{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2025-11234 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2025-11234 is a high-severity use after free vulnerability in Red Hat Enterprise Linux 10, published on 3 Oct 2025. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2025-11234 and fix it if it is affected.\n\nWhat it is: CVE-2025-11234 is a high-severity use after free vulnerability in Red Hat Enterprise Linux 10, published on 3 Oct 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2025-11234 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-2025-11234/ (Markdown: https://insights.sbomify.com/CVE-2025-11234/index.md)","id":"CVE-2025-11234","markdown":"https://insights.sbomify.com/CVE-2025-11234/index.md","name":"CVE-2025-11234","record":{"aliases":["ALSA-2026:1831","ALSA-2026:18772","ALSA-2026:5578","AZL-68193","AZL-68202","CLSA-2026-1779580341","CLSA-2026-1779581056","DEBIAN-CVE-2025-11234","GHSA-hm8v-8c3v-cxfq","OESA-2026-1263","RHSA-2025:23228","RHSA-2026:1831","RHSA-2026:18772","RHSA-2026:22147","RHSA-2026:3077","RHSA-2026:3165","RHSA-2026:5578","RLSA-2026:1831","RLSA-2026:18772","RLSA-2026:5578","SUSE-SU-2026:0356-1","SUSE-SU-2026:0436-1","UBUNTU-CVE-2025-11234"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"QEMU virtualization","requires_auth":"none","summary":"A malicious client can cause a denial of service in QEMU's VNC WebSocket handshake via a use-after-free vulnerability before authentication.","user_interaction":"not_required","vuln_class":"use_after_free"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[],"cvss":{"score":7.5,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-416","name":"Use After Free"}],"description":"A flaw was found in QEMU. If the QIOChannelWebsock object is freed while it is waiting to complete a handshake, a GSource is leaked. This can lead to the callback firing later on and triggering a use-after-free in the use of the channel. This can be abused by a malicious client with network access to the VNC WebSocket port to cause a denial of service during the WebSocket handshake prior to the VNC client authentication.","ecosystems":["AlmaLinux:10","AlmaLinux:8","AlmaLinux:9","Red Hat:enterprise_linux:10.1","Red Hat:enterprise_linux:8::appstream","Red Hat:enterprise_linux:8::crb","Red Hat:enterprise_linux:9::appstream","Red Hat:rhel_e4s:9.0::appstream","Red Hat:rhel_e4s:9.2::appstream","Red Hat:rhel_eus:9.4::appstream","Rocky Linux:10","Rocky Linux:8","Rocky Linux:9","SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS","SUSE:Linux Enterprise High Performance Computing 15 SP4-LTSS","SUSE:Linux Enterprise Micro 5.2","SUSE:Linux Enterprise Micro 5.3","SUSE:Linux Enterprise Micro 5.4","SUSE:Linux Enterprise Server 15 SP4-LTSS","SUSE:Linux Enterprise Server for SAP Applications 15 SP4"],"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: vnc websocket handshake use-after-free","id":"CVE-2025-11234","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"use_after_free","year":"2025"},"n_packages":800,"n_references":15,"next":{"headline":"MOVEit Transfer REST API does not require current password in order to initiate