{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-98854 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-98854 is a vulnerability in Linux, published on 18 Oct 2026."},"fix_prompt":"Check this codebase for CVE-2026-98854 and fix it if it is affected.\n\nWhat it is: CVE-2026-98854 is a vulnerability in Linux, published on 18 Oct 2026. \nExploitation: There is no known exploitation of CVE-2026-98854 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-2026-98854/ (Markdown: https://insights.sbomify.com/CVE-2026-98854/index.md)","id":"CVE-2026-98854","markdown":"https://insights.sbomify.com/CVE-2026-98854/index.md","name":"CVE-2026-98854","record":{"aliases":["AZL-109332","BELL-CVE-2026-98854","DEBIAN-CVE-2026-98854","GHSA-x4qh-8j3r-qp8v","UBUNTU-CVE-2026-98854"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"unknown","non_default_config":false,"product_category":"Linux kernel","requires_auth":"none","summary":"A null pointer dereference in the Linux kernel's device tree overlay code can cause a system crash when an ID allocation fails.","user_interaction":"not_required","vuln_class":"null_dereference"},"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\nof/overlay: only treat a positive changeset id as registered\n\nof_overlay_fdt_apply() stores the idr_alloc() return value in\novcs-\u003eid before checking it. On failure the stored id is negative,\nfree_overlay_changeset()'s \"if (ovcs-\u003eid)\" check passes, idr_remove()\nis called with a negative id and list_del() runs on ovcs-\u003eovcs_list,\nwhich is not initialized until after the id allocation. An allocation\nfailure at that point dereferences NULL.\n\nMake free_overlay_changeset() treat only a strict-positive id as\nregistered. The rest of the function already copes with a\npartially-initialized ovcs, so the error path stays a plain\ngoto err_free_ovcs.","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":"of/overlay: only treat a positive changeset id as registered","id":"CVE-2026-98854","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"null_dereference","year":"2026"},"n_packages":0,"n_references":5,"next":{"headline":"of/overlay: put property on deadprops only after changeset add succeeds","id":"CVE-2026-98855"},"packages":[],"prev":{"headline":"net: gso: limit recursive IP-in-IP segmentation","id":"CVE-2026-98853"},"products":["Linux"],"published":"2026-10-18","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":"2026-10-21","vendors":["Linux"]},"summary":"A null pointer dereference in the Linux kernel's device tree overlay code can cause a system crash when an ID allocation fails.","url":"https://insights.sbomify.com/CVE-2026-98854/"}