CVE-2026-80626: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: powerpc/perf: fix preempt count underflow in fslembpmudel fslembpmudel unconditionally calls putcpuvarcpuhwevents at the 'out:' label, but only calls the matching getcpuvar after the 'i hw.idx is negative the function jumps to...

CVE-2026-23134: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: slab: fix kmallocnolock context check for PREEMPTRT On PREEMPTRT kernels, locallock becomes a sleeping lock. The current check in kmallocnolock only verifies we're not in NMI or hard IRQ context, but misses the case where...

CVE-2025-39745: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: rcutorture: Fix rcutortureoneextendcheck splat in RT kernels For built with CONFIGPREEMPTRT=y kernels, running rcutorture tests resulted in the following splat: 68.797425 rcutortureoneextendcheck during change: Current 0x1 To add...

CVE-2024-40980 drop_monitor: replace spin_lock by raw_spin_lock

In the Linux kernel, the following vulnerability has been resolved: dropmonitor: replace spinlock by rawspinlock tracedropcommon is called with preemption disabled, and it acquires a spinlock. This is problematic for RT kernels because spinlocks are sleeping locks in this configuration, which...

CVE-2021-47454: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: powerpc/smp: do not decrement idle task preempt count in CPU offline With PREEMPTCOUNT=y, when a CPU is offlined and then onlined again, we get: BUG: scheduling while atomic: swapper/1/0/0x00000000 no locks held by swapper/1/0...