kernel: mm/memory-failure: fix VM_BUG_ON_PAGE(PagePoisoned(page)) when unpoison memory

A use-after-free memory bug exists in the linux kernel, such that unpoisonmemory tries to check the PGHWPoison flags of an uninitialized page. So VMBUGONPAGEPagePoisonedpage is triggered, leading to damage to the system availability and integrity...

CVE-2025-39883: Out-of-bounds Read

In the Linux kernel, the following vulnerability has been resolved: mm/memory-failure: fix VMBUGONPAGEPagePoisonedpage when unpoison memory When I did memory failure tests, below panic occurs: page dumped because: VMBUGONPAGEPagePoisonedpage kernel BUG at include/linux/page-flags.h:616! Oops:...

CVE-2024-46790: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: codetag: debug: mark codetags for poisoned page as empty When PGhwpoison pages are freed they are treated differently in freepagesprepare and instead of being released they are isolated. Page allocation tag counters are decrement...

kernel: mm/huge_memory: don't unpoison huge_zero_folio

A vulnerability was found in the Linux kernel's memory management component in the unpoisonmemory function, where it involves improper handling of hugezerofolio when memory failures occur, which can lead to a kernel panic due to an erroneous reference count...

CVE-2024-40914

In the Linux kernel, the following vulnerability has been resolved: mm/hugememory: don't unpoison hugezerofolio When I did memory failure tests recently, below panic occurs: kernel BUG at include/linux/mm.h:1135! invalid opcode: 0000 1 PREEMPT SMP NOPTI CPU: 9 PID: 137 Comm: kswapd1 Not tainted...

CVE-2024-40914 mm/huge_memory: don't unpoison huge_zero_folio

In the Linux kernel, the following vulnerability has been resolved: mm/hugememory: don't unpoison hugezerofolio When I did memory failure tests recently, below panic occurs: kernel BUG at include/linux/mm.h:1135! invalid opcode: 0000 1 PREEMPT SMP NOPTI CPU: 9 PID: 137 Comm: kswapd1 Not tainted...

CVE-2024-40914 mm/huge_memory: don't unpoison huge_zero_folio

In the Linux kernel, the following vulnerability has been resolved: mm/hugememory: don't unpoison hugezerofolio When I did memory failure tests recently, below panic occurs: kernel BUG at include/linux/mm.h:1135! invalid opcode: 0000 1 PREEMPT SMP NOPTI CPU: 9 PID: 137 Comm: kswapd1 Not tainted...