CVE-2026-98396

The Linux kernel on PowerPC architecture contains a vulnerability where KUAP (Kernel User Access Prevention) is restored too early during the transition from kernel to user mode. Specifically, the GENERIC_ENTRY feature incorrectly triggered kuap_user_restore() within arch_exit_to_user_mode_prepar...

EUVD-2026-101045

In the Linux kernel, the following vulnerability has been resolved: powerpc: Do not restore KUAP in archexittousermodeprepare KUAP means kernel cannot touch user memory unless it explicitly is enabled. In the kernel it should stay AMRKUAPBLOCKED. While returning to userspace just before RFI, kern...

CVE-2021-47350 powerpc/mm: Fix lockup on kernel exec fault

In the Linux kernel, the following vulnerability has been resolved: powerpc/mm: Fix lockup on kernel exec fault The powerpc kernel is not prepared to handle exec faults from kernel. Especially, the function isexecfault will return 'false' when an exec fault is taken by kernel, because the check i...

GSD-2022-1005347 powerpc/64e: Fix early TLB miss with KUAP

powerpc/64e: Fix early TLB miss with KUAP This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.19.2 by commit...

PT-2022-33605 · Linux · Linux Kernel

Name of the Vulnerable Software and Affected Versions: Linux Kernel versions prior to v5.19.2 Description: The issue is related to a potential security vulnerability in the powerpc/64e architecture, specifically concerning early TLB miss with KUAP. The actual impact and attack plausibility have n...

CVE-2020-11669

A flaw was found in the way Linux kernel running on the Power9 processor saves and restores its registers while going in and coming out of an idle state. The issue occurs when a guest kernel has Kernel Userspace Address Protection KUAP feature enabled. The idlebook3s function does not save and...