page_table_walk

Capture the Flag im physischen Arbeitsspeicher Du hast über Paging gelesen. Die Diagramme ergeben Sinn. Vier Ebenen, je 9 Bits, Seitenrahmen, Offset. Klar. Aber dann stößt du auf eine Herausforderung, die verlangt, dass du tatsächlich Seitentabellen durchläufst, und du merkst, dass du es nicht...

KVM-Januscape

KVM-XJ Hotpatch dumptool.py sucht automatisch Offsets. Wie man es verwendet, steht im Code. Schwachstellenübersicht CVE-2026-53359 Januscape ist eine Use-After-Free UAF Schwachstelle im KVM Shadow MMU des Linux-Kernels. Latenzzeit: 16 Jahre August 2010 bis Juli 2026 Betroffene Systeme: Alle...

page-table-exploitation

page-table-exploitation Eine Demonstration, wie Seitentabellen verwendet werden können, um beliebigen Code in Ring-0 auszuführen und zu einer Privilegienerweiterung zu führen. Verwendet CVE-2016-7255 als Beispiel...

SUSE CVE-2026-74672

In the Linux kernel, the following vulnerability has been resolved: mm/vmalloc: acquire initmm lock on huge vmap to avoid ptdump UAF Patch series "mm: fix UAF caused by race between ptdump and vmap pgtable freeing", v6. Kernel page table walkers fall into two broad categories - those ranges where...

CVE-2026-74672

In the Linux kernel, the following vulnerability has been resolved: mm/vmalloc: acquire initmm lock on huge vmap to avoid ptdump UAF Patch series "mm: fix UAF caused by race between ptdump and vmap pgtable freeing", v6. Kernel page table walkers fall into two broad categories - those ranges where...

CVE-2026-74674

In the Linux kernel, the following vulnerability has been resolved: mm: fix incorrect flush address in direct page table reclaim When zappterange reclaims a page table, it does: ptefreetlbtlb, pmdpgtablepmdval, addr; and this is unconditionally wrong: if this code executes, addr always points one...

CVE-2026-74599

In the Linux kernel, the following vulnerability has been resolved: mm/ptdump: always stabilise against page table freeing using initmm Previous commits have established the invariant that kernel page table freeing is performed while an mmap read lock on initmm is held, which fixes races between...

CVE-2026-74674 mm: fix incorrect flush address in direct page table reclaim

In the Linux kernel, the following vulnerability has been resolved: mm: fix incorrect flush address in direct page table reclaim When zappterange reclaims a page table, it does: ptefreetlbtlb, pmdpgtablepmdval, addr; and this is unconditionally wrong: if this code executes, addr always points one...

CVE-2026-74674 mm: fix incorrect flush address in direct page table reclaim

In the Linux kernel, the following vulnerability has been resolved: mm: fix incorrect flush address in direct page table reclaim When zappterange reclaims a page table, it does: ptefreetlbtlb, pmdpgtablepmdval, addr; and this is unconditionally wrong: if this code executes, addr always points one...

EUVD-2026-64361

In the Linux kernel, the following vulnerability has been resolved: mm: fix incorrect flush address in direct page table reclaim When zappterange reclaims a page table, it does: ptefreetlbtlb, pmdpgtablepmdval, addr; and this is unconditionally wrong: if this code executes, addr always points one...

CVE-2026-74674

This vulnerability affects the Linux kernel 's memory management (mm) subsystem, specifically the zap_pte_range function. When reclaiming a page table, the function calls pte_free_tlb with an addr parameter that always points one past the end of the table's range, causing the TLB flush to target ...

EUVD-2026-64359

In the Linux kernel, the following vulnerability has been resolved: mm/vmalloc: acquire initmm lock on huge vmap to avoid ptdump UAF Patch series "mm: fix UAF caused by race between ptdump and vmap pgtable freeing", v6. Kernel page table walkers fall into two broad categories - those ranges where...

CVE-2026-74672 mm/vmalloc: acquire init_mm lock on huge vmap to avoid ptdump UAF

In the Linux kernel, the following vulnerability has been resolved: mm/vmalloc: acquire initmm lock on huge vmap to avoid ptdump UAF Patch series "mm: fix UAF caused by race between ptdump and vmap pgtable freeing", v6. Kernel page table walkers fall into two broad categories - those ranges where...

CVE-2026-74672

CVE-2026-74672 is a use-after-free vulnerability in the Linux kernel affecting both x86 and arm64 architectures. The root cause is a race condition between the ptdump page table walker and the vmap huge page table promotion logic: vmap frees lower page tables when promoting to huge leaf entries w...

CVE-2026-74672 mm/vmalloc: acquire init_mm lock on huge vmap to avoid ptdump UAF

In the Linux kernel, the following vulnerability has been resolved: mm/vmalloc: acquire initmm lock on huge vmap to avoid ptdump UAF Patch series "mm: fix UAF caused by race between ptdump and vmap pgtable freeing", v6. Kernel page table walkers fall into two broad categories - those ranges where...

EUVD-2026-64536

In the Linux kernel, the following vulnerability has been resolved: mm/ptdump: always stabilise against page table freeing using initmm Previous commits have established the invariant that kernel page table freeing is performed while an mmap read lock on initmm is held, which fixes races between...

CVE-2026-74599

CVE-2026-74599 is a race condition in the Linux kernel 's mm/ptdump subsystem. Previous fixes established that kernel page table freeing occurs while holding an mmap read lock on init_mm , but x86 and arm64 architectures can perform a ptdump over a non-init_mm via ptdump_walk_pgd(). Since kernel ...

CVE-2026-74599 mm/ptdump: always stabilise against page table freeing using init_mm

In the Linux kernel, the following vulnerability has been resolved: mm/ptdump: always stabilise against page table freeing using initmm Previous commits have established the invariant that kernel page table freeing is performed while an mmap read lock on initmm is held, which fixes races between...

CVE-2026-74599 mm/ptdump: always stabilise against page table freeing using init_mm

In the Linux kernel, the following vulnerability has been resolved: mm/ptdump: always stabilise against page table freeing using initmm Previous commits have established the invariant that kernel page table freeing is performed while an mmap read lock on initmm is held, which fixes races between...

PT-2026-79604

In the Linux kernel, the following vulnerability has been resolved: mm/ptdump: always stabilise against page table freeing using init mm Previous commits have established the invariant that kernel page table freeing is performed while an mmap read lock on init mm is held, which fixes races betwee...