{"id":"CVE-2026-74565","title":"kernel: netfilter: nf_tables: make nft_object rhltable per table (CVE-2026-74565)","summary":"A flaw was found in the Linux kernel's netfilter subsystem. The global nature of the `nft_object rhltable` allows a local attacker to access objects that are being deallocated by other network namespaces. This can lead to a use-after-free …","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cvssSource":"vendor","cwe":"CWE-416","vendor":"Red Hat","product":"Red Hat Enterprise Linux 9","affected":["enterprise_linux 10","enterprise_linux 8","enterprise_linux 9"],"published":"2026-08-15","updated":"2026-10-26","sourceUpdated":"2026-10-26T05:11:24+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-74565.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-74565.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-74565"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2517088"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-74565"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74565"},{"url":"https://kernelcve.org/list/?q=CVE-2026-74565"},{"url":"https://lore.kernel.org/linux-cve-announce/2026081553-CVE-2026-74565-74d6@gregkh/T"},{"url":"https://git.kernel.org/stable/c/4b549d32d34ee765527e63726bb1af984876e776"},{"url":"https://git.kernel.org/stable/c/523c881661dde67efb44fce38c8eed50a72a57c1"},{"url":"https://git.kernel.org/stable/c/71714a2cec6c6d79bbd425ad968f9d6a3e4a2066"},{"url":"https://git.kernel.org/stable/c/1948e4f85b855618b5b9a27265f98d816f4cb7cb"},{"url":"https://git.kernel.org/stable/c/63ba12b664a2cd3220ed43e22c717715f4cc2ae8"},{"url":"https://git.kernel.org/stable/c/7d4789b58761d9d48d9b5f5e7e0a510c3bbfb3af"},{"url":"https://git.kernel.org/stable/c/f4f699790590bd0896c48a71e9232a65198f92f0"}],"tags":["csaf","vex","red-hat","cve.org","score-dispute"],"epss":0.00123,"epssPercentile":0.02064,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-16T19:00:18.619077Z"},"scores":{"vendor":5.5,"cna":7.8},"ingestedAt":"2026-09-14T15:23:07.456Z","slug":"CVE-2026-74565","body":"## Overview\n\nA flaw was found in the Linux kernel's netfilter subsystem. The global nature of the `nft_object rhltable` allows a local attacker to access objects that are being deallocated by other network namespaces. This can lead to a use-after-free vulnerability, potentially resulting in memory corruption or denial of service.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9 · updated 2026-10-26 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-74565.json)\n\n**kernel: netfilter: nf_tables: make nft_object rhltable per table** — rated Moderate by Red Hat. Released 2026-08-15, updated 2026-10-26.\n\nAffected:\n\n- Red Hat Enterprise Linux 10\n- Red Hat Enterprise Linux 8\n- Red Hat Enterprise Linux 9\n\nNo fix planned:\n\n- Red Hat Enterprise Linux 10\n- Red Hat Enterprise Linux 8\n- Red Hat Enterprise Linux 9\n\nNot affected:\n\n- Red Hat Enterprise Linux 6\n- Red Hat Enterprise Linux 7\n\n## Remediation\n\nFix deferred\n\nWorkarounds / mitigations:\n\n- Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":229410,"id":"CVE-2026-74565","ts":1793019747068,"field":"cvss","old":"7.8","new":"5.5"},{"seq":229409,"id":"CVE-2026-74565","ts":1793019747068,"field":"severity","old":"high","new":"medium"}]}