CVE-2026-64104

High

Description

In the Linux kernel, the following vulnerability has been resolved: virt: sev-guest: Explicitly leak pages in unknown state When set_memory_{encrypted,decrypted}() fail, the user cannot know at which point the function failed, meaning that the pages are left in an unknown state from the point of view of the caller. Since the pages may be left in an unencrypted state, they are not suitable for general use, and cannot be returned safely to the buddy allocator. Avoid the issue by never freeing the pages, and then do the proper accounting by calling snp_leak_pages().

SeverityHigh
CVSS8.7
Exploit probability—
ProductLinux Kernel
PublishedJul 19, 2026
First seenJul 19, 2026

How to fix

Update
  • linux linux_kernel6.14, 6.18.34, 7.0.11 or later

Affected products

ProductAffected versionsFixed in
linux linux_kernel6.13.8 ≤ v < 6.14, 6.14.1 ≤ v < 6.18.34, 6.19 ≤ v < 7.0.11, 6.14, 7.16.14, 6.18.34, 7.0.11

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CVE-2026-64104 · Linux Kernel · Dark Radar