{"id":"CVE-2026-74474","summary":"vxlan: use pskb_network_may_pull() for transmit path header pulls","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nvxlan: use pskb_network_may_pull() for transmit path header pulls\n\nIn vxlan_xmit(), arp_reduce(), and vxlan_mdb_entry_skb_get(), pskb_may_pull() was\nbeing called to verify the availability of network layer headers (ARP, IPv6/ND,\nIP/IPv6 MDB keys).\n\nHowever, during transmit skb-\u003edata points to the MAC header, so skb_network_offset(skb)\nis ETH_HLEN (14 bytes). Using pskb_may_pull(skb, len) only checks len bytes from skb-\u003edata\nrather than skb_network_offset(skb) + len, which can leave part of the network header\nin non-linear frags.\n\nReplace these remaining pskb_may_pull() calls with pskb_network_may_pull() to properly\naccount for the MAC header offset.","modified":"2026-08-25T03:51:31.949943802Z","published":"2026-08-15T12:27:10.037Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74474.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/6146901881f09ef063eb34ad389f63231f8486f5"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7076a34b6e33315dc160b4612bfea1c597495585"},{"type":"WEB","url":"https://git.kernel.org/stable/c/94dee751aad627b3645d424b5d0c736d394573e9"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b9553558b48db54ac9273e6b98d7263ef5c1a329"},{"type":"WEB","url":"https://git.kernel.org/stable/c/bb01c51950c3ff3c76acdd54b85ab38ccc2a8bb4"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74474.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74474"},{"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":"e4f67addf158f98f8197e08974966b18480dc751"},{"fixed":"bb01c51950c3ff3c76acdd54b85ab38ccc2a8bb4"},{"fixed":"6146901881f09ef063eb34ad389f63231f8486f5"},{"fixed":"94dee751aad627b3645d424b5d0c736d394573e9"},{"fixed":"7076a34b6e33315dc160b4612bfea1c597495585"},{"fixed":"b9553558b48db54ac9273e6b98d7263ef5c1a329"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74474.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.8.0"},{"fixed":"6.6.153"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.105"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.44"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.8"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74474.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"}]}