{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-64079 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-64079 is a medium-severity vulnerability in Linux kernel, published on 19 Jul 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-2026-64079 and fix it if it is affected.\n\nWhat it is: CVE-2026-64079 is a medium-severity vulnerability in Linux kernel, published on 19 Jul 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-2026-64079 in the wild and no public exploit code.\n\nAffected product: Linux kernel. 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-2026-64079/ (Markdown: https://insights.sbomify.com/CVE-2026-64079/index.md)","id":"CVE-2026-64079","markdown":"https://insights.sbomify.com/CVE-2026-64079/index.md","name":"CVE-2026-64079","record":{"aliases":["AZL-92724","BELL-CVE-2026-64079","DEBIAN-CVE-2026-64079","GHSA-vgxq-4vm2-qmp7","ROOT-OS-DEBIAN-12-CVE-2026-64079","ROOT-OS-UBUNTU-2204-CVE-2026-64079","UBUNTU-CVE-2026-64079"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel netfilter","requires_auth":"low_privilege","summary":"A race condition in Linux kernel netfilter allows a NULL pointer dereference during network namespace cleanup, causing a system crash.","user_interaction":"not_required","vuln_class":"null_dereference"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[{"product":"linux_kernel","vendor":"linux"}],"cvss":{"score":5.5,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-476","name":"NULL Pointer Dereference"}],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: x_tables: allocate hook ops while under mutex\n\narp/ip(6)t_register_table() add the table to the per-netns list via\nxt_register_table() before allocating the per-netns hook ops copy\nvia kmemdup_array().  This leaves a window where the table is\nvisible in the list with ops=NULL.\n\nIf the pernet exit happens runs concurrently the pre_exit callback finds\nthe table via xt_find_table() and passes the NULL ops pointer to\nnf_unregister_net_hooks(), causing a NULL dereference:\n\n  general protection fault in nf_unregister_net_hooks+0xbc/0x150\n  RIP: nf_unregister_net_hooks (net/netfilter/core.c:613)\n  Call Trace:\n    ipt_unregister_table_pre_exit\n    iptable_mangle_net_pre_exit\n    ops_pre_exit_list\n    cleanup_net\n\nFix by moving the ops allocation into the xtables core so the table is\nnever in the list without valid ops.  Also ensure the table is no longer\nprocessing packets before its torn down on error unwind.\nnf_register_net_hooks might have published at least one hook; call\nsynchronize_rcu() if there was an error.\n\naudit log register message gets deferred until all operations have\npassed, this avoids need to emit another ureg message in case of\nerror unwinding.\n\nBased on earlier patch by Tristan Madani.","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":"netfilter: x_tables: allocate hook ops while under mutex","id":"CVE-2026-64079","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"null_dereference","year":"2026"},"n_packages":0,"n_references":5,"next":{"headline":"firmware: arm_ffa: Snapshot notifier callbacks under lock","id":"CVE-2026-64080"},"packages":[],"prev":{"headline":"netfilter: x_tables: add and use xtables_unregister_table_exit","id":"CVE-2026-64078"},"products":["Linux"],"published":"2026-07-19","related":[{"cvss_score":8.8,"headline":"Linux Kernel Out-of-Bounds Write","id":"CVE-2026-53266","kev_date_added":"2026-09-18","published":"2026-06-25"},{"cvss_score":8.8,"headline":"Linux Kernel Improper Input Validation","id":"CVE-2013-6282","kev_date_added":"2022-09-15","published":"2013-11-19"},{"cvss_score":8.4,"headline":"Linux Kernel Heap-Based Buffer Overflow","id":"CVE-2022-0185","kev_date_added":"2024-08-21","published":"2022-02-11"},{"cvss_score":8.4,"headline":"Linux Kernel Privilege Escalation","id":"CVE-2013-2094","kev_date_added":"2022-09-15","published":"2013-05-14"},{"cvss_score":7.8,"headline":"Linux Kernel Unspecified","id":"CVE-2026-53362","kev_date_added":"2026-08-27","published":"2026-07-04"},{"cvss_score":7.8,"headline":"Linux Kernel Missing Initialization of a Variable","id":"CVE-2026-46300","kev_date_added":"2026-10-28","published":"2026-05-23"},{"cvss_score":7.8,"headline":"Linux Kernel Race Condition","id":"CVE-2025-39964","kev_date_added":"2026-09-18","published":"2025-10-13"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-10-21","vendors":["Linux"]},"summary":"A race condition in Linux kernel netfilter allows a NULL pointer dereference during network namespace cleanup, causing a system crash.","url":"https://insights.sbomify.com/CVE-2026-64079/"}