{"id":"CVE-2026-72232","title":"batman-adv: ensure minimal ethernet header on TX","summary":"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 pos…","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","cvssSource":"cna","vendor":"Linux","product":"Linux","affected":["Linux >= c6c8fea29769d998d94fcec9b9f14d4b52b349d3 < 58799078afebd5115e052bf69ad6697f9759dd6f","Linux >= c6c8fea29769d998d94fcec9b9f14d4b52b349d3 < 38cd10b0aeec755d89f78722a2b83f4088ff0cb0","Linux >= c6c8fea29769d998d94fcec9b9f14d4b52b349d3 < 811fea37620f2097955d95ce81cfdba03fd30f1b","Linux >= c6c8fea29769d998d94fcec9b9f14d4b52b349d3 < e6640923afee619d9fa82b07394dc9498e202304","Linux >= c6c8fea29769d998d94fcec9b9f14d4b52b349d3 < 6b4f521e01257387906f8b969ad3450d8208d4e2","Linux >= c6c8fea29769d998d94fcec9b9f14d4b52b349d3 < 9e16b6751a8206de0b865d99bb02771e6751d12d","Linux >= c6c8fea29769d998d94fcec9b9f14d4b52b349d3 < dbeb4145d9778f922f459935da9a027750765a69","Linux >= c6c8fea29769d998d94fcec9b9f14d4b52b349d3 < 49df66b7993c80b80c7eb9a84ba5b3410c8296a0","Linux 2.6.38"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-16T18:44:26.055305Z"},"published":"2026-08-15","updated":"2026-10-16","sourceUpdated":"2026-10-16T18:45:03.394Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-72232","references":[{"url":"https://git.kernel.org/stable/c/58799078afebd5115e052bf69ad6697f9759dd6f"},{"url":"https://git.kernel.org/stable/c/38cd10b0aeec755d89f78722a2b83f4088ff0cb0"},{"url":"https://git.kernel.org/stable/c/811fea37620f2097955d95ce81cfdba03fd30f1b"},{"url":"https://git.kernel.org/stable/c/e6640923afee619d9fa82b07394dc9498e202304"},{"url":"https://git.kernel.org/stable/c/6b4f521e01257387906f8b969ad3450d8208d4e2"},{"url":"https://git.kernel.org/stable/c/9e16b6751a8206de0b865d99bb02771e6751d12d"},{"url":"https://git.kernel.org/stable/c/dbeb4145d9778f922f459935da9a027750765a69"},{"url":"https://git.kernel.org/stable/c/49df66b7993c80b80c7eb9a84ba5b3410c8296a0"}],"tags":["cve.org"],"epss":0.00156,"epssPercentile":0.04289,"ingestedAt":"2026-10-16T19:46:24.420Z","slug":"CVE-2026-72232","body":"## Overview\n\nIn 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.\n\n## Affected\n\n- `Linux >= c6c8fea29769d998d94fcec9b9f14d4b52b349d3 < 58799078afebd5115e052bf69ad6697f9759dd6f`\n- `Linux >= c6c8fea29769d998d94fcec9b9f14d4b52b349d3 < 38cd10b0aeec755d89f78722a2b83f4088ff0cb0`\n- `Linux >= c6c8fea29769d998d94fcec9b9f14d4b52b349d3 < 811fea37620f2097955d95ce81cfdba03fd30f1b`\n- `Linux >= c6c8fea29769d998d94fcec9b9f14d4b52b349d3 < e6640923afee619d9fa82b07394dc9498e202304`\n- `Linux >= c6c8fea29769d998d94fcec9b9f14d4b52b349d3 < 6b4f521e01257387906f8b969ad3450d8208d4e2`\n- `Linux >= c6c8fea29769d998d94fcec9b9f14d4b52b349d3 < 9e16b6751a8206de0b865d99bb02771e6751d12d`\n- `Linux >= c6c8fea29769d998d94fcec9b9f14d4b52b349d3 < dbeb4145d9778f922f459935da9a027750765a69`\n- `Linux >= c6c8fea29769d998d94fcec9b9f14d4b52b349d3 < 49df66b7993c80b80c7eb9a84ba5b3410c8296a0`\n- `Linux 2.6.38`\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":[]}