{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-23040 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-23040 is a vulnerability in Linux, published on 4 Feb 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-2026-23040 and fix it if it is affected.\n\nWhat it is: CVE-2026-23040 is a vulnerability in Linux, published on 4 Feb 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-2026-23040 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-2026-23040/ (Markdown: https://insights.sbomify.com/CVE-2026-23040/index.md)","id":"CVE-2026-23040","markdown":"https://insights.sbomify.com/CVE-2026-23040/index.md","name":"CVE-2026-23040","record":{"aliases":["BELL-CVE-2026-23040","DEBIAN-CVE-2026-23040","GHSA-4mqx-ggc6-9qj3","UBUNTU-CVE-2026-23040"],"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 typo in the Linux kernel's mac80211_hwsim module causes a NULL pointer dereference, leading to a denial of service.","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\nwifi: mac80211_hwsim: fix typo in frequency notification\n\nThe NAN notification is for 5745 MHz which corresponds to channel 149\nand not 5475 which is not actually a valid channel. This could result in\na NULL pointer dereference in cfg80211_next_nan_dw_notif.","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":"wifi: mac80211_hwsim: fix typo in frequency notification","id":"CVE-2026-23040","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"null_dereference","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"bnxt_en: Fix NULL pointer crash in bnxt_ptp_enable during error cleanup","id":"CVE-2026-23041"},"packages":[],"prev":{"headline":"drm/gud: fix NULL fb and crtc dereferences on USB disconnect","id":"CVE-2026-23039"},"products":["Linux"],"published":"2026-02-04","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 typo in the Linux kernel's mac80211_hwsim module causes a NULL pointer dereference, leading to a denial of service.","url":"https://insights.sbomify.com/CVE-2026-23040/"}