{"api_version":"1","generated_at":"2026-07-20T14:43:05+00:00","cve":"CVE-2026-64104","urls":{"html":"https://cve.report/CVE-2026-64104","api":"https://cve.report/api/cve/CVE-2026-64104.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-64104","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-64104"},"summary":{"title":"virt: sev-guest: Explicitly leak pages in unknown state","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nvirt: sev-guest: Explicitly leak pages in unknown state\n\nWhen set_memory_{encrypted,decrypted}() fail, the user cannot know at which\npoint the function failed, meaning that the pages are left in an unknown state\nfrom the point of view of the caller.\n\nSince the pages may be left in an unencrypted state, they are not suitable for\ngeneral use, and cannot be returned safely to the buddy allocator. Avoid the\nissue by never freeing the pages, and then do the proper accounting by calling\nsnp_leak_pages().","state":"PUBLISHED","assigner":"Linux","published_at":"2026-07-19 16:17:51","updated_at":"2026-07-19 16:17:51"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/3d0cd0065deeb054b4b29236432e851806b7cc81","name":"https://git.kernel.org/stable/c/3d0cd0065deeb054b4b29236432e851806b7cc81","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/bee400ad4f4259c9c0758e4f1960a1eed6f6f9f0","name":"https://git.kernel.org/stable/c/bee400ad4f4259c9c0758e4f1960a1eed6f6f9f0","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/fd948c3f96b18ff9ba7d3e8eae13d196593e1aaf","name":"https://git.kernel.org/stable/c/fd948c3f96b18ff9ba7d3e8eae13d196593e1aaf","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-64104","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64104","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3e385c0d6ce88ac9916dcf84267bd5855d830748 bee400ad4f4259c9c0758e4f1960a1eed6f6f9f0 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3e385c0d6ce88ac9916dcf84267bd5855d830748 3d0cd0065deeb054b4b29236432e851806b7cc81 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3e385c0d6ce88ac9916dcf84267bd5855d830748 fd948c3f96b18ff9ba7d3e8eae13d196593e1aaf git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 0b16521f95c875e79d657cb8d6911c15080dbb80 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.13.8 6.14 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.14","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.14 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.34 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0.11 7.0.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/virt/coco/sev-guest/sev-guest.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"bee400ad4f4259c9c0758e4f1960a1eed6f6f9f0","status":"affected","version":"3e385c0d6ce88ac9916dcf84267bd5855d830748","versionType":"git"},{"lessThan":"3d0cd0065deeb054b4b29236432e851806b7cc81","status":"affected","version":"3e385c0d6ce88ac9916dcf84267bd5855d830748","versionType":"git"},{"lessThan":"fd948c3f96b18ff9ba7d3e8eae13d196593e1aaf","status":"affected","version":"3e385c0d6ce88ac9916dcf84267bd5855d830748","versionType":"git"},{"status":"affected","version":"0b16521f95c875e79d657cb8d6911c15080dbb80","versionType":"git"},{"lessThan":"6.14","status":"affected","version":"6.13.8","versionType":"semver"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/virt/coco/sev-guest/sev-guest.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.14"},{"lessThan":"6.14","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.34","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.11","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.34","versionStartIncluding":"6.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.11","versionStartIncluding":"6.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1","versionStartIncluding":"6.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13.8","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nvirt: sev-guest: Explicitly leak pages in unknown state\n\nWhen set_memory_{encrypted,decrypted}() fail, the user cannot know at which\npoint the function failed, meaning that the pages are left in an unknown state\nfrom the point of view of the caller.\n\nSince the pages may be left in an unencrypted state, they are not suitable for\ngeneral use, and cannot be returned safely to the buddy allocator. Avoid the\nissue by never freeing the pages, and then do the proper accounting by calling\nsnp_leak_pages()."}],"providerMetadata":{"dateUpdated":"2026-07-19T15:40:07.994Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/bee400ad4f4259c9c0758e4f1960a1eed6f6f9f0"},{"url":"https://git.kernel.org/stable/c/3d0cd0065deeb054b4b29236432e851806b7cc81"},{"url":"https://git.kernel.org/stable/c/fd948c3f96b18ff9ba7d3e8eae13d196593e1aaf"}],"title":"virt: sev-guest: Explicitly leak pages in unknown state","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-64104","datePublished":"2026-07-19T15:40:07.994Z","dateReserved":"2026-07-19T07:54:57.034Z","dateUpdated":"2026-07-19T15:40:07.994Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-19 16:17:51","lastModifiedDate":"2026-07-19 16:17:51","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"64104","Ordinal":"1","Title":"virt: sev-guest: Explicitly leak pages in unknown state","CVE":"CVE-2026-64104","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"64104","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nvirt: sev-guest: Explicitly leak pages in unknown state\n\nWhen set_memory_{encrypted,decrypted}() fail, the user cannot know at which\npoint the function failed, meaning that the pages are left in an unknown state\nfrom the point of view of the caller.\n\nSince the pages may be left in an unencrypted state, they are not suitable for\ngeneral use, and cannot be returned safely to the buddy allocator. Avoid the\nissue by never freeing the pages, and then do the proper accounting by calling\nsnp_leak_pages().","Type":"Description","Title":"virt: sev-guest: Explicitly leak pages in unknown state"}]}}}