{"id":"CVE-2026-72226","summary":"batman-adv: tt: prevent TVLV OOB check overflow","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nbatman-adv: tt: prevent TVLV OOB check overflow\n\nA TT unicast TVLV contains the number of VLANs stored in it. This number is\nan u16 and gets multiplied by the size of the struct\nbatadv_tvlv_tt_vlan_data (8 bytes). The size can therefore overflow the u16\nused to store the tt_vlan_len. All additional safety checks to prevent\nout-of-bounds access of the TVLV buffer are invalid due to this overflow.\n\nUsing size_t prevents this overflow and ensures that the safety checks\ncompare against the actual buffer requirements.","modified":"2026-08-18T03:56:39.634236407Z","published":"2026-08-15T05:54:18.285Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72226.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/0de12a4c4847f571d82a9cd96bc633eded41d7c6"},{"type":"WEB","url":"https://git.kernel.org/stable/c/1898273c5dc8148267ef9f97cd2517a2822350e7"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3256c05d5a9db34346eaf20f52dddde984852d77"},{"type":"WEB","url":"https://git.kernel.org/stable/c/604bd5042fbcd1ab9f7cd98fd847ec017aeede8a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6222b443686525cb5a9b6a9cecf23b2e2ab23e2a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7319c0794f91be2734aac695794e7203606b49f8"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7a581d9aaba8c82bd6177fa36b2588eea77f6e2b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d6ff4764ff784ede25f5c83a6f5883a74c93a5ea"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72226.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-72226"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"7ea7b4a142758deaf46c1af0ca9ceca6dd55138b"},{"fixed":"0de12a4c4847f571d82a9cd96bc633eded41d7c6"},{"fixed":"d6ff4764ff784ede25f5c83a6f5883a74c93a5ea"},{"fixed":"1898273c5dc8148267ef9f97cd2517a2822350e7"},{"fixed":"604bd5042fbcd1ab9f7cd98fd847ec017aeede8a"},{"fixed":"7319c0794f91be2734aac695794e7203606b49f8"},{"fixed":"3256c05d5a9db34346eaf20f52dddde984852d77"},{"fixed":"6222b443686525cb5a9b6a9cecf23b2e2ab23e2a"},{"fixed":"7a581d9aaba8c82bd6177fa36b2588eea77f6e2b"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72226.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.13.0"},{"fixed":"5.10.261"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.212"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.178"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.145"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.97"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.40"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.5"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72226.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}