{"id":"CVE-2026-89949","summary":"batman-adv: dat: avoid unaligned fault in IP extraction","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nbatman-adv: dat: avoid unaligned fault in IP extraction\n\nIndependent of the alignment of the ARP packet in the SKB, either the\nbatadv_arp_ip_src or the batadv_arp_ip_dst will have an unaligned access\n(on HW without native unaligned read support).\n\nUse get_unaligned() to handle this properly on all architectures.","modified":"2026-09-18T03:48:34.332320833Z","published":"2026-09-16T10:32:34.794Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89949.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/0121afa52cdb88cfb4d5d7bd126a23a9100121d8"},{"type":"WEB","url":"https://git.kernel.org/stable/c/0c2df865338bbf92aa45b9253e5f9b8ef2d9992f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/15dbfb37f0e1a085d48deeb8f5238e9d28127dde"},{"type":"WEB","url":"https://git.kernel.org/stable/c/1cfa7d5f70d54cb8c7e82df739430782d1996ee1"},{"type":"WEB","url":"https://git.kernel.org/stable/c/91c99b4e152023c7d458a5dedd52d2b0d7df4ce3"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a170d4617e8cca05a1314de61728a262ef272782"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b1bbc694ca51adb8dbed3f3235b4fcbdb44e0e20"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c74a4acf41d19f21199dec2d6c813c90d31cd02c"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89949.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89949"},{"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":"5c3a0e5535933349a5d6e6bc8b704e0611f21d3f"},{"fixed":"b1bbc694ca51adb8dbed3f3235b4fcbdb44e0e20"},{"fixed":"15dbfb37f0e1a085d48deeb8f5238e9d28127dde"},{"fixed":"a170d4617e8cca05a1314de61728a262ef272782"},{"fixed":"c74a4acf41d19f21199dec2d6c813c90d31cd02c"},{"fixed":"91c99b4e152023c7d458a5dedd52d2b0d7df4ce3"},{"fixed":"1cfa7d5f70d54cb8c7e82df739430782d1996ee1"},{"fixed":"0c2df865338bbf92aa45b9253e5f9b8ef2d9992f"},{"fixed":"0121afa52cdb88cfb4d5d7bd126a23a9100121d8"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89949.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.8.0"},{"fixed":"5.10.270"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.221"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.188"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.157"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.110"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.51"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.5"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89949.json"}}],"schema_version":"1.9.0"}