{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-18917 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-18917 is a high-severity vulnerability in Red Hat Enterprise Linux 10, published on 20 Aug 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-2026-18917 and fix it if it is affected.\n\nWhat it is: CVE-2026-18917 is a high-severity vulnerability in Red Hat Enterprise Linux 10, published on 20 Aug 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-2026-18917 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-2026-18917/ (Markdown: https://insights.sbomify.com/CVE-2026-18917/index.md)","id":"CVE-2026-18917","markdown":"https://insights.sbomify.com/CVE-2026-18917/index.md","name":"CVE-2026-18917","record":{"aliases":["AZL-97485","BELL-CVE-2026-18917","DEBIAN-CVE-2026-18917","GHSA-6jq9-9f7w-h7mc","RHSA-2026:68509","RHSA-2026:68510","RHSA-2026:68511","RHSA-2026:68514","UBUNTU-CVE-2026-18917"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["privilege_escalation","denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Virtualization management library","requires_auth":"low_privilege","summary":"An integer overflow in libvirt's NodeGetFreePages RPC handler allows local attackers to trigger a heap buffer overflow, potentially causing denial of service or privilege escalation.","user_interaction":"not_required","vuln_class":"integer_overflow"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","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-190","name":"Integer Overflow or Wraparound"}],"description":"A flaw was found in libvirt. An unprivileged local user could exploit an integer overflow vulnerability in the NodeGetFreePages RPC handler. This flaw allows crafted values to bypass a size check, leading to an undersized memory buffer. Subsequently, real NUMA node data can overwrite this buffer. This heap buffer overflow can corrupt the root libvirt daemon's memory, potentially leading to a denial of service or local privilege escalation.","ecosystems":["Red Hat:enterprise_linux_eus:10.0","Red Hat:rhel_e4s:9.2::appstream","Red Hat:rhel_e4s:9.4::appstream","Red Hat:rhel_eus:9.6::appstream","Red Hat:rhel_eus:9.6::crb"],"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":"Libvirt: integer overflow in nodegetfreepages rpc handler leading to heap buffer overflow","id":"CVE-2026-18917","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"integer_overflow","year":"2026"},"n_packages":242,"n_references":12,"next":{"headline":"OAuth 1.0 session-fixation chain via unauthenticated provisional-consumer registration and insecure v1_0Allowed default","id":"CVE-2026-18918"},"packages":[{"ecosystem":"Red Hat:enterprise_linux_eus:10.0","fixed":["0:10.10.0-8.12.el10_0"],"introduced":["0"],"last_affected":[],"package":"libvirt","purl":"pkg:rpm/redhat/libvirt","source":"RHSA-2026:68510"},{"ecosystem":"Red Hat:enterprise_linux_eus:10.0","fixed":["0:10.10.0-8.12.el10_0"],"introduced":["0"],"last_affected":[],"package":"libvirt-client","purl":"pkg:rpm/redhat/libvirt-client","source":"RHSA-2026:68510"},{"ecosystem":"Red Hat:enterprise_linux_eus:10.0","fixed":["0:10.10.0-8.12.el10_0"],"introduced":["0"],"last_affected":[],"package":"libvirt-client-debuginfo","purl":"pkg:rpm/redhat/libvirt-client-debuginfo","source":"RHSA-2026:68510"},{"ecosystem":"Red Hat:enterprise_linux_eus:10.0","fixed":["0:10.10.0-8.12.el10_0"],"introduced":["0"],"last_affected":[],"package":"libvirt-client-qemu","purl":"pkg:rpm/redhat/libvirt-client-qemu","source":"RHSA-2026:68510"},{"ecosystem":"Red