CVE-2026-89928 KVM: x86/mmu: Consume the locked rmap value in the lockless rmap walk

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: Consume the locked rmap value in the lockless rmap walk kvmrmaplock deliberately elides the rmap lock when it observes an empty rmap. In that case kvmrmaplockreadonly also re-enables preemption and returns zero, so...

CVE-2026-89928 KVM: x86/mmu: Consume the locked rmap value in the lockless rmap walk

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: Consume the locked rmap value in the lockless rmap walk kvmrmaplock deliberately elides the rmap lock when it observes an empty rmap. In that case kvmrmaplockreadonly also re-enables preemption and returns zero, so...

CVE-2026-89928

CVE-2026-89928 is a slab use-after-free in the Linux kernel's KVM x86/mmu subsystem. The root cause is a race condition in the lockless reverse-mapping (rmap) walk: kvm_rmap_age_gfn_range() ignores the value returned by kvm_rmap_lock_readonly() and instead re-reads the rmap head via rmap_get_firs...

CVE-2026-80726

A flaw was found in KVM Kernel-based Virtual Machine. This vulnerability occurs in the x86 Memory Management Unit MMU when creating a child shadow page. An attacker, potentially a malicious guest operating system, could exploit this by triggering a use-after-free condition due to incorrect handli...

Oracle Linux 8 / 9 : Unbreakable Enterprise kernel (ELSA-2026-500249)

The remote Oracle Linux 8 / 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-500249 advisory. - inet: frags: strip GSO state from fragments before reassembly Xinyang Ge Orabug: 39974835 CVE-2026-80590 - KVM: x86/mmu: Stop needlessly making...

Linux Distros Unpatched Vulnerability : CVE-2026-80726

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - KVM: x86/mmu: WARN and clear role.invalid when creating a child shadow page Explicitly clear role.invalid when deriving a child shadow page's role from its pare...

AZL-99062 CVE-2026-80726 affecting package kernel 6.6.150.1-1

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: WARN and clear role.invalid when creating a child shadow page Explicitly clear role.invalid when deriving a child shadow page's role from its parent to harden against bugs elsewhere in KVM, as violating KVM's...

CVE-2026-80726

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: WARN and clear role.invalid when creating a child shadow page Explicitly clear role.invalid when deriving a child shadow page's role from its parent to harden against bugs elsewhere in KVM, as violating KVM's...

UBUNTU-CVE-2026-80726

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: WARN and clear role.invalid when creating a child shadow page Explicitly clear role.invalid when deriving a child shadow page's role from its parent to harden against bugs elsewhere in KVM, as violating KVM's...

CVE-2026-80726

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: WARN and clear role.invalid when creating a child shadow page Explicitly clear role.invalid when deriving a child shadow page's role from its parent to harden against bugs elsewhere in KVM, as violating KVM's...

EUVD-2026-70330

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: WARN and clear role.invalid when creating a child shadow page Explicitly clear role.invalid when deriving a child shadow page's role from its parent to harden against bugs elsewhere in KVM, as violating KVM's...

CVE-2026-80726

CVE-2026-80726 affects the Linux kernel's KVM x86 MMU subsystem . The root cause is that role.invalid is not explicitly cleared when deriving a child shadow page's role from its parent. This violates KVM's invariant that invalid pages are not on the active MMU page list, leading to a use-after-fr...

CVE-2026-80726 KVM: x86/mmu: WARN and clear role.invalid when creating a child shadow page

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: WARN and clear role.invalid when creating a child shadow page Explicitly clear role.invalid when deriving a child shadow page's role from its parent to harden against bugs elsewhere in KVM, as violating KVM's...

CVE-2026-80726 KVM: x86/mmu: WARN and clear role.invalid when creating a child shadow page

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: WARN and clear role.invalid when creating a child shadow page Explicitly clear role.invalid when deriving a child shadow page's role from its parent to harden against bugs elsewhere in KVM, as violating KVM's...

PT-2026-84924

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: WARN and clear role.invalid when creating a child shadow page Explicitly clear role.invalid when deriving a child shadow page's role from its parent to harden against bugs elsewhere in KVM, as violating KVM's...

KVM: x86/mmu: Fix use-after-free on vendor module reload

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CVE-2026-68428 KVM: x86/mmu: Fix use-after-free on vendor module reload

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: Fix use-after-free on vendor module reload mmudestroycaches destroys ptelistdesccache and mmupageheadercache, but leaves both pointers unchanged. The pointers live in kvm.ko, and therefore survive when a vendor modu...

PT-2026-69828

Name of the Vulnerable Software and Affected Versions Linux kernel version 7.1.3 Description A slab use-after-free issue exists in the KVM x86 MMU. The mmu destroy caches function destroys pte list desc cache and mmu page header cache but fails to clear the associated pointers. Because these...

AZL-94368 CVE-2026-64561 affecting package kernel for versions less than 6.6.150.1-1

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Check for invalid/obsolete root after making MMU pages available Check for a "stale" page fault, i.e. for an invalid and/or obsolete root, after making MMU pages available for the shadow MMU. If reclaiming shadow pages...

Unbreakable Enterprise kernel security update

5.15.0-322.203.3.2 - KVM: x86/mmu: Ensure hugepage is in by slot before checking max mapping level Sean Christopherson Orabug: 39673886 - KVM: x86: Fix shadow paging use-after-free due to unexpected role Paolo Bonzini Orabug: 39673886 - KVM: x86: Fix shadow paging use-after-free due to unexpected...