{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2025-40099 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2025-40099 is a critical memory corruption vulnerability in Linux, published on 30 Oct 2025. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2025-40099 and fix it if it is affected.\n\nWhat it is: CVE-2025-40099 is a critical memory corruption vulnerability in Linux, published on 30 Oct 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2025-40099 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-2025-40099/ (Markdown: https://insights.sbomify.com/CVE-2025-40099/index.md)","id":"CVE-2025-40099","markdown":"https://insights.sbomify.com/CVE-2025-40099/index.md","name":"CVE-2025-40099","record":{"aliases":["AZL-69436","BELL-CVE-2025-40099","DEBIAN-CVE-2025-40099","GHSA-58x9-22gw-84q7","ROOT-OS-DEBIAN-11-CVE-2025-40099","ROOT-OS-DEBIAN-13-CVE-2025-40099","ROOT-OS-UBUNTU-2204-CVE-2025-40099","ROOT-OS-UBUNTU-2404-CVE-2025-40099","UBUNTU-CVE-2025-40099"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service","code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Linux kernel CIFS","requires_auth":"none","summary":"A malicious SMB server can trigger an out-of-bounds memory access in the Linux kernel CIFS module via malformed DFS referral replies, potentially causing crashes or code execution.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[],"cvss":{"score":9.4,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H","version":"3.1"},"cwes":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\ncifs: parse_dfs_referrals: prevent oob on malformed input\n\nMalicious SMB server can send invalid reply to FSCTL_DFS_GET_REFERRALS\n\n- reply smaller than sizeof(struct get_dfs_referral_rsp)\n- reply with number of referrals smaller than NumberOfReferrals in the\nheader\n\nProcessing of such replies will cause oob.\n\nReturn -EINVAL error on such replies to prevent oob-s.","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":"cifs: parse_dfs_referrals: prevent oob on malformed input","id":"CVE-2025-40099","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2025"},"n_packages":0,"n_references":5,"next":{"headline":"btrfs: do not assert we found block group item when creating free space tree","id":"CVE-2025-40100"},"packages":[],"prev":{"headline":"ALSA: hda: cs35l41: Fix NULL pointer dereference in cs35l41_get_acpi_mute_state()","id":"CVE-2025-40098"},"products":["Linux"],"published":"2025-10-30","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-10-15","vendors":["Linux"]},"summary":"A malicious SMB server can trigger an out-of-bounds memory access in the Linux kernel CIFS module via malformed DFS referral replies, potentially causing crashes or code execution.","url":"https://insights.sbomify.com/CVE-2025-40099/"}