{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2023-52659","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-03-07T14:49:46.884Z","datePublished":"2024-05-17T12:08:36.098Z","dateUpdated":"2025-05-04T07:41:02.699Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2025-05-04T07:41:02.699Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nx86/mm: Ensure input to pfn_to_kaddr() is treated as a 64-bit type\n\nOn 64-bit platforms, the pfn_to_kaddr() macro requires that the input\nvalue is 64 bits in order to ensure that valid address bits don't get\nlost when shifting that input by PAGE_SHIFT to calculate the physical\naddress to provide a virtual address for.\n\nOne such example is in pvalidate_pages() (used by SEV-SNP guests), where\nthe GFN in the struct used for page-state change requests is a 40-bit\nbit-field, so attempts to pass this GFN field directly into\npfn_to_kaddr() ends up causing guest crashes when dealing with addresses\nabove the 1TB range due to the above.\n\nFix this issue with SEV-SNP guests, as well as any similar cases that\nmight cause issues in current/future code, by using an inline function,\ninstead of a macro, so that the input is implicitly cast to the\nexpected 64-bit input type prior to performing the shift operation.\n\nWhile it might be argued that the issue is on the caller side, other\narchs/macros have taken similar approaches to deal with instances like\nthis, such as ARM explicitly casting the input to phys_addr_t:\n\n  e48866647b48 (\"ARM: 8396/1: use phys_addr_t in pfn_to_kaddr()\")\n\nA C inline function is even better though.\n\n[ mingo: Refined the changelog some more & added __always_inline. ]"}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/x86/include/asm/page.h"],"versions":[{"version":"6c3211796326a9d35618b866826ca556c8f008a8","lessThan":"325956b0173f11e98f90462be4829a8b8b0682ce","status":"affected","versionType":"git"},{"version":"6c3211796326a9d35618b866826ca556c8f008a8","lessThan":"7e1471888a5e6e846e9b4d306e5327db2b58e64e","status":"affected","versionType":"git"},{"version":"6c3211796326a9d35618b866826ca556c8f008a8","lessThan":"814305b5c23cb815ada68d43019f39050472b25f","status":"affected","versionType":"git"},{"version":"6c3211796326a9d35618b866826ca556c8f008a8","lessThan":"8e5647a723c49d73b9f108a8bb38e8c29d3948ea","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/x86/include/asm/page.h"],"versions":[{"version":"6.5","status":"affected"},{"version":"0","lessThan":"6.5","status":"unaffected","versionType":"semver"},{"version":"6.6.23","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.7.11","lessThanOrEqual":"6.7.*","status":"unaffected","versionType":"semver"},{"version":"6.8.2","lessThanOrEqual":"6.8.*","status":"unaffected","versionType":"semver"},{"version":"6.9","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":"6.5","versionEndExcluding":"6.6.23"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.5","versionEndExcluding":"6.7.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.5","versionEndExcluding":"6.8.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.5","versionEndExcluding":"6.9"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/325956b0173f11e98f90462be4829a8b8b0682ce"},{"url":"https://git.kernel.org/stable/c/7e1471888a5e6e846e9b4d306e5327db2b58e64e"},{"url":"https://git.kernel.org/stable/c/814305b5c23cb815ada68d43019f39050472b25f"},{"url":"https://git.kernel.org/stable/c/8e5647a723c49d73b9f108a8bb38e8c29d3948ea"}],"title":"x86/mm: Ensure input to pfn_to_kaddr() is treated as a 64-bit type","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2023-52659","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2024-05-21T15:56:17.694229Z"}}}],"providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2024-06-04T17:23:47.671Z"}},{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-02T23:03:21.334Z"},"title":"CVE Program Container","references":[{"url":"https://git.kernel.org/stable/c/325956b0173f11e98f90462be4829a8b8b0682ce","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/7e1471888a5e6e846e9b4d306e5327db2b58e64e","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/814305b5c23cb815ada68d43019f39050472b25f","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/8e5647a723c49d73b9f108a8bb38e8c29d3948ea","tags":["x_transferred"]}]}]}}