{"id":"CVE-2026-72235","summary":"batman-adv: retrieve ethhdr after potential skb realloc on RX","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nbatman-adv: retrieve ethhdr after potential skb realloc on RX\n\npskb_may_pull() in batadv_interface_rx() could reallocate the buffer behind\nthe skb. Variables which were pointing to the old buffer need to be\nreassigned to avoid an use-after-free.\n\nThis was done correctly for the VLAN header but missed for the ethernet\nheader which is later used for the TT and AP isolation handling.","modified":"2026-08-18T04:17:29.697512393Z","published":"2026-08-15T05:54:25.136Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72235.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/035e1fed892d3d06002a73ff73668f618a514644"},{"type":"WEB","url":"https://git.kernel.org/stable/c/2cefa5141cab8ec1e4b24cf585958b13f2e3049d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6abf73589bed3f27ee240c08108feb72bed0b9c6"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6e189f14d1ea28db212b9d70a02131a7ce518012"},{"type":"WEB","url":"https://git.kernel.org/stable/c/85a71a81854e0e191ad0e533eabb4eff54866feb"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a1820344b180cb55af748f102bc536b5c93164db"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b031fc97e1993d29d6c3a0e86a99140528cf31e8"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f19259395b44af67f3c274e34237c295b526b859"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72235.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-72235"},{"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":"c6c8fea29769d998d94fcec9b9f14d4b52b349d3"},{"fixed":"6e189f14d1ea28db212b9d70a02131a7ce518012"},{"fixed":"a1820344b180cb55af748f102bc536b5c93164db"},{"fixed":"6abf73589bed3f27ee240c08108feb72bed0b9c6"},{"fixed":"f19259395b44af67f3c274e34237c295b526b859"},{"fixed":"2cefa5141cab8ec1e4b24cf585958b13f2e3049d"},{"fixed":"85a71a81854e0e191ad0e533eabb4eff54866feb"},{"fixed":"b031fc97e1993d29d6c3a0e86a99140528cf31e8"},{"fixed":"035e1fed892d3d06002a73ff73668f618a514644"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-72235.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.6.38"},{"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/osv-test-cve-osv-conversion/osv-output/CVE-2026-72235.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}