{"id":"CVE-2026-80600","summary":"batman-adv: dat: acquire ARP hw source only after skb realloc","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nbatman-adv: dat: acquire ARP hw source only after skb realloc\n\nThe pskb_may_pull() called by batadv_get_vid() could reallocate the buffer\nbehind the skb. Variables which were pointing to the old buffer need to be\nreassigned to avoid an use-after-free.","modified":"2026-08-30T03:48:20.869619649Z","published":"2026-08-28T06:48:27.351Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80600.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/01678c53a7717a748aee388b6839e7b9761d641c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/059a70e1d12d6d99310e0599d37b0323557569a8"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3404be97b940a9b1ae1aea5fdbc6cdbbe9cd5146"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3b4c70c40f2e135a50cd38fc61c7d23a296a9981"},{"type":"WEB","url":"https://git.kernel.org/stable/c/48067b2ae4504500a7093d9e1e16b42e70330480"},{"type":"WEB","url":"https://git.kernel.org/stable/c/86aa79b43e5b561fd3648891165bd7313b541315"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a82fc217cb7a447313c76ebf9f09b100771b0ddf"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d755cd001fa2c248e186c1fc3df3d11d97dc843c"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80600.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80600"},{"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":"b61ec31c85756bbc898fb892555509afe709459a"},{"fixed":"a82fc217cb7a447313c76ebf9f09b100771b0ddf"},{"fixed":"86aa79b43e5b561fd3648891165bd7313b541315"},{"fixed":"d755cd001fa2c248e186c1fc3df3d11d97dc843c"},{"fixed":"3404be97b940a9b1ae1aea5fdbc6cdbbe9cd5146"},{"fixed":"01678c53a7717a748aee388b6839e7b9761d641c"},{"fixed":"3b4c70c40f2e135a50cd38fc61c7d23a296a9981"},{"fixed":"059a70e1d12d6d99310e0599d37b0323557569a8"},{"fixed":"48067b2ae4504500a7093d9e1e16b42e70330480"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80600.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.1.0"},{"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-2026-80600.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"}]}