CVE-2026-68094

In the Linux kernel, the following vulnerability has been resolved: schedext: Preserve rq tracking across local DSQ dispatch dispatchtolocaldsq can run from scxbpfdsqmovetolocal while ops.dispatch has recorded the current rq. Moving a task to a local DSQ may switch to the source or destination rq...

CVE-2026-68421 sched_ext: Don't warn on core-sched forced idle in put_prev_task_scx()

In the Linux kernel, the following vulnerability has been resolved: schedext: Don't warn on core-sched forced idle in putprevtaskscx putprevtaskscx warns when a runnable task drops to a lower schedclass without SCXOPSENQLAST, on the assumption that balanceone would have kept it running. Core...

CVE-2026-68421 sched_ext: Don't warn on core-sched forced idle in put_prev_task_scx()

In the Linux kernel, the following vulnerability has been resolved: schedext: Don't warn on core-sched forced idle in putprevtaskscx putprevtaskscx warns when a runnable task drops to a lower schedclass without SCXOPSENQLAST, on the assumption that balanceone would have kept it running. Core...

CVE-2026-68094 sched_ext: Preserve rq tracking across local DSQ dispatch

In the Linux kernel, the following vulnerability has been resolved: schedext: Preserve rq tracking across local DSQ dispatch dispatchtolocaldsq can run from scxbpfdsqmovetolocal while ops.dispatch has recorded the current rq. Moving a task to a local DSQ may switch to the source or destination rq...

CVE-2026-68421: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: schedext: Don't warn on core-sched forced idle in putprevtaskscx putprevtaskscx warns when a runnable task drops to a lower schedclass without SCXOPSENQLAST, on the assumption that balanceone would have kept it running. Core...

Linux Distros Unpatched Vulnerability : CVE-2026-68421

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - schedext: Don't warn on core-sched forced idle in putprevtaskscx putprevtaskscx warns when a runnable task drops to a lower schedclass without SCXOPSENQLAST, on...

CVE-2026-68094: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: schedext: Preserve rq tracking across local DSQ dispatch dispatchtolocaldsq can run from scxbpfdsqmovetolocal while ops.dispatch has recorded the current rq. Moving a task to a local DSQ may switch to the source or destination rq...

UBUNTU-CVE-2026-64226

In the Linux kernel, the following vulnerability has been resolved: schedext: Avoid UAF in scxrootenableworkfn init failure path In scxrootenableworkfn, puttaskstructp is called before scxerror dereferences p-comm and p-pid. If the iterator's reference is the last drop, the task is freed...

CVE-2026-64226

In the Linux kernel, the following vulnerability has been resolved: schedext: Avoid UAF in scxrootenableworkfn init failure path In scxrootenableworkfn, puttaskstructp is called before scxerror dereferences p-comm and p-pid. If the iterator's reference is the last drop, the task is freed...

CVE-2026-64226

In the Linux kernel, CVE-2026-64226 is addressed in sched_ext: Avoid UAF in scx_root_enable_workfn() init failure path. The vulnerable sequence dereferenced p->comm and p->pid after put_task_struct(p) in scx_root_enable_workfn(); when the iterator’s reference was last dropped, the task coul...

CVE-2026-64226: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: schedext: Avoid UAF in scxrootenableworkfn init failure path In scxrootenableworkfn, puttaskstructp is called before scxerror dereferences p-comm and p-pid. If the iterator's reference is the last drop, the task is freed...

CVE-2026-53328

A flaw was found in the Linux kernel's schedext component. When systemd's user manager interacts with subtreecontrol while schedext is loaded, a warning can be triggered. This occurs due to a mismatch in how cgroup and css identities are handled during task migration, potentially leading to syste...

CVE-2026-53328: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: schedext: Don't warn on NULL cgrpmovingfrom in scxcgroupmovetask A WARN fires when systemd's user manager writes "+cpu +memory +pids" to its own subtreecontrol while a schedext scheduler is loaded: WARNING: at...

CVE-2026-46154

CVE-2026-46154 affects the Linux kernel sched_ext functionality. Root cause: in cgroup setters, scx_group_set_{weight,idle,bandwidth}() cache the scx_root before acquiring scx_cgroup_ops_rwsem, enabling a window where the pointer can become stale if a scheduler is disabled and freed (via RCU) and...

Linux kernel 安全漏洞

The Linux kernel is the core of the open-source operating system Linux, developed by the Linux Foundation in the United States. There is a security vulnerability in the Linux kernel, which stems from the cgroup setter in schedext reading scxroot before acquiring a lock. This could lead to reusing...

CVE-2026-46154: Use After Free

In the Linux kernel, the following vulnerability has been resolved: schedext: Read scxroot under scxcgroupopsrwsem in cgroup setters scxgroupsetweight,idle,bandwidth cache scxroot before acquiring scxcgroupopsrwsem, so the pointer can be stale by the time the op runs. If the loaded scheduler is...

Linux Distros Unpatched Vulnerability : CVE-2026-43482

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - schedext: Disable preemption between scxclaimexit and kicking helper work scxclaimexit atomically sets exitkind, which prevents scxerror from triggering further...

CVE-2026-43482: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: schedext: Disable preemption between scxclaimexit and kicking helper work scxclaimexit atomically sets exitkind, which prevents scxerror from triggering further error handling. After claiming exit, the caller must kick the helper...

CVE-2026-43392

Summary (CVE-2026-43392) : In the Linux kernel, the sched_ext vulnerability causes a potential DoS by starving the enable path in scx_enable() when fair-class workloads saturate the system. The root cause is a switch of the calling thread’s sched_class from fair to ext during the READY→ENABLED lo...

CVE-2026-43392

In the Linux kernel, the following vulnerability has been resolved: schedext: Fix starvation of scxenable under fair-class saturation During scxenable, the READY - ENABLED task switching loop changes the calling thread's schedclass from fair to ext. Since fair has higher priority than ext,...