{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2025-40089 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2025-40089 is a vulnerability in Linux, published on 30 Oct 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-2025-40089 and fix it if it is affected.\n\nWhat it is: CVE-2025-40089 is a vulnerability in Linux, published on 30 Oct 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-2025-40089 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-2025-40089/ (Markdown: https://insights.sbomify.com/CVE-2025-40089/index.md)","id":"CVE-2025-40089","markdown":"https://insights.sbomify.com/CVE-2025-40089/index.md","name":"CVE-2025-40089","record":{"aliases":["BELL-CVE-2025-40089","DEBIAN-CVE-2025-40089","GHSA-c72w-7535-v29m","UBUNTU-CVE-2025-40089"],"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 null pointer dereference in the Linux kernel CXL feature handling allows local attackers to cause a system crash.","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\ncxl/features: Add check for no entries in cxl_feature_info\n\ncxl EDAC calls cxl_feature_info() to get the feature information and\nif the hardware has no Features support, cxlfs may be passed in as\nNULL.\n\n[   51.957498] BUG: kernel NULL pointer dereference, address: 0000000000000008\n[   51.965571] #PF: supervisor read access in kernel mode\n[   51.971559] #PF: error_code(0x0000) - not-present page\n[   51.977542] PGD 17e4f6067 P4D 0\n[   51.981384] Oops: Oops: 0000 [#1] SMP NOPTI\n[   51.986300] CPU: 49 UID: 0 PID: 3782 Comm: systemd-udevd Not tainted 6.17.0dj\ntest+ #64 PREEMPT(voluntary)\n[   51.997355] Hardware name: \u003cremoved\u003e\n[   52.009790] RIP: 0010:cxl_feature_info+0xa/0x80 [cxl_core]\n\nAdd a check for cxlfs before dereferencing it and return -EOPNOTSUPP if\nthere is no cxlfs created due to no hardware support.","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":"cxl/features: Add check for no entries in cxl_feature_info","id":"CVE-2025-40089","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"null_dereference","year":"2025"},"n_packages":0,"n_references":2,"next":{"headline":"ksmbd: fix recursive locking in RPC handle list access","id":"CVE-2025-40090"},"packages":[],"prev":{"headline":"hfsplus: fix slab-out-of-bounds read in hfsplus_strcasecmp()","id":"CVE-2025-40088"},"products":["Linux"],"published":"2025-10-30","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 null pointer dereference in the Linux kernel CXL feature handling allows local attackers to cause a system crash.","url":"https://insights.sbomify.com/CVE-2025-40089/"}