{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2025-68186 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2025-68186 is a denial of service vulnerability in Linux, published on 16 Dec 2025. 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-2025-68186 and fix it if it is affected.\n\nWhat it is: CVE-2025-68186 is a denial of service vulnerability in Linux, published on 16 Dec 2025. 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-2025-68186 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-2025-68186/ (Markdown: https://insights.sbomify.com/CVE-2025-68186/index.md)","id":"CVE-2025-68186","markdown":"https://insights.sbomify.com/CVE-2025-68186/index.md","name":"CVE-2025-68186","record":{"aliases":["BELL-CVE-2025-68186","DEBIAN-CVE-2025-68186","GHSA-fmq6-3hwm-4q94","UBUNTU-CVE-2025-68186"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel","requires_auth":"none","summary":"A logic error in the Linux kernel ring buffer triggers unnecessary warnings when the reader catches up, potentially causing system instability or denial of service.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nring-buffer: Do not warn in ring_buffer_map_get_reader() when reader catches up\n\nThe function ring_buffer_map_get_reader() is a bit more strict than the\nother get reader functions, and except for certain situations the\nrb_get_reader_page() should not return NULL. If it does, it triggers a\nwarning.\n\nThis warning was triggering but after looking at why, it was because\nanother acceptable situation was happening and it wasn't checked for.\n\nIf the reader catches up to the writer and there's still data to be read\non the reader page, then the rb_get_reader_page() will return NULL as\nthere's no new page to get.\n\nIn this situation, the reader page should not be updated and no warning\nshould trigger.","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":"ring-buffer: Do not warn in ring_buffer_map_get_reader() when reader catches up","id":"CVE-2025-68186","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2025"},"n_packages":0,"n_references":3,"next":{"headline":"net: mdio: Check regmap pointer returned by device_node_to_regmap()","id":"CVE-2025-68187"},"packages":[],"prev":{"headline":"nfs4_setup_readdir(): insufficient locking for -\u003ed_parent-\u003ed_inode dereferencing","id":"CVE-2025-68185"},"products":["Linux"],"published":"2025-12-16","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-05-11","vendors":["Linux"]},"summary":"A logic error in the Linux kernel ring buffer triggers unnecessary warnings when the reader catches up, potentially causing system instability or denial of service.","url":"https://insights.sbomify.com/CVE-2025-68186/"}