{"id":"CVE-2026-90146","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf, xdp: move offload check into dev_xdp_install()\n\nbpf_xdp_link_update() calls dev_xdp_install() directly and skips\ndev_xdp_attach(), so the checks in dev_xdp_attach(…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf, xdp: move offload check into dev_xdp_install()\n\nbpf_xdp_link_update() calls dev_xdp_install() directly and skips\ndev_xdp_attach(), so the checks in dev_xdp_attach(…","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","vendor":"Linux","product":"Linux","affected":["Linux >= 026a4c28e1db3b0cb99cd9a3e495d4a8b632fa74 < ea7b35dcc9430293b861bc7bad0c546f193c85f9","Linux >= 026a4c28e1db3b0cb99cd9a3e495d4a8b632fa74 < 03022dd874070768a7099f18b1944c633641315f","Linux >= 026a4c28e1db3b0cb99cd9a3e495d4a8b632fa74 < ad27ed7d2309419a129078d781504f486b1b469a","Linux 5.9"],"published":"2026-09-17","updated":"2026-09-18","sourceUpdated":"2026-09-18T18:17:43.987","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-90146","references":[{"url":"https://git.kernel.org/stable/c/03022dd874070768a7099f18b1944c633641315f","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/ad27ed7d2309419a129078d781504f486b1b469a","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/ea7b35dcc9430293b861bc7bad0c546f193c85f9","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"epss":0.00161,"epssPercentile":0.05765,"ingestedAt":"2026-09-17T16:21:47.876Z","slug":"CVE-2026-90146","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nbpf, xdp: move offload check into dev_xdp_install()\n\nbpf_xdp_link_update() calls dev_xdp_install() directly and skips\ndev_xdp_attach(), so the checks in dev_xdp_attach() do not run. A user can\nmake an XDP link with a normal program and then swap in an offloaded or\ndevice-bound program with BPF_LINK_UPDATE, which puts it on the software\npath.\n\ndev_xdp_install() is the one place all three paths go through:\n\"ip link set xdp\" and BPF_LINK_CREATE reach it via dev_xdp_attach(), and\nBPF_LINK_UPDATE calls it directly. So move the program checks (offloaded,\nbound to another device, device-bound in generic mode, native vs generic,\nDEVMAP and CPUMAP) there, and keep only the netlink-flag check\n(XDP_FLAGS_UPDATE_IF_NOEXIST) in dev_xdp_attach().\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":207147,"id":"CVE-2026-90146","ts":1789757335959,"field":"cvss","old":null,"new":"7.8"},{"seq":207146,"id":"CVE-2026-90146","ts":1789757335959,"field":"severity","old":"none","new":"high"}]}