{"answers":{"affected":"It affects 3 products.","exploited":"There is no known exploitation of CVE-2023-6546 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2023-6546 is a high-severity vulnerability in Fedoraproject Fedora, published on 21 Dec 2023. 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-2023-6546 and fix it if it is affected.\n\nWhat it is: CVE-2023-6546 is a high-severity vulnerability in Fedoraproject Fedora, published on 21 Dec 2023. 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-2023-6546 in the wild and no public exploit code.\n\nAffected product: Fedoraproject Fedora. 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-2023-6546/ (Markdown: https://insights.sbomify.com/CVE-2023-6546/index.md)","id":"CVE-2023-6546","markdown":"https://insights.sbomify.com/CVE-2023-6546/index.md","name":"CVE-2023-6546","record":{"aliases":["AZL-32284","DEBIAN-CVE-2023-6546","GHSA-v727-f437-6cxx","OESA-2023-1990","RHSA-2024:0937","RHSA-2024:1055","RHSA-2024:1612","RHSA-2024:4577","RHSA-2024:4970","UBUNTU-CVE-2023-6546"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["privilege_escalation"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel","requires_auth":"low_privilege","summary":"A race condition in the Linux kernel GSM multiplexor allows local unprivileged users to escalate privileges via a use-after-free vulnerability.","user_interaction":"not_required","vuln_class":"race_condition"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[{"product":"fedora","vendor":"fedoraproject"},{"product":"linux_kernel","vendor":"linux"},{"product":"enterprise_linux","vendor":"redhat"}],"cvss":{"score":7,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-362","name":"Concurrent Execution using Shared Resource with Improper Synchronization"},{"id":"CWE-366","name":"Race Condition within a Thread"}],"description":"A race condition was found in the GSM 0710 tty multiplexor in the Linux kernel. This issue occurs when two threads execute the GSMIOC_SETCONF ioctl on the same tty file descriptor with the gsm line discipline enabled, and can lead to a use-after-free problem on a struct gsm_dlci while restarting the gsm mux. This could allow a local unprivileged user to escalate their privileges on the system.","ecosystems":["Red Hat:enterprise_linux:8::baseos","Red Hat:rhel_aus:8.2::baseos","Red Hat:rhel_e4s:8.4::baseos","Red Hat:rhel_eus:8.6::baseos","Red Hat:rhel_eus:9.2::baseos"],"exploits":{"exploitdb":0,"first_seen":"2025-02-01","github_poc":1,"max_poc_stars":1,"metasploit":0,"nuclei":0,"refs":[{"date":"2025-02-01T09:40:54Z","kind":"github_poc","ref":"https://github.com/harithlab/CVE-2023-6546","stars":1,"title":null}],"tier":"poc_unverified"},"has_fix":true,"headline":"Kernel: gsm multiplexing race condition leads to privilege escalation","id":"CVE-2023-6546","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"fedoraproject:fedora","products":["fedoraproject:fedora","linux:linux_kernel","redhat:enterprise_linux"],"type":"race_condition","year":"2023"},"n_packages":69,"n_references":23,"next":{"headline":"Playbooks access/modification by removed team member","id":"CVE-2023-6547"},"packages":[{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:1-2.el8_9"],"introduced":["0"],"last_affected":[],"package":"kpatch-patch-4_18_0-513_11_1","purl":"pkg:rpm/redhat/kpatch-patch-4_18_0-513_11_1","source":"RHSA-2024:1612"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:1-2.el8_9"],"introduced":["0"],"last_affected":[],"package":"kpatch-patch-4_18_0-513_11_1-debuginfo","purl":"pkg:rpm/redhat/kpatch-patch-4_18_0-513_11_1-debuginfo","source":"RHSA-2024:1612"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:1-2.el8_9"],"introduced":["0"],"last_affected":[],"package":"kpatch-patch-4_18_0-513_11_1-debugsource","purl":"pkg:rpm/redhat/kpatch-patch-4_18_0-513_11_1-debugsource","source":"RHSA-2024:1612"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:1-4.el8_9"],"introduced":["0"],"last_affected":[],"package":"kpatch-patch-4_18_0-513_5_1","purl":"pkg:rpm/redhat/kpatch-patch-4_18_0-513_5_1","source":"RHSA-2024:1612"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:1-4.el8_9"],"introduced":["0"],"last_affected":[],"package":"kpatch-patch-4_18_0-513_5_1-debuginfo","purl":"pkg:rpm/redhat/kpatch-patch-4_18_0-513_5_1-debuginfo","source":"RHSA-2024:1612"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:1-4.el8_9"],"introduced":["0"],"last_affected":[],"package":"kpatch-patch-4_18_0-513_5_1-debugsource","purl":"pkg:rpm/redhat/kpatch-patch-4_18_0-513_5_1-debugsource","source":"RHSA-2024:1612"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:1-3.el8_9"],"introduced":["0"],"last_affected":[],"package":"kpatch-patch-4_18_0-513_9_1","purl":"pkg:rpm/redhat/kpatch-patch-4_18_0-513_9_1","source":"RHSA-2024:1612"},{"ecosystem":"Red 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Hat:rhel_eus:8.6::baseos","fixed":["0:1-5.el8_6"],"introduced":["0"],"last_affected":[],"package":"kpatch-patch-4_18_0-372_70_1","purl":"pkg:rpm/redhat/kpatch-patch-4_18_0-372_70_1","source":"RHSA-2024:0937"}],"prev":{"headline":"Beckhoff: Open redirect in TwinCAT/BSD package authelia-bhf","id":"CVE-2023-6545"},"products":["RHOL-5.7-RHEL-8","Red Hat Enterprise Linux 6","Red Hat Enterprise Linux 7","Red Hat Enterprise Linux 8","Red Hat Enterprise Linux 8.2 Advanced Update Support","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","Red Hat Virtualization 4 for Red Hat Enterprise Linux 8"],"published":"2023-12-21","related":[{"cvss_score":9.8,"headline":"PHP-CGI OS Command Injection","id":"CVE-2024-4577","kev_date_added":"2024-06-12","published":"2024-06-09"},{"cvss_score":9.8,"headline":"Grafana Authentication Bypass","id":"CVE-2021-39226","kev_date_added":"2022-08-25","published":"2021-10-05"},{"cvss_score":9.8,"headline":"VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow","id":"CVE-2019-5544","kev_date_added":"2021-11-03","published":"2019-12-06"},{"cvss_score":9.6,"headline":"Google Chromium V8 Type Confusion","id":"CVE-2024-4947","kev_date_added":"2024-05-20","published":"2024-05-15"},{"cvss_score":9.6,"headline":"Google Chromium Visuals Use-After-Free","id":"CVE-2024-4671","kev_date_added":"2024-05-13","published":"2024-05-09"},{"cvss_score":9.6,"headline":"Google Chromium Mojo Insufficient Data Validation","id":"CVE-2022-3075","kev_date_added":"2022-09-08","published":"2022-09-26"},{"cvss_score":9.6,"headline":"Google Chromium Indexed DB API Use-After-Free","id":"CVE-2021-30633","kev_date_added":"2021-11-03","published":"2021-10-08"}],"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":"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)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-08-06","vendors":["Red Hat"]},"summary":"A race condition in the Linux kernel GSM multiplexor allows local unprivileged users to escalate privileges via a use-after-free vulnerability.","url":"https://insights.sbomify.com/CVE-2023-6546/"}