{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2025-40076 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2025-40076 is a vulnerability in Linux, published on 28 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-2025-40076 and fix it if it is affected.\n\nWhat it is: CVE-2025-40076 is a vulnerability in Linux, published on 28 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-2025-40076 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-2025-40076/ (Markdown: https://insights.sbomify.com/CVE-2025-40076/index.md)","id":"CVE-2025-40076","markdown":"https://insights.sbomify.com/CVE-2025-40076/index.md","name":"CVE-2025-40076","record":{"aliases":["BELL-CVE-2025-40076","GHSA-6gg9-hc2m-2hw4","UBUNTU-CVE-2025-40076"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel driver","requires_auth":"none","summary":"A null pointer dereference in the Linux kernel PCI rcar-host driver causes a system crash when handling MSI interrupts.","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\nPCI: rcar-host: Pass proper IRQ domain to generic_handle_domain_irq()\n\nStarting with commit dd26c1a23fd5 (\"PCI: rcar-host: Switch to\nmsi_create_parent_irq_domain()\"), the MSI parent IRQ domain is NULL because\nthe object of type struct irq_domain_info passed to:\n\nmsi_create_parent_irq_domain() -\u003e\n  irq_domain_instantiate()() -\u003e\n    __irq_domain_instantiate()\n\nhas no reference to the parent IRQ domain. Using msi-\u003edomain-\u003eparent as an\nargument for generic_handle_domain_irq() leads to below error:\n\n\t\"Unable to handle kernel NULL pointer dereference at virtual address\"\n\nThis error was identified while switching the upcoming RZ/G3S PCIe host\ncontroller driver to msi_create_parent_irq_domain() (which was using a\nsimilar pattern to handle MSIs (see link section)), but it was not tested\non hardware using the pcie-rcar-host controller driver due to lack of\nhardware.\n\n[mani: reworded subject and description]","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":"PCI: rcar-host: Pass proper IRQ domain to generic_handle_domain_irq()","id":"CVE-2025-40076","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":"f2fs: fix to avoid overflow while left shift operation","id":"CVE-2025-40077"},"packages":[],"prev":{"headline":"tcp_metrics: use dst_dev_net_rcu()","id":"CVE-2025-40075"},"products":["Linux"],"published":"2025-10-28","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 PCI rcar-host driver causes a system crash when handling MSI interrupts.","url":"https://insights.sbomify.com/CVE-2025-40076/"}