{"id":"CVE-2026-72232","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-72232","summary":"batman-adv: ensure minimal ethernet header on TX","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nbatman-adv: ensure minimal ethernet header on TX\n\nAs documented in commit 8bd67ebb50c0 (\"net: bridge: xmit: make sure we have\nat least eth header len bytes\"), it is possible by for a local user with\neBPF TC hook access to attach a tc filter which truncates the packet and\nredirects to an batadv interface. But the code assumes that at least\nETH_HLEN bytes are available and thus might read outside of the available\nbuffer.\n\nThe batadv_interface_tx() must therefore always check itself if enough data\nis available for the ethernet header and don't rely on min_header_len.","published":"2026-08-15T05:54:22.864Z","modified":"2026-08-18T03:56:39.400395625Z","cvss":{"score":7.8,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Linux","name":"Kernel","fixedVersion":"5.10.261"}],"fix":null,"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/38cd10b0aeec755d89f78722a2b83f4088ff0cb0"},{"type":"WEB","url":"https://git.kernel.org/stable/c/49df66b7993c80b80c7eb9a84ba5b3410c8296a0"},{"type":"WEB","url":"https://git.kernel.org/stable/c/58799078afebd5115e052bf69ad6697f9759dd6f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6b4f521e01257387906f8b969ad3450d8208d4e2"},{"type":"WEB","url":"https://git.kernel.org/stable/c/811fea37620f2097955d95ce81cfdba03fd30f1b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9e16b6751a8206de0b865d99bb02771e6751d12d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/dbeb4145d9778f922f459935da9a027750765a69"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e6640923afee619d9fa82b07394dc9498e202304"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72232.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-72232"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-18T03:56:39.400395625Z"}}