CVSS
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Описание
Оригинално описание
In the Linux kernel, the following vulnerability has been resolved: mshv: Fix infinite fault loop on permission-denied GPA intercepts Prevent infinite fault loops when guests access memory regions without proper permissions. Currently, mshv_handle_gpa_intercept() attempts to remap pages for all faults on movable memory regions, regardless of whether the access type is permitted. When a guest writes to a read-only region, the remap succeeds but the region remains read-only, causing immediate re-fault and spinning the vCPU indefinitely. Validate intercept access type against region permissions before attempting remaps. Reject writes to non-writable regions and executes to non-executable regions early, returning false to let the VMM handle the intercept appropriately. This also closes a potential DoS vector where malicious guests could intentionally trigger these fault loops to consume host resources.
Засегнати продукти
- Linux Linux: b9a66cd5ccbb9fade15d0e427e19470d8ad35b75 преди 02226839079ccc558820a3b25c4c46812927b4ba; b9a66cd5ccbb9fade15d0e427e19470d8ad35b75 преди 16cbec24897624051b324aa3a85859c38ca65fde
- Linux Linux: 6.19; преди 6.19; 6.19.14 до 6.19.*; от 7.0 нататък
История
- 6 май 2026 Публикувано