{"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":"2026-10-15","sourceUpdated":"2026-10-15T11:17:58.153","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/486dbe7efec2be19cd3625be282f7f6b34a3f2c5","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"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-90146.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-90146"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2536675"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-90146"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90146"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-90146.mbox"},{"url":"https://kernelcve.org/list/?q=CVE-2026-90146"},{"url":"https://git.kernel.org/stable/c/bd06033625ec20b7bdec43d21f776fc1a5e9000e"},{"url":"https://git.kernel.org/stable/c/f14b774ec9bd52d0f4ec29a6597a35fd107197f9"}],"tags":["nvd","cve.org","csaf","vex","red-hat","score-dispute"],"epss":0.00169,"epssPercentile":0.06263,"ingestedAt":"2026-09-17T16:21:47.876Z","cwe":["CWE-20"],"scores":{"nvd":7.8,"vendor":5.5,"cna":7.8},"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.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, … · updated 2026-10-21 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-90146.json)","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"}]}