The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - KVM: x86: Fix shadow paging use-after-free due to unexpected role Commit 0cb2af2ea66ad (KVM: x86: Fix     shadow paging use-after-free due to unexpected GFN) fixed a shadow paging mismatch between stored and     computed GFNs; the bug could be triggered by changing a PDE mapping from outside the guest, and then     deleting a memslot. The rmap_remove() call would miss entries created after the PDE change because the GFN     of the leaf SPTE does not match the GFN of the struct kvm_mmu_page. A similar hole however remains if the     modified PDE points to a non-leaf page. In this case the gfn can be made to match, but the role does not     match: the original large 2MB page creates a kvm_mmu_page with direct=1, while the new 4KB needs a     kvm_mmu_page with direct=0. However, kvm_mmu_get_child_sp() does not compare the role, and therefore     reuses the page. The next step is installing a leaf (4KB) SPTE on the new path which records an rmap entry     under the gfn resolved by the walk. But when that child is zapped its parent kvm_mmu_page has direct=1 and     kvm_mmu_page_get_gfn() computes the gfn for the 4KB page as sp->gfn + index instead of using     sp->shadowed_translation[] (or sp->gfns[] in older kernels). It therefore fails to remove the recorded     entry. When the memslot is dropped the shadow page is freed but the rmap entry survives, as in the     scenario that was already fixed. Code that later walks that gfn (dirty logging, MMU notifier invalidation,     and so on) dereferences an sptep that lies in the freed page, causing the use-after-free. (CVE-2026-53359)

Note that Nessus relies on the presence of the package as reported by the vendor.

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Linux Distros Unpatched Vulnerability : CVE-2026-53359

high Nessus Plugin ID 325339

Version 1.6

Version 1.5

Version 1.3

Version 1.1

Version 1.6 Jul 25, 2026, 1:06 PM Detection (updated detection logic) Plugin metadata Plugin Feed: 202607251306
Version 1.5 Jul 21, 2026, 8:31 PM Detection (updated detection logic) Plugin metadata Plugin Feed: 202607212031
Version 1.3 Jul 8, 2026, 11:53 AM CVSS temporal metrics ("CVSSv3 temporal vector" set to "CVSS:3.0/E:P/RL:U/RC:C") Detection (updated detection logic) Exploit attributes ("Exploit available" set to "True". "Exploitability ease" changed from "No known exploits are available" to "Exploits are available") Plugin metadata Plugin Feed: 202607081153
Version 1.1 Jul 7, 2026, 5:47 AM New Plugin Feed: 202607070547