{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-3842 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-3842 is a high-severity memory corruption vulnerability in Red Hat Enterprise Linux 10, published on 16 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-2026-3842 and fix it if it is affected.\n\nWhat it is: CVE-2026-3842 is a high-severity memory corruption vulnerability in Red Hat Enterprise Linux 10, published on 16 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-2026-3842 in the wild and no public exploit code.\n\nAffected product: Red Hat Enterprise Linux 10. 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-2026-3842/ (Markdown: https://insights.sbomify.com/CVE-2026-3842/index.md)","id":"CVE-2026-3842","markdown":"https://insights.sbomify.com/CVE-2026-3842/index.md","name":"CVE-2026-3842","record":{"aliases":["AZL-92502","BELL-CVE-2026-3842","DEBIAN-CVE-2026-3842","ECHO-334b-1c04-aa69","GHSA-6mwr-p34x-55cv","UBUNTU-CVE-2026-3842"],"analysis":{"component_type":"operating_system","fix_type":"patch","impacts":["data_read","denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"QEMU KVM hypervisor","requires_auth":"low_privilege","summary":"A local attacker in a guest VM can trigger an out-of-bounds write in QEMU, leading to memory corruption, information disclosure, or denial of service.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"fedora","cpe":[],"cvss":{"score":7.8,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-787","name":"Out-of-bounds Write"}],"description":"A flaw was found in QEMU. This vulnerability allows a local attacker within a guest virtual machine to write data beyond its allocated memory. This occurs when cpu_physical_memory_map() returns a shorter length than expected, leading to an out-of-bounds write. Successful exploitation could result in unauthorized access to guest memory or corruption of heap-allocated objects, potentially causing information disclosure, data integrity issues, or a denial of service.","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":"Qemu-kvm: hyperv/syndbg: missing mapped-length guard after cpu_physical_memory_map causes host oob write","id":"CVE-2026-3842","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"SQL Injection in Nefteprodukttekhnika BUK TS-G Allows Remote Code Execution","id":"CVE-2026-3843"},"packages":[],"prev":{"headline":"Command Injection Vulnerability in Telnet CLI on TP-Link TL-MR6400","id":"CVE-2026-3841"},"products":["Red Hat Enterprise Linux 10","Red Hat Enterprise Linux 6","Red Hat Enterprise Linux 7","Red Hat Enterprise Linux 8","Red Hat Enterprise Linux 9","Red Hat OpenShift Container Platform 4"],"published":"2026-07-16","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":"2026-09-01","vendors":["Red Hat"]},"summary":"A local attacker in a guest VM can trigger an out-of-bounds write in QEMU, leading to memory corruption, information disclosure, or denial of service.","url":"https://insights.sbomify.com/CVE-2026-3842/"}