{"id":"CVE-2026-74474","title":"vxlan: use pskb_network_may_pull() for transmit path header pulls","summary":"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 ver…","severity":"critical","cvss":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cvssSource":"cna","vendor":"Linux","product":"Linux","affected":["Linux >= e4f67addf158f98f8197e08974966b18480dc751 < 371425d4be7795e9158388af9eee0201e6047410","Linux >= e4f67addf158f98f8197e08974966b18480dc751 < bb01c51950c3ff3c76acdd54b85ab38ccc2a8bb4","Linux >= e4f67addf158f98f8197e08974966b18480dc751 < 6146901881f09ef063eb34ad389f63231f8486f5","Linux >= e4f67addf158f98f8197e08974966b18480dc751 < 94dee751aad627b3645d424b5d0c736d394573e9","Linux >= e4f67addf158f98f8197e08974966b18480dc751 < 7076a34b6e33315dc160b4612bfea1c597495585","Linux >= e4f67addf158f98f8197e08974966b18480dc751 < b9553558b48db54ac9273e6b98d7263ef5c1a329","Linux 3.8"],"published":"2026-08-15","updated":"2026-09-14","sourceUpdated":"2026-09-14T11:58:47.210Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-74474","references":[{"url":"https://git.kernel.org/stable/c/371425d4be7795e9158388af9eee0201e6047410"},{"url":"https://git.kernel.org/stable/c/bb01c51950c3ff3c76acdd54b85ab38ccc2a8bb4"},{"url":"https://git.kernel.org/stable/c/6146901881f09ef063eb34ad389f63231f8486f5"},{"url":"https://git.kernel.org/stable/c/94dee751aad627b3645d424b5d0c736d394573e9"},{"url":"https://git.kernel.org/stable/c/7076a34b6e33315dc160b4612bfea1c597495585"},{"url":"https://git.kernel.org/stable/c/b9553558b48db54ac9273e6b98d7263ef5c1a329"}],"tags":["cve.org"],"epss":0.00491,"epssPercentile":0.41292,"ingestedAt":"2026-09-14T15:23:07.456Z","slug":"CVE-2026-74474","body":"## Overview\n\nIn 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->data 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->data\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.\n\n## Affected\n\n- `Linux >= e4f67addf158f98f8197e08974966b18480dc751 < 371425d4be7795e9158388af9eee0201e6047410`\n- `Linux >= e4f67addf158f98f8197e08974966b18480dc751 < bb01c51950c3ff3c76acdd54b85ab38ccc2a8bb4`\n- `Linux >= e4f67addf158f98f8197e08974966b18480dc751 < 6146901881f09ef063eb34ad389f63231f8486f5`\n- `Linux >= e4f67addf158f98f8197e08974966b18480dc751 < 94dee751aad627b3645d424b5d0c736d394573e9`\n- `Linux >= e4f67addf158f98f8197e08974966b18480dc751 < 7076a34b6e33315dc160b4612bfea1c597495585`\n- `Linux >= e4f67addf158f98f8197e08974966b18480dc751 < b9553558b48db54ac9273e6b98d7263ef5c1a329`\n- `Linux 3.8`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":54,"depthScoreParts":{"impact":53.9,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}