigrateaddtask first moves it from cset-tasks to cset-mgtasks via: listmovetail&task-cglist, &cset-mgtasks; If a csstaskiter...

UBUNTU-CVE-2026-43439

In the Linux kernel, the following vulnerability has been resolved: cgroup: fix race between task migration and iteration When a task is migrated out of a cssset, cgroupmigrateaddtask first moves it from cset-tasks to cset-mgtasks via: listmovetail&task-cglist, &cset-mgtasks; If a csstaskiter...

UBUNTU-CVE-2026-43418

In the Linux kernel, the following vulnerability has been resolved: sched/mmcid: Prevent CID stalls due to concurrent forks A newly forked task is accounted as MMCID user before the task is visible in the process' thread list and the global task list. This creates the following problem: CPU1 CPU2...

CVE-2026-43439 cgroup: fix race between task migration and iteration

In the Linux kernel, the following vulnerability has been resolved: cgroup: fix race between task migration and iteration When a task is migrated out of a cssset, cgroupmigrateaddtask first moves it from cset-tasks to cset-mgtasks via: listmovetail&task-cglist, &cset-mgtasks; If a csstaskiter...

CVE-2026-43439

In the Linux kernel, the following vulnerability has been resolved: cgroup: fix race between task migration and iteration When a task is migrated out of a cssset, cgroupmigrateaddtask first moves it from cset-tasks to cset-mgtasks via: listmovetail&task-;cglist, &cset-;mgtasks; If a csstaskiter...

CVE-2026-43439

CVE-2026-43439 : In the Linux kernel, a race between task migration and iteration in cgroup can cause iterators to skip tasks when a task migrates from cset->tasks to cset->mg_tasks. The patch adds a call to css_set_skip_task_iters() before unlinking the task from cset->tasks, advancing ...

CVE-2026-43439

In the Linux kernel, the following vulnerability has been resolved: cgroup: fix race between task migration and iteration When a task is migrated out of a cssset, cgroupmigrateaddtask first moves it from cset-tasks to cset-mgtasks via: listmovetail&task-cglist, &cset-mgtasks; If a csstaskiter...

CVE-2026-43439 cgroup: fix race between task migration and iteration

In the Linux kernel, the following vulnerability has been resolved: cgroup: fix race between task migration and iteration When a task is migrated out of a cssset, cgroupmigrateaddtask first moves it from cset-tasks to cset-mgtasks via: listmovetail&task-cglist, &cset-mgtasks; If a csstaskiter...

CVE-2026-43418 sched/mmcid: Prevent CID stalls due to concurrent forks

In the Linux kernel, the following vulnerability has been resolved: sched/mmcid: Prevent CID stalls due to concurrent forks A newly forked task is accounted as MMCID user before the task is visible in the process' thread list and the global task list. This creates the following problem: CPU1 CPU2...

CVE-2026-43418

In the Linux kernel, the following vulnerability has been resolved: sched/mmcid: Prevent CID stalls due to concurrent forks A newly forked task is accounted as MMCID user before the task is visible in the process' thread list and the global task list. This creates the following problem: CPU1 CPU2...

CVE-2026-43418

CVE-2026-43418 describes a race in the Linux kernel sched/mmcid subsystem: when new tasks are created concurrently, a newly forked task is counted as an MMCID user before it is visible in thread and task lists, which can lead to an incorrect CID allocation and potentially a machine stall. The mit...

CVE-2026-43418 sched/mmcid: Prevent CID stalls due to concurrent forks

In the Linux kernel, the following vulnerability has been resolved: sched/mmcid: Prevent CID stalls due to concurrent forks A newly forked task is accounted as MMCID user before the task is visible in the process' thread list and the global task list. This creates the following problem: CPU1 CPU2...

CVE-2026-43417 sched/mmcid: Handle vfork()/CLONE_VM correctly

In the Linux kernel, the following vulnerability has been resolved: sched/mmcid: Handle vfork/CLONEVM correctly Matthieu and Jiri reported stalls where a task endlessly loops in mmgetcid when scheduling in. It turned out that the logic which handles vfork'ed tasks is broken. It is invoked when th...

CVE-2026-43417

In the Linux kernel, the following vulnerability has been resolved: sched/mmcid: Handle vfork/CLONEVM correctly Matthieu and Jiri reported stalls where a task endlessly loops in mmgetcid when scheduling in. It turned out that the logic which handles vfork'ed tasks is broken. It is invoked when th...

CVE-2026-43417

CVE-2026-43417 affects the Linux kernel, specifically the vfork()/CLONE_VM handling in sched/mmcid. The bug occurs when the number of tasks in a process is smaller than MMCID users, causing the system to loop through the task list and double-count already processed tasks. If this double processin...

CVE-2026-43417 sched/mmcid: Handle vfork()/CLONE_VM correctly

In the Linux kernel, the following vulnerability has been resolved: sched/mmcid: Handle vfork/CLONEVM correctly Matthieu and Jiri reported stalls where a task endlessly loops in mmgetcid when scheduling in. It turned out that the logic which handles vfork'ed tasks is broken. It is invoked when th...

CVE-2026-43326

In the Linux kernel, the following vulnerability has been resolved: schedext: Fix SCXKICKWAIT deadlock by deferring wait to balance callback SCXKICKWAIT busy-waits in kickcpusirqworkfn using smpcondloadacquire until the target CPU's kicksync advances. Because the irqwork runs in hardirq context,...

CVE-2026-43326

In the Linux kernel, the following vulnerability has been resolved: schedext: Fix SCXKICKWAIT deadlock by deferring wait to balance callback SCXKICKWAIT busy-waits in kickcpusirqworkfn using smpcondloadacquire until the target CPU's kicksync advances. Because the irqwork runs in hardirq context,...