{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-80959 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-80959 is a high-severity path traversal vulnerability in Linux, published on 11 Sep 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-2026-80959 and fix it if it is affected.\n\nWhat it is: CVE-2026-80959 is a high-severity path traversal vulnerability in Linux, published on 11 Sep 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-2026-80959 in the wild and no public exploit code.\n\nAffected product: 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-2026-80959/ (Markdown: https://insights.sbomify.com/CVE-2026-80959/index.md)","id":"CVE-2026-80959","markdown":"https://insights.sbomify.com/CVE-2026-80959/index.md","name":"CVE-2026-80959","record":{"aliases":["BELL-CVE-2026-80959","DEBIAN-CVE-2026-80959","GHSA-9gr7-7h3r-cj7p","UBUNTU-CVE-2026-80959"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["data_read"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel dm-pcache","requires_auth":"low_privilege","summary":"A local attacker with CAP_SYS_ADMIN can read past segment boundaries in the Linux kernel dm-pcache driver by manipulating persisted offsets.","user_interaction":"not_required","vuln_class":"path_traversal"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","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":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndm-pcache: bound the persisted tail-position offset\n\ncache_pos_decode() takes the persisted key_tail and dirty_tail seg_off from\nthe cache device and addresses within the segment with it. A seg_off at or\npast the segment data_size, controllable by whoever supplies the device\n(CAP_SYS_ADMIN), reads past the segment data.\n\nReject a decoded seg_off that is not below the segment data_size.","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":"dm-pcache: bound the persisted tail-position offset","id":"CVE-2026-80959","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"path_traversal","year":"2026"},"n_packages":0,"n_references":3,"next":{"headline":"dm-pcache: validate on-media seg_num against the cache device size","id":"CVE-2026-80960"},"packages":[],"prev":{"headline":"dm-pcache: clamp the tail kset read to the segment data region","id":"CVE-2026-80958"},"products":["Linux"],"published":"2026-09-11","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-10-19","vendors":["Linux"]},"summary":"A local attacker with CAP_SYS_ADMIN can read past segment boundaries in the Linux kernel dm-pcache driver by manipulating persisted offsets.","url":"https://insights.sbomify.com/CVE-2026-80959/"}