the password change process","id":"CVE-2025-11235"},"packages":[{"ecosystem":"AlmaLinux:10","fixed":["18:10.0.0-14.el10_1.5.alma.1"],"introduced":["0"],"last_affected":[],"package":"qemu-guest-agent","purl":"pkg:rpm/almalinux/qemu-guest-agent","source":"ALSA-2026:1831"},{"ecosystem":"AlmaLinux:10","fixed":["18:10.0.0-14.el10_1.5.alma.1"],"introduced":["0"],"last_affected":[],"package":"qemu-img","purl":"pkg:rpm/almalinux/qemu-img","source":"ALSA-2026:1831"},{"ecosystem":"AlmaLinux:10","fixed":["18:10.0.0-14.el10_1.5.alma.1"],"introduced":["0"],"last_affected":[],"package":"qemu-kvm","purl":"pkg:rpm/almalinux/qemu-kvm","source":"ALSA-2026:1831"},{"ecosystem":"AlmaLinux:10","fixed":["18:10.0.0-14.el10_1.5.alma.1"],"introduced":["0"],"last_affected":[],"package":"qemu-kvm-audio-pa","purl":"pkg:rpm/almalinux/qemu-kvm-audio-pa","source":"ALSA-2026:1831"},{"ecosystem":"AlmaLinux:10","fixed":["18:10.0.0-14.el10_1.5.alma.1"],"introduced":["0"],"last_affected":[],"package":"qemu-kvm-block-blkio","purl":"pkg:rpm/almalinux/qemu-kvm-block-blkio","source":"ALSA-2026:1831"},{"ecosystem":"AlmaLinux:10","fixed":["18:10.0.0-14.el10_1.5.alma.1"],"introduced":["0"],"last_affected":[],"package":"qemu-kvm-block-curl","purl":"pkg:rpm/almalinux/qemu-kvm-block-curl","source":"ALSA-2026:1831"},{"ecosystem":"AlmaLinux:10","fixed":["18:10.0.0-14.el10_1.5.alma.1"],"introduced":["0"],"last_affected":[],"package":"qemu-kvm-block-rbd","purl":"pkg:rpm/almalinux/qemu-kvm-block-rbd","source":"ALSA-2026:1831"},{"ecosystem":"AlmaLinux:10","fixed":["18:10.0.0-14.el10_1.5.alma.1"],"introduced":["0"],"last_affected":[],"package":"qemu-kvm-common","purl":"pkg:rpm/almalinux/qemu-kvm-common","source":"ALSA-2026:1831"},{"ecosystem":"AlmaLinux:10","fixed":["18:10.0.0-14.el10_1.5.alma.1"],"introduced":["0"],"last_affected":[],"package":"qemu-kvm-core","purl":"pkg:rpm/almalinux/qemu-kvm-core","source":"ALSA-2026:1831"},{"ecosystem":"AlmaLinux:10","fixed":["18:10.0.0-14.el10_1.5.alma.1"],"introduced":["0"],"last_affected":[],"package":"qemu-kvm-device-display-virtio-gpu","purl":"pkg:rpm/almalinux/qemu-kvm-device-display-virtio-gpu","source":"ALSA-2026:1831"},{"ecosystem":"AlmaLinux:10","fixed":["18:10.0.0-14.el10_1.5.alma.1"],"introduced":["0"],"last_affected":[],"package":"qemu-kvm-device-display-virtio-gpu-ccw","purl":"pkg:rpm/almalinux/qemu-kvm-device-display-virtio-gpu-ccw","source":"ALSA-2026:1831"},{"ecosystem":"AlmaLinux:10","fixed":["18:10.0.0-14.el10_1.5.alma.1"],"introduced":["0"],"last_affected":[],"package":"qemu-kvm-device-display-virtio-gpu-pci","purl":"pkg:rpm/almalinux/qemu-kvm-device-display-virtio-gpu-pci","source":"ALSA-2026:1831"},{"ecosystem":"AlmaLinux:10","fixed":["18:10.0.0-14.el10_1.5.alma.1"],"introduced":["0"],"last_affected":[],"package":"qemu-kvm-device-display-virtio-vga","purl":"pkg:rpm/almalinux/qemu-kvm-device-display-virtio-vga","source":"ALSA-2026:1831"},{"ecosystem":"AlmaLinux:10","fixed":["18:10.0.0-14.el10_1.5.alma.1"],"introduced":["0"],"last_affected":[],"package":"qemu-kvm-device-usb-host","purl":"pkg:rpm/almalinux/qemu-kvm-device-usb-host","source":"ALSA-2026:1831"},{"ecosystem":"AlmaLinux:10