Hat:enterprise_linux_eus:10.0","fixed":["0:10.10.0-8.12.el10_0"],"introduced":["0"],"last_affected":[],"package":"libvirt-daemon","purl":"pkg:rpm/redhat/libvirt-daemon","source":"RHSA-2026:68510"},{"ecosystem":"Red Hat:enterprise_linux_eus:10.0","fixed":["0:10.10.0-8.12.el10_0"],"introduced":["0"],"last_affected":[],"package":"libvirt-daemon-common","purl":"pkg:rpm/redhat/libvirt-daemon-common","source":"RHSA-2026:68510"},{"ecosystem":"Red Hat:enterprise_linux_eus:10.0","fixed":["0:10.10.0-8.12.el10_0"],"introduced":["0"],"last_affected":[],"package":"libvirt-daemon-common-debuginfo","purl":"pkg:rpm/redhat/libvirt-daemon-common-debuginfo","source":"RHSA-2026:68510"},{"ecosystem":"Red Hat:enterprise_linux_eus:10.0","fixed":["0:10.10.0-8.12.el10_0"],"introduced":["0"],"last_affected":[],"package":"libvirt-daemon-config-network","purl":"pkg:rpm/redhat/libvirt-daemon-config-network","source":"RHSA-2026:68510"},{"ecosystem":"Red Hat:enterprise_linux_eus:10.0","fixed":["0:10.10.0-8.12.el10_0"],"introduced":["0"],"last_affected":[],"package":"libvirt-daemon-config-nwfilter","purl":"pkg:rpm/redhat/libvirt-daemon-config-nwfilter","source":"RHSA-2026:68510"},{"ecosystem":"Red Hat:enterprise_linux_eus:10.0","fixed":["0:10.10.0-8.12.el10_0"],"introduced":["0"],"last_affected":[],"package":"libvirt-daemon-debuginfo","purl":"pkg:rpm/redhat/libvirt-daemon-debuginfo","source":"RHSA-2026:68510"},{"ecosystem":"Red Hat:enterprise_linux_eus:10.0","fixed":["0:10.10.0-8.12.el10_0"],"introduced":["0"],"last_affected":[],"package":"libvirt-daemon-driver-interface","purl":"pkg:rpm/redhat/libvirt-daemon-driver-interface","source":"RHSA-2026:68510"},{"ecosystem":"Red Hat:enterprise_linux_eus:10.0","fixed":["0:10.10.0-8.12.el10_0"],"introduced":["0"],"last_affected":[],"package":"libvirt-daemon-driver-interface-debuginfo","purl":"pkg:rpm/redhat/libvirt-daemon-driver-interface-debuginfo","source":"RHSA-2026:68510"},{"ecosystem":"Red Hat:enterprise_linux_eus:10.0","fixed":["0:10.10.0-8.12.el10_0"],"introduced":["0"],"last_affected":[],"package":"libvirt-daemon-driver-network","purl":"pkg:rpm/redhat/libvirt-daemon-driver-network","source":"RHSA-2026:68510"},{"ecosystem":"Red Hat:enterprise_linux_eus:10.0","fixed":["0:10.10.0-8.12.el10_0"],"introduced":["0"],"last_affected":[],"package":"libvirt-daemon-driver-network-debuginfo","purl":"pkg:rpm/redhat/libvirt-daemon-driver-network-debuginfo","source":"RHSA-2026:68510"},{"ecosystem":"Red Hat:enterprise_linux_eus:10.0","fixed":["0:10.10.0-8.12.el10_0"],"introduced":["0"],"last_affected":[],"package":"libvirt-daemon-driver-nodedev","purl":"pkg:rpm/redhat/libvirt-daemon-driver-nodedev","source":"RHSA-2026:68510"},{"ecosystem":"Red Hat:enterprise_linux_eus:10.0","fixed":["0:10.10.0-8.12.el10_0"],"introduced":["0"],"last_affected":[],"package":"libvirt-daemon-driver-nodedev-debuginfo","purl":"pkg:rpm/redhat/libvirt-daemon-driver-nodedev-debuginfo","source":"RHSA-2026:68510"},{"ecosystem":"Red Hat:enterprise_linux_eus:10.0","fixed":["0:10.10.0-8.12.el10_0"],"introduced":["0"],"last_affected":[],"package":"libvirt-daemon-driver-nwfilter","purl":"pkg:rpm/redhat/libvirt-daemon-driver-nwfilter","source":"RHSA-2026:68510"},{"ecosystem":"Red Hat:enterprise_linux_eus:10.0","fixed":["0:10.10.0-8.12.el10_0"],"introduced":["0"],"last_affected":[],"package":"libvirt-daemon-driver-nwfilter-debuginfo","purl":"pkg:rpm/redhat/libvirt-daemon-driver-nwfilter-debuginfo","source":"RHSA-2026:68510"},{"ecosystem":"Red