{"answers":{"affected":"It affects 2 products.","exploited":"Yes. Attackers have exploited CVE-2023-0266 in the wild since at least 30 Mar 2023.","fix":"Apply the vendor's patch. US federal agencies must fix it by 20 Apr 2023.","what":"CVE-2023-0266 is a high-severity use after free vulnerability in Debian Debian Linux, published on 30 Jan 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-2023-0266 and fix it if it is affected.\n\nWhat it is: CVE-2023-0266 is a high-severity use after free vulnerability in Debian Debian Linux, published on 30 Jan 2023. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: Yes. Attackers have exploited CVE-2023-0266 in the wild since at least 30 Mar 2023.\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-2023-0266/ (Markdown: https://insights.sbomify.com/CVE-2023-0266/index.md)","id":"CVE-2023-0266","markdown":"https://insights.sbomify.com/CVE-2023-0266/index.md","name":"CVE-2023-0266","record":{"aliases":["A-265303544","AZL-13190","AZL-13229","DEBIAN-CVE-2023-0266","GHSA-h8jm-3c82-6vvq","OESA-2023-1198","OESA-2023-1199","OESA-2023-1200","OESA-2023-1201","PUB-A-265303544","RHSA-2023:1588","RHSA-2023:1590","UBUNTU-CVE-2023-0266"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["privilege_escalation","code_execution"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux Kernel","requires_auth":"low_privilege","summary":"A use-after-free in the Linux Kernel ALSA PCM package allows local attackers to escalate privileges to ring0 access.","user_interaction":"not_required","vuln_class":"use_after_free"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Google","cpe":[{"product":"debian_linux","vendor":"debian"},{"product":"linux_kernel","vendor":"linux"}],"cvss":{"score":7.9,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:C/C:L/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-416","name":"Use After Free"}],"description":"A use after free vulnerability exists in the ALSA PCM package in the Linux Kernel. SNDRV_CTL_IOCTL_ELEM_{READ|WRITE}32 is missing locks that can be used in a use-after-free that can result in a priviledge escalation to gain ring0 access from the system user. We recommend upgrading past commit 56b88b50565cd8b946a2d00b0c83927b7ebb055e","ecosystems":["Red Hat:rhel_e4s:8.1::baseos"],"exploits":{"exploitdb":0,"first_seen":"2024-03-10","github_poc":1,"max_poc_stars":17,"metasploit":0,"nuclei":0,"refs":[{"date":"2024-03-10T04:41:34Z","kind":"github_poc","ref":"https://github.com/SeanHeelan/claude_opus_cve_2023_0266","stars":17,"title":"Demo showing Claude Opus does not find CVE-2023-0266"}],"tier":"exploited"},"has_fix":true,"headline":"Linux Kernel Use-After-Free","id":"CVE-2023-0266","indexable":true,"kev":{"dateAdded":"2023-03-30","dueDate":"2023-04-20","knownRansomwareCampaignUse":"Unknown","product":"Kernel","requiredAction":"Apply updates per vendor instructions.","vendorProject":"Linux","vulnerabilityName":"Linux Kernel Use-After-Free Vulnerability"},"kind":"cve","links":{"ecosystem":null,"product":"debian:debian_linux","products":["debian:debian_linux","linux:linux_kernel"],"type":"use_after_free","year":"2023"},"n_packages":40,"n_references":4,"next":{"headline":"Ultimate Carousel For WPBakery Page Builder \u003c= 2.6 - Contributor+ Stored XSS","id":"CVE-2023-0267"},"packages":[{"ecosystem":"Red Hat:rhel_e4s:8.1::baseos","fixed":["0:4.18.0-147.81.1.el8_1"],"introduced":["0"],"last_affected":[],"package":"bpftool","purl":"pkg:rpm/redhat/bpftool","source":"RHSA-2023:1588"},{"ecosystem":"Red Hat:rhel_e4s:8.1::baseos","fixed":["0:4.18.0-147.81.1.el8_1"],"introduced":["0"],"last_affected":[],"package":"bpftool-debuginfo","purl":"pkg:rpm/redhat/bpftool-debuginfo","source":"RHSA-2023:1588"},{"ecosystem":"Red Hat:rhel_e4s:8.1::baseos","fixed":["0:4.18.0-147.81.1.el8_1"],"introduced":["0"],"last_affected":[],"package":"kernel","purl":"pkg:rpm/redhat/kernel","source":"RHSA-2023:1588"},{"ecosystem":"Red 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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":"CC BY 4.0","name":"Red Hat","prefix":"RHSA"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"open","licence":"CC0 1.0","name":"CISA KEV"},{"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":"no","exploitation":"active","technical_impact":"total"},"state":"PUBLISHED","updated":"2025-10-21","vendors":["Linux"]},"summary":"A use-after-free in the Linux Kernel ALSA PCM package allows local attackers to escalate privileges to ring0 access.","url":"https://insights.sbomify.com/CVE-2023-0266/"}