CVE-2026-68421

The CVE-2026-68421 entry concerns the Linux kernel sched_ext path. The issue arises when put_prev_task_scx() warns about a runnable task dropping to a lower sched_class without ENQ_LAST, due to core scheduling forcing idle via an SMT sibling’s core_pick path which bypasses balance_one(). The miti...

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...

DEBIAN-CVE-2023-53859

In the Linux kernel, the following vulnerability has been resolved: s390/idle: mark archcpuidle noinstr linux-next commit "cpuidle: tracing: Warn about !rcuiswatching" adds a new warning which hits on s390's archcpuidle function: RCU not on for: archcpuidle+0x0/0x28 WARNING: CPU: 2 PID: 0 at...