Hat:enterprise_linux_eus:10.0","fixed":["0:10.10.0-8.12.el10_0"],"introduced":["0"],"last_affected":[],"package":"libvirt-daemon-driver-qemu","purl":"pkg:rpm/redhat/libvirt-daemon-driver-qemu","source":"RHSA-2026:68510"},{"ecosystem":"Red Hat:enterprise_linux_eus:10.0","fixed":["0:10.10.0-8.12.el10_0"],"introduced":["0"],"last_affected":[],"package":"libvirt-daemon-driver-qemu-debuginfo","purl":"pkg:rpm/redhat/libvirt-daemon-driver-qemu-debuginfo","source":"RHSA-2026:68510"},{"ecosystem":"Red Hat:enterprise_linux_eus:10.0","fixed":["0:10.10.0-8.12.el10_0"],"introduced":["0"],"last_affected":[],"package":"libvirt-daemon-driver-secret","purl":"pkg:rpm/redhat/libvirt-daemon-driver-secret","source":"RHSA-2026:68510"},{"ecosystem":"Red Hat:enterprise_linux_eus:10.0","fixed":["0:10.10.0-8.12.el10_0"],"introduced":["0"],"last_affected":[],"package":"libvirt-daemon-driver-secret-debuginfo","purl":"pkg:rpm/redhat/libvirt-daemon-driver-secret-debuginfo","source":"RHSA-2026:68510"},{"ecosystem":"Red Hat:enterprise_linux_eus:10.0","fixed":["0:10.10.0-8.12.el10_0"],"introduced":["0"],"last_affected":[],"package":"libvirt-daemon-driver-storage","purl":"pkg:rpm/redhat/libvirt-daemon-driver-storage","source":"RHSA-2026:68510"},{"ecosystem":"Red Hat:enterprise_linux_eus:10.0","fixed":["0:10.10.0-8.12.el10_0"],"introduced":["0"],"last_affected":[],"package":"libvirt-daemon-driver-storage-core","purl":"pkg:rpm/redhat/libvirt-daemon-driver-storage-core","source":"RHSA-2026:68510"},{"ecosystem":"Red Hat:enterprise_linux_eus:10.0","fixed":["0:10.10.0-8.12.el10_0"],"introduced":["0"],"last_affected":[],"package":"libvirt-daemon-driver-storage-core-debuginfo","purl":"pkg:rpm/redhat/libvirt-daemon-driver-storage-core-debuginfo","source":"RHSA-2026:68510"},{"ecosystem":"Red Hat:enterprise_linux_eus:10.0","fixed":["0:10.10.0-8.12.el10_0"],"introduced":["0"],"last_affected":[],"package":"libvirt-daemon-driver-storage-disk","purl":"pkg:rpm/redhat/libvirt-daemon-driver-storage-disk","source":"RHSA-2026:68510"},{"ecosystem":"Red Hat:enterprise_linux_eus:10.0","fixed":["0:10.10.0-8.12.el10_0"],"introduced":["0"],"last_affected":[],"package":"libvirt-daemon-driver-storage-disk-debuginfo","purl":"pkg:rpm/redhat/libvirt-daemon-driver-storage-disk-debuginfo","source":"RHSA-2026:68510"},{"ecosystem":"Red Hat:enterprise_linux_eus:10.0","fixed":["0:10.10.0-8.12.el10_0"],"introduced":["0"],"last_affected":[],"package":"libvirt-daemon-driver-storage-iscsi","purl":"pkg:rpm/redhat/libvirt-daemon-driver-storage-iscsi","source":"RHSA-2026:68510"},{"ecosystem":"Red Hat:enterprise_linux_eus:10.0","fixed":["0:10.10.0-8.12.el10_0"],"introduced":["0"],"last_affected":[],"package":"libvirt-daemon-driver-storage-iscsi-debuginfo","purl":"pkg:rpm/redhat/libvirt-daemon-driver-storage-iscsi-debuginfo","source":"RHSA-2026:68510"},{"ecosystem":"Red Hat:enterprise_linux_eus:10.0","fixed":["0:10.10.0-8.12.el10_0"],"introduced":["0"],"last_affected":[],"package":"libvirt-daemon-driver-storage-logical","purl":"pkg:rpm/redhat/libvirt-daemon-driver-storage-logical","source":"RHSA-2026:68510"},{"ecosystem":"Red Hat:enterprise_linux_eus:10.0","fixed":["0:10.10.0-8.12.el10_0"],"introduced":["0"],"last_affected":[],"package":"libvirt-daemon-driver-storage-logical-debuginfo","purl":"pkg:rpm/redhat/libvirt-daemon-driver-storage-logical-debuginfo","source":"RHSA-2026:68510"},{"ecosystem":"Red