{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-64597 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-64597 is a critical use after free vulnerability in Linux, published on 6 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-2026-64597 and fix it if it is affected.\n\nWhat it is: CVE-2026-64597 is a critical use after free vulnerability in Linux, published on 6 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-2026-64597 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-2026-64597/ (Markdown: https://insights.sbomify.com/CVE-2026-64597/index.md)","id":"CVE-2026-64597","markdown":"https://insights.sbomify.com/CVE-2026-64597/index.md","name":"CVE-2026-64597","record":{"aliases":["BELL-CVE-2026-64597","DEBIAN-CVE-2026-64597","GHSA-4vgx-hp6g-jmm8","UBUNTU-CVE-2026-64597"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["code_execution","denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Linux kernel SMB client","requires_auth":"none","summary":"A double-free vulnerability in the Linux kernel SMB client allows attackers to cause denial of service or potentially execute code via crafted SMB2 close operations.","user_interaction":"not_required","vuln_class":"use_after_free"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[],"cvss":{"score":9.8,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-415","name":"Double Free"}],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: fix double-free in SMB2_close() replay\n\nA response-bearing attempt can return a replayable error and free its\nresponse buffer. If SMB2_close_init() fails before the next send, cleanup\nretains the previous buffer type and frees that response again.\n\nReset response bookkeeping before each attempt to prevent the stale free.","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":"smb: client: fix double-free in SMB2_close() replay","id":"CVE-2026-64597","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"use_after_free","year":"2026"},"n_packages":0,"n_references":5,"next":{"headline":"smb/client: Fix error code in smb2_aead_req_alloc()","id":"CVE-2026-64598"},"packages":[],"prev":{"headline":"libfs: set SB_I_NOEXEC and SB_I_NODEV by default in init_pseudo()","id":"CVE-2026-64596"},"products":["Linux"],"published":"2026-08-06","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-10-19","vendors":["Linux"]},"summary":"A double-free vulnerability in the Linux kernel SMB client allows attackers to cause denial of service or potentially execute code via crafted SMB2 close operations.","url":"https://insights.sbomify.com/CVE-2026-64597/"}