{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-62428 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-62428 is a high-severity vulnerability in Xen, published on 28 Jul 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-2026-62428 and fix it if it is affected.\n\nWhat it is: CVE-2026-62428 is a high-severity vulnerability in Xen, published on 28 Jul 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-2026-62428 in the wild and no public exploit code.\n\nAffected product: Xen. 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-2026-62428/ (Markdown: https://insights.sbomify.com/CVE-2026-62428/index.md)","id":"CVE-2026-62428","markdown":"https://insights.sbomify.com/CVE-2026-62428/index.md","name":"CVE-2026-62428","record":{"aliases":["ALPINE-CVE-2026-62428","DEBIAN-CVE-2026-62428","GHSA-qmxg-rhxf-8273","UBUNTU-CVE-2026-62428"],"analysis":{"component_type":"operating_system","fix_type":"patch","impacts":["privilege_escalation","data_read"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Xen hypervisor","requires_auth":"low_privilege","summary":"A race condition in Xen's grant-copy allows attackers to bypass permission checks, potentially leading to privilege escalation or unauthorized data access.","user_interaction":"not_required","vuln_class":"race_condition"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"XEN","cpe":[],"cvss":{"score":7.8,"severity":"high","source":"cisa-adp","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-367","name":"Time-of-check Time-of-use (TOCTOU) Race Condition"}],"description":"When grant-copy operations are processed, the respective grant may or may\nnot already be in use by another operation (a mapping or another copy).\nFor all copy operations the referenced guest frame is looked up.  When\nanother operation is already active for the grant (the grant is \"pinned\"),\nwhat is being supplied back to actually carry out permission checks and\ncopy operation may not be consistent: The permission check may be carried\nout on a page different from the one involved in the copy.","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":"grant-table: type confusion in grant-copy","id":"CVE-2026-62428","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"race_condition","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"vNUMA domain cleanup may race other operations","id":"CVE-2026-62429"},"packages":[],"prev":{"headline":"sysctl and platform-op locks open to abuse","id":"CVE-2026-62427"},"products":["Xen"],"published":"2026-07-28","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-07-28","vendors":["Xen"]},"summary":"A race condition in Xen's grant-copy allows attackers to bypass permission checks, potentially leading to privilege escalation or unauthorized data access.","url":"https://insights.sbomify.com/CVE-2026-62428/"}