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NVD Vulnerability Details :
CVE-2026-43096
Received
More InfoOfficial Page
Source-416baaa9-dc9f-4396-8d5f-8c081fb06d67
View Known Exploited Vulnerability (KEV) details
Published At-06 May, 2026 | 10:16
Updated At-06 May, 2026 | 10:16

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.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
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References
HyperlinkSourceResource
https://git.kernel.org/stable/c/02226839079ccc558820a3b25c4c46812927b4ba416baaa9-dc9f-4396-8d5f-8c081fb06d67
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https://git.kernel.org/stable/c/16cbec24897624051b324aa3a85859c38ca65fde416baaa9-dc9f-4396-8d5f-8c081fb06d67
N/A
Hyperlink: https://git.kernel.org/stable/c/02226839079ccc558820a3b25c4c46812927b4ba
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/16cbec24897624051b324aa3a85859c38ca65fde
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Resource: N/A
Change History
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