{"answers":{"affected":"It affects 7 products.","exploited":"There is no known exploitation of CVE-2023-6816 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2023-6816 is a critical memory corruption vulnerability in Debian Debian Linux, published on 18 Jan 2024. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2023-6816 and fix it if it is affected.\n\nWhat it is: CVE-2023-6816 is a critical memory corruption vulnerability in Debian Debian Linux, published on 18 Jan 2024. 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-2023-6816 in the wild and no public exploit code.\n\nAffected product: Debian Debian Linux. 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-2023-6816/ (Markdown: https://insights.sbomify.com/CVE-2023-6816/index.md)","id":"CVE-2023-6816","markdown":"https://insights.sbomify.com/CVE-2023-6816/index.md","name":"CVE-2023-6816","record":{"aliases":["AZL-33353","AZL-44742","BELL-CVE-2023-6816","CLSA-2025-1763124505","DEBIAN-CVE-2023-6816","GHSA-pcjv-393q-rqf2","UBUNTU-CVE-2023-6816"],"analysis":{"component_type":"operating_system","fix_type":"patch","impacts":["code_execution","privilege_escalation"],"network_reachable":"yes","non_default_config":false,"product_category":"X.Org Server","requires_auth":"none","summary":"A heap buffer overflow in X.Org Server allows attackers to execute arbitrary code or escalate privileges via crafted button mappings.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[{"product":"debian_linux","vendor":"debian"},{"product":"fedora","vendor":"fedoraproject"},{"product":"enterprise_linux_desktop","vendor":"redhat"},{"product":"enterprise_linux_server","vendor":"redhat"},{"product":"enterprise_linux_workstation","vendor":"redhat"},{"product":"x_server","vendor":"x.org"},{"product":"xwayland","vendor":"x.org"}],"cvss":{"score":9.8,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/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 X.Org server. Both DeviceFocusEvent and the XIQueryPointer reply contain a bit for each logical button currently down. Buttons can be arbitrarily mapped to any value up to 255, but the X.Org Server was only allocating space for the device's particular number of buttons, leading to a heap overflow if a bigger value was used.","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":"Xorg-x11-server: heap buffer overflow in devicefocusevent and procxiquerypointer","id":"CVE-2023-6816","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"debian:debian_linux","products":["debian:debian_linux","fedoraproject:fedora","redhat:enterprise_linux_desktop","redhat:enterprise_linux_server","redhat:enterprise_linux_workstation","x.org:x_server"],"type":"memory_corruption","year":"2023"},"n_packages":0,"n_references":17,"next":{"headline":"Use-after-free in Linux kernel's netfilter: nf_tables component","id":"CVE-2023-6817"},"packages":[],"prev":{"headline":"Information disclosure in MELSEC iQ-R Series SIL2 Process CPU R08PSFCPU","id":"CVE-2023-6815"},"products":["Red Hat Enterprise Linux 6","Red Hat Enterprise Linux 6 Extended Lifecycle Support  - EXTENSION","Red Hat Enterprise Linux 7","Red Hat Enterprise Linux 8","Red Hat Enterprise Linux 8.2 Advanced Update Support","Red Hat Enterprise Linux 8.2 Telecommunications Update Service","Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions","Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support","Red Hat Enterprise Linux 8.4 Telecommunications Update Service","Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions","Red Hat Enterprise Linux 8.6 Extended Update Support","Red Hat Enterprise Linux 8.8 Extended Update Support","Red Hat Enterprise Linux 9","Red Hat Enterprise Linux 9.0 Extended Update Support","Red Hat Enterprise Linux 9.2 Extended Update Support"],"published":"2024-01-18","related":[{"cvss_score":10,"headline":"ProFTPD Improper Access Control","id":"CVE-2015-3306","kev_date_added":"2026-10-08","published":"2015-05-18"},{"cvss_score":9.9,"headline":"RoundCube Webmail Deserialization of Untrusted Data","id":"CVE-2025-49113","kev_date_added":"2026-02-20","published":"2025-06-02"},{"cvss_score":9.8,"headline":"GNU InetUtils Argument Injection","id":"CVE-2026-24061","kev_date_added":"2026-01-26","published":"2026-01-21"},{"cvss_score":9.8,"headline":"Linux Kernel Improper Check for Unusual or Exceptional Conditions","id":"CVE-2025-39682","kev_date_added":"2026-09-18","published":"2025-09-05"},{"cvss_score":9.8,"headline":"Mozilla Firefox Use-After-Free","id":"CVE-2024-9680","kev_date_added":"2024-10-15","published":"2024-10-09"},{"cvss_score":9.8,"headline":"RARLAB UnRAR Directory Traversal","id":"CVE-2022-30333","kev_date_added":"2022-08-09","published":"2022-05-09"},{"cvss_score":9.8,"headline":"Roundcube Webmail SQL Injection","id":"CVE-2021-44026","kev_date_added":"2023-06-22","published":"2021-11-19"}],"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":"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":"2026-03-19","vendors":["Red Hat"]},"summary":"A heap buffer overflow in X.Org Server allows attackers to execute arbitrary code or escalate privileges via crafted button mappings.","url":"https://insights.sbomify.com/CVE-2023-6816/"}