CVE-2026-89759

A flaw was found in the Linux kernel's memory leak detector kmemleak. When kmemleakscan attempts to scan task stacks on systems with a large number of threads, it can hold a CPU for an extended period without allowing other processes to run. This can lead to a 'soft lockup,' where the system...

CVE-2026-89759 mm/kmemleak: avoid soft lockup when scanning task stacks

In the Linux kernel, the following vulnerability has been resolved: mm/kmemleak: avoid soft lockup when scanning task stacks Patch series "mm/kmemleak: avoid soft lockup when scanning task", v3. kmemleakscan scans every task stack under one rcureadlock with no reschedule point, which can trip the...

CVE-2026-89759

CVE-2026-89759 affects the Linux kernel's mm/kmemleak subsystem. The root cause is that kmemleak_scan() walks every task stack under a single rcu_read_lock() with no reschedule point; on hosts with a very large number of threads (amplified by KASAN/lockdep in debug builds), the loop can hog a CPU...

EUVD-2026-76671

In the Linux kernel, the following vulnerability has been resolved: mm/kmemleak: avoid soft lockup when scanning task stacks Patch series "mm/kmemleak: avoid soft lockup when scanning task", v3. kmemleakscan scans every task stack under one rcureadlock with no reschedule point, which can trip the...