{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-53769","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-12-08T01:18:04.281Z","datePublished":"2025-12-08T01:19:32.417Z","dateUpdated":"2026-05-11T19:51:19.622Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T19:51:19.622Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nvirt/coco/sev-guest: Double-buffer messages\n\nThe encryption algorithms read and write directly to shared unencrypted\nmemory, which may leak information as well as permit the host to tamper\nwith the message integrity. Instead, copy whole messages in or out as\nneeded before doing any computation on them."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/virt/coco/sev-guest/sev-guest.c"],"versions":[{"version":"d5af44dde5461d125d1602ac913ab5c6bdf09b8b","lessThan":"577a64725bfd77645986168e953d405067ee565b","status":"affected","versionType":"git"},{"version":"d5af44dde5461d125d1602ac913ab5c6bdf09b8b","lessThan":"c27dafc4aa50a29ec927b3aa84ac7b430071f682","status":"affected","versionType":"git"},{"version":"d5af44dde5461d125d1602ac913ab5c6bdf09b8b","lessThan":"4b69c63f716cfda38e1210e65b68f67f6cee2ddf","status":"affected","versionType":"git"},{"version":"d5af44dde5461d125d1602ac913ab5c6bdf09b8b","lessThan":"965006103a14703cc42043bbf9b5e0cdf7a468ad","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/virt/coco/sev-guest/sev-guest.c"],"versions":[{"version":"5.19","status":"affected"},{"version":"0","lessThan":"5.19","status":"unaffected","versionType":"semver"},{"version":"6.1.28","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.2.15","lessThanOrEqual":"6.2.*","status":"unaffected","versionType":"semver"},{"version":"6.3.2","lessThanOrEqual":"6.3.*","status":"unaffected","versionType":"semver"},{"version":"6.4","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19","versionEndExcluding":"6.1.28"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19","versionEndExcluding":"6.2.15"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19","versionEndExcluding":"6.3.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19","versionEndExcluding":"6.4"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/577a64725bfd77645986168e953d405067ee565b"},{"url":"https://git.kernel.org/stable/c/c27dafc4aa50a29ec927b3aa84ac7b430071f682"},{"url":"https://git.kernel.org/stable/c/4b69c63f716cfda38e1210e65b68f67f6cee2ddf"},{"url":"https://git.kernel.org/stable/c/965006103a14703cc42043bbf9b5e0cdf7a468ad"}],"title":"virt/coco/sev-guest: Double-buffer messages","x_generator":{"engine":"bippy-1.2.0"}}}}