","fixed":["18:10.0.0-14.el10_1.5.alma.1"],"introduced":["0"],"last_affected":[],"package":"qemu-kvm-device-usb-redirect","purl":"pkg:rpm/almalinux/qemu-kvm-device-usb-redirect","source":"ALSA-2026:1831"},{"ecosystem":"AlmaLinux:10","fixed":["18:10.0.0-14.el10_1.5.alma.1"],"introduced":["0"],"last_affected":[],"package":"qemu-kvm-docs","purl":"pkg:rpm/almalinux/qemu-kvm-docs","source":"ALSA-2026:1831"},{"ecosystem":"AlmaLinux:10","fixed":["18:10.0.0-14.el10_1.5.alma.1"],"introduced":["0"],"last_affected":[],"package":"qemu-kvm-tools","purl":"pkg:rpm/almalinux/qemu-kvm-tools","source":"ALSA-2026:1831"},{"ecosystem":"AlmaLinux:10","fixed":["18:10.0.0-14.el10_1.5.alma.1"],"introduced":["0"],"last_affected":[],"package":"qemu-kvm-ui-egl-headless","purl":"pkg:rpm/almalinux/qemu-kvm-ui-egl-headless","source":"ALSA-2026:1831"},{"ecosystem":"AlmaLinux:10","fixed":["18:10.0.0-14.el10_1.5.alma.1"],"introduced":["0"],"last_affected":[],"package":"qemu-kvm-ui-opengl","purl":"pkg:rpm/almalinux/qemu-kvm-ui-opengl","source":"ALSA-2026:1831"},{"ecosystem":"AlmaLinux:10","fixed":["18:10.0.0-14.el10_1.5.alma.1"],"introduced":["0"],"last_affected":[],"package":"qemu-pr-helper","purl":"pkg:rpm/almalinux/qemu-pr-helper","source":"ALSA-2026:1831"},{"ecosystem":"AlmaLinux:8","fixed":["20210217-2.module_el8.10.0+3768+dfd76e10"],"introduced":["0"],"last_affected":[],"package":"SLOF","purl":"pkg:rpm/almalinux/SLOF","source":"ALSA-2026:5578"},{"ecosystem":"AlmaLinux:8","fixed":["1.3.18-23.module_el8.6.0+2880+7d9e3703"],"introduced":["0"],"last_affected":[],"package":"hivex","purl":"pkg:rpm/almalinux/hivex","source":"ALSA-2026:5578"},{"ecosystem":"AlmaLinux:8","fixed":["1.3.18-23.module_el8.6.0+3161+a07c0ea5"],"introduced":["0"],"last_affected":[],"package":"hivex","purl":"pkg:rpm/almalinux/hivex","source":"ALSA-2026:5578"},{"ecosystem":"AlmaLinux:8","fixed":["1.3.18-23.m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standard library didn't detect all path separators on Cygwin","id":"CVE-2025-11233"},"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 8.4 Advanced Mission Critical Update Support","Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On","Red Hat Enterprise Linux 8.8 Telecommunications Update Service","Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions","Red Hat Enterprise Linux 9","Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions","Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions","Red Hat Enterprise Linux 9.4 Extended Update Support","Red Hat OpenShift Container Platform 4.12","Red Hat OpenShift Container Platform 4.16","Red Hat OpenShift Container Platform 4.17","Red Hat OpenShift Container Platform 4.18"],"published":"2025-10-03","related":[],"sources":[{"class":"attribution","licence":"MIT","name":"AlmaLinux","prefix":"ALSA"},{"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":"partial"},"state":"PUBLISHED","updated":"2026-10-09","vendors":["Red Hat"]},"summary":"A malicious client can cause a denial of service in QEMU's VNC WebSocket handshake via a use-after-free vulnerability before authentication.","url":"https://insights.sbomify.com/CVE-2025-11234/"}