{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-43045 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-43045 is a medium-severity memory corruption vulnerability in Linux kernel, published on 1 May 2026. 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-2026-43045 and fix it if it is affected.\n\nWhat it is: CVE-2026-43045 is a medium-severity memory corruption vulnerability in Linux kernel, published on 1 May 2026. 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-2026-43045 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-2026-43045/ (Markdown: https://insights.sbomify.com/CVE-2026-43045/index.md)","id":"CVE-2026-43045","markdown":"https://insights.sbomify.com/CVE-2026-43045/index.md","name":"CVE-2026-43045","record":{"aliases":["BELL-CVE-2026-43045","DEBIAN-CVE-2026-43045","GHSA-v9h6-w2p5-9327","ROOT-OS-UBUNTU-2204-CVE-2026-43045","ROOT-OS-UBUNTU-2404-CVE-2026-43045","UBUNTU-CVE-2026-43045"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["code_execution","privilege_escalation"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel","requires_auth":"low_privilege","summary":"A flaw in the Linux kernel's mshv driver allows memory corruption due to improper error handling during page pinning, potentially enabling privilege escalation.","user_interaction":"not_required","vuln_class":"memory_corruption"},"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\nmshv: Fix error handling in mshv_region_pin\n\nThe current error handling has two issues:\n\nFirst, pin_user_pages_fast() can return a short pin count (less than\nrequested but greater than zero) when it cannot pin all requested pages.\nThis is treated as success, leading to partially pinned regions being\nused, which causes memory corruption.\n\nSecond, when an error occurs mid-loop, already pinned pages from the\ncurrent batch are not properly accounted for before calling\nmshv_region_invalidate_pages(), causing a page reference leak.\n\nTreat short pins as errors and fix partial batch accounting before\ncleanup.","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":"mshv: Fix error handling in mshv_region_pin","id":"CVE-2026-43045","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"memory_corruption","year":"2026"},"n_packages":0,"n_references":3,"next":{"headline":"btrfs: reject root items with drop_progress and zero drop_level","id":"CVE-2026-43046"},"packages":[],"prev":{"headline":"crypto: caam - fix DMA corruption on long hmac keys","id":"CVE-2026-43044"},"products":["Linux"],"published":"2026-05-01","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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-10-15","vendors":["Linux"]},"summary":"A flaw in the Linux kernel's mshv driver allows memory corruption due to improper error handling during page pinning, potentially enabling privilege escalation.","url":"https://insights.sbomify.com/CVE-2026-43045/"}