CVE-2026-90146
- Source
- https://cve.org/CVERecord?id=CVE-2026-90146
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90146.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-90146
- Downstream
- Published
- 2026-09-17T16:06:41Z
- Modified
- 2026-09-19T03:47:30Z
- Severity
-
- 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- bpf, xdp: move offload check into dev_xdp_install()
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
bpf, xdp: move offload check into dev_xdp_install()
bpf_xdp_link_update() calls dev_xdp_install() directly and skips dev_xdp_attach(), so the checks in dev_xdp_attach() do not run. A user can make an XDP link with a normal program and then swap in an offloaded or device-bound program with BPF_LINK_UPDATE, which puts it on the software path.
dev_xdp_install() is the one place all three paths go through: "ip link set xdp" and BPF_LINK_CREATE reach it via dev_xdp_attach(), and BPF_LINK_UPDATE calls it directly. So move the program checks (offloaded, bound to another device, device-bound in generic mode, native vs generic, DEVMAP and CPUMAP) there, and keep only the netlink-flag check (XDP_FLAGS_UPDATE_IF_NOEXIST) in dev_xdp_attach().
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90146.json" }- References
-
- https://git.kernel.org/stable/c/03022dd874070768a7099f18b1944c633641315f
- https://git.kernel.org/stable/c/ad27ed7d2309419a129078d781504f486b1b469a
- https://git.kernel.org/stable/c/ea7b35dcc9430293b861bc7bad0c546f193c85f9
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90146.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-90146
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git