{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2023-52659 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2023-52659 is a medium-severity vulnerability in Linux kernel, published on 17 May 2024. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2023-52659 and fix it if it is affected.\n\nWhat it is: CVE-2023-52659 is a medium-severity vulnerability in Linux kernel, published on 17 May 2024. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2023-52659 in the wild and no public exploit code.\n\nAffected product: Linux kernel. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2023-52659/ (Markdown: https://insights.sbomify.com/CVE-2023-52659/index.md)","id":"CVE-2023-52659","markdown":"https://insights.sbomify.com/CVE-2023-52659/index.md","name":"CVE-2023-52659","record":{"aliases":["BELL-CVE-2023-52659","DEBIAN-CVE-2023-52659","GHSA-jpp4-rwwf-g5qm","UBUNTU-CVE-2023-52659"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":true,"product_category":"Linux kernel","requires_auth":"low_privilege","summary":"A type casting error in the Linux kernel's pfn_to_kaddr macro causes guest crashes in SEV-SNP environments when handling high memory addresses.","user_interaction":"not_required","vuln_class":"integer_overflow"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[{"product":"linux_kernel","vendor":"linux"}],"cvss":{"score":5.5,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[],"description":"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 \u0026 added __always_inline. ]","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"x86/mm: Ensure input to pfn_to_kaddr() is treated as a 64-bit type","id":"CVE-2023-52659","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"integer_overflow","year":"2023"},"n_packages":0,"n_references":4,"next":{"headline":"media: rkisp1: Fix IRQ handling due to shared interrupts","id":"CVE-2023-52660"},"packages":[],"prev":{"headline":"Revert \"net/mlx5: Block entering switchdev mode with ns inconsistency\"","id":"CVE-2023-52658"},"products":["Linux"],"published":"2024-05-17","related":[{"cvss_score":8.8,"headline":"Linux Kernel Out-of-Bounds Write","id":"CVE-2026-53266","kev_date_added":"2026-09-18","published":"2026-06-25"},{"cvss_score":8.8,"headline":"Linux Kernel Improper Input Validation","id":"CVE-2013-6282","kev_date_added":"2022-09-15","published":"2013-11-19"},{"cvss_score":8.4,"headline":"Linux Kernel Heap-Based Buffer Overflow","id":"CVE-2022-0185","kev_date_added":"2024-08-21","published":"2022-02-11"},{"cvss_score":8.4,"headline":"Linux Kernel Privilege Escalation","id":"CVE-2013-2094","kev_date_added":"2022-09-15","published":"2013-05-14"},{"cvss_score":7.8,"headline":"Linux Kernel Unspecified","id":"CVE-2026-53362","kev_date_added":"2026-08-27","published":"2026-07-04"},{"cvss_score":7.8,"headline":"Linux Kernel Missing Initialization of a Variable","id":"CVE-2026-46300","kev_date_added":"2026-10-28","published":"2026-05-23"},{"cvss_score":7.8,"headline":"Linux Kernel Race Condition","id":"CVE-2025-39964","kev_date_added":"2026-09-18","published":"2025-10-13"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-05-11","vendors":["Linux"]},"summary":"A type casting error in the Linux kernel's pfn_to_kaddr macro causes guest crashes in SEV-SNP environments when handling high memory addresses.","url":"https://insights.sbomify.com/CVE-2023-52659/"}