{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-72186 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-72186 is a critical denial of service vulnerability in Linux, published on 15 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-72186 and fix it if it is affected.\n\nWhat it is: CVE-2026-72186 is a critical denial of service vulnerability in Linux, published on 15 Aug 2026. 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-2026-72186 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-2026-72186/ (Markdown: https://insights.sbomify.com/CVE-2026-72186/index.md)","id":"CVE-2026-72186","markdown":"https://insights.sbomify.com/CVE-2026-72186/index.md","name":"CVE-2026-72186","record":{"aliases":["DEBIAN-CVE-2026-72186","GHSA-cpf7-qp55-xqgv","UBUNTU-CVE-2026-72186"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service","data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"Linux kernel","requires_auth":"none","summary":"A local attacker can corrupt NTFS volumes and cause system deadlocks by writing to protected system files, requiring a kernel patch.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[],"cvss":{"score":9.1,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","version":"3.1"},"cwes":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nntfs: make system files immutable to prevent corruption\n\nWhen a system file such as $Bitmap is exposed via show_sys_files and\nwritten from userspace, the volume is corrupted and, because the cluster\nallocator scans $Bitmap through the same inode's page cache, a write to\n$Bitmap also deadlocks writeback against the folio it already holds locked.\n\nThese files are maintained by the driver itself and have no valid reason\nto be written through the file interface. Mark base metadata files\n(mft_no \u003c FILE_first_user) as immutable during inode read so the VFS\nrejects write, mmap, truncate and unlink with -EPERM. Directories are\nskipped so the root and $Extend remain usable. Internal metadata updates\ndo not go through the VFS write path and are unaffected.","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":"ntfs: make system files immutable to prevent corruption","id":"CVE-2026-72186","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"ntfs: avoid self-deadlock during inode eviction","id":"CVE-2026-72187"},"packages":[],"prev":{"headline":"ntfs: fix WARN_ON for resident attribute in ntfs_map_runlist_nolock()","id":"CVE-2026-72185"},"products":["Linux"],"published":"2026-08-15","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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-08-17","vendors":["Linux"]},"summary":"A local attacker can corrupt NTFS volumes and cause system deadlocks by writing to protected system files, requiring a kernel patch.","url":"https://insights.sbomify.com/CVE-2026-72186/"}