Hat:enterprise_linux_eus:10.0","fixed":["0:10.10.0-8.12.el10_0"],"introduced":["0"],"last_affected":[],"package":"libvirt-daemon-driver-storage-mpath","purl":"pkg:rpm/redhat/libvirt-daemon-driver-storage-mpath","source":"RHSA-2026:68510"},{"ecosystem":"Red Hat:enterprise_linux_eus:10.0","fixed":["0:10.10.0-8.12.el10_0"],"introduced":["0"],"last_affected":[],"package":"libvirt-daemon-driver-storage-mpath-debuginfo","purl":"pkg:rpm/redhat/libvirt-daemon-driver-storage-mpath-debuginfo","source":"RHSA-2026:68510"},{"ecosystem":"Red Hat:enterprise_linux_eus:10.0","fixed":["0:10.10.0-8.12.el10_0"],"introduced":["0"],"last_affected":[],"package":"libvirt-daemon-driver-storage-rbd","purl":"pkg:rpm/redhat/libvirt-daemon-driver-storage-rbd","source":"RHSA-2026:68510"},{"ecosystem":"Red Hat:enterprise_linux_eus:10.0","fixed":["0:10.10.0-8.12.el10_0"],"introduced":["0"],"last_affected":[],"package":"libvirt-daemon-driver-storage-rbd-debuginfo","purl":"pkg:rpm/redhat/libvirt-daemon-driver-storage-rbd-debuginfo","source":"RHSA-2026:68510"},{"ecosystem":"Red Hat:enterprise_linux_eus:10.0","fixed":["0:10.10.0-8.12.el10_0"],"introduced":["0"],"last_affected":[],"package":"libvirt-daemon-driver-storage-scsi","purl":"pkg:rpm/redhat/libvirt-daemon-driver-storage-scsi","source":"RHSA-2026:68510"},{"ecosystem":"Red Hat:enterprise_linux_eus:10.0","fixed":["0:10.10.0-8.12.el10_0"],"introduced":["0"],"last_affected":[],"package":"libvirt-daemon-driver-storage-scsi-debuginfo","purl":"pkg:rpm/redhat/libvirt-daemon-driver-storage-scsi-debuginfo","source":"RHSA-2026:68510"},{"ecosystem":"Red Hat:enterprise_linux_eus:10.0","fixed":["0:10.10.0-8.12.el10_0"],"introduced":["0"],"last_affected":[],"package":"libvirt-daemon-kvm","purl":"pkg:rpm/redhat/libvirt-daemon-kvm","source":"RHSA-2026:68510"},{"ecosystem":"Red Hat:enterprise_linux_eus:10.0","fixed":["0:10.10.0-8.12.el10_0"],"introduced":["0"],"last_affected":[],"package":"libvirt-daemon-lock","purl":"pkg:rpm/redhat/libvirt-daemon-lock","source":"RHSA-2026:68510"},{"ecosystem":"Red Hat:enterprise_linux_eus:10.0","fixed":["0:10.10.0-8.12.el10_0"],"introduced":["0"],"last_affected":[],"package":"libvirt-daemon-lock-debuginfo","purl":"pkg:rpm/redhat/libvirt-daemon-lock-debuginfo","source":"RHSA-2026:68510"}],"prev":{"headline":"Remote TCP DoS by throttling the TCP receive window","id":"CVE-2026-18916"},"products":["Red Hat Enterprise Linux 10","Red Hat Enterprise Linux 10.0 Extended Update Support","Red Hat Enterprise Linux 6","Red Hat Enterprise Linux 7 Extended Lifecycle Support","Red Hat Enterprise Linux 8","Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support","Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On","Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support","Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On","Red Hat Enterprise Linux 8.8 Telecommunications Update Service","Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions","Red Hat Enterprise Linux 9","Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions","Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions","Red Hat Enterprise Linux 9.6 Extended Update Support","Red Hat Enterprise Linux for NVIDIA 26"],"published":"2026-08-20","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"Red Hat","prefix":"RHSA"},{"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":"2026-10-05","vendors":["Red Hat"]},"summary":"An integer overflow in libvirt's NodeGetFreePages RPC handler allows local attackers to trigger a heap buffer overflow, potentially causing denial of service or privilege escalation.","url":"https://insights.sbomify.com/CVE-2026-18917/"}