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CVE-2026-98471: Linux

7.1

CVSS 3.1

Няма данни

Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

Няма потвърждение

Атакува се

Няма данни

Време до експлоатация

Атакува се локално, без особени условия, с обикновен потребителски вход и без действие от потребителя.

    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Do cache maintenance on the source VM during intra-host migration Manually perform cache maintenance on the source VM during intra-host migration to ensure no stale data is left in CPU caches after the VM is destroyed. Because the source VM is "converted" to a non-SEV VM, KVM's memory reclaim flows won't trigger cache maintenance, e.g. when all guest memory is reclaimed in response to detaching from the mmu_notifier. Note, relying on the destination VM to do cache maintenance isn't an option as KVM doesn't require identical guest memory configurations, i.e. the source VM may have access to memory that the destination VM does not. Enforcing equivalent memory configurations is infeasible, as it would require a *deep* comparison of memslots, e.g. to verify that not only are the memslot identical, but what the memslots point at is also identical.

    Засегнати продукти

    • Linux Linux: b56639318bb2be66aceba92836279714488709b4 преди 37dfb676fafd1eef36fe0bb649607afbb0d5521b; b56639318bb2be66aceba92836279714488709b4 преди d4cc2dff12116a700add601c0262132cc26e1b2c; b56639318bb2be66aceba92836279714488709b4 преди 93de2a6a4b91b72607136dd656edf03fb399d27f
    • Linux Linux: 5.16; преди 5.16; 6.18.55 до 6.18.*; 7.2.9 до 7.2.*; от 7.3 нататък

    История

    • 18 октомври 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-98471: Linux | freedomonline.bg