virt: sev-guest: Explicitly leak pages in unknown state

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Summary

CVECVE-2026-64104
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-19 16:17:51 UTC
Updated2026-07-19 16:17:51 UTC
DescriptionIn 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().

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 3e385c0d6ce88ac9916dcf84267bd5855d830748 bee400ad4f4259c9c0758e4f1960a1eed6f6f9f0 git Not specified
CNA Linux Linux affected 3e385c0d6ce88ac9916dcf84267bd5855d830748 3d0cd0065deeb054b4b29236432e851806b7cc81 git Not specified
CNA Linux Linux affected 3e385c0d6ce88ac9916dcf84267bd5855d830748 fd948c3f96b18ff9ba7d3e8eae13d196593e1aaf git Not specified
CNA Linux Linux affected 0b16521f95c875e79d657cb8d6911c15080dbb80 git Not specified
CNA Linux Linux affected 6.13.8 6.14 semver Not specified
CNA Linux Linux affected 6.14 Not specified
CNA Linux Linux unaffected 6.14 semver Not specified
CNA Linux Linux unaffected 6.18.34 6.18.* semver Not specified
CNA Linux Linux unaffected 7.0.11 7.0.* semver Not specified
CNA Linux Linux unaffected 7.1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/3d0cd0065deeb054b4b29236432e851806b7cc81 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/bee400ad4f4259c9c0758e4f1960a1eed6f6f9f0 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/fd948c3f96b18ff9ba7d3e8eae13d196593e1aaf 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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