{"id":"CVE-2026-80681","revision":"a5161c9e2798400bb8c3bac359c69442","records":[{"revision":"a5161c9e2798400bb8c3bac359c69442","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-80681","aliases":[],"title":"vxlan: re-fetch eth header after route_shortcircuit()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nvxlan: re-fetch eth header after route_shortcircuit()\n\nBefore route_shortcircuit(), the eth header pointer is cached from eth_hdr(skb).\n\nInside route_shortcircuit(), pskb_may_pull() can be called, which may\nreallocate skb->head.\n\nIn this case, returning to vxlan_xmit() leaves the cached eth pointer pointing to\nfreed memory, leading to a use-after-free when dereferencing eth->h_dest.\n\nFix this by updating eth = eth_hdr(skb) after calling route_shortcircuit().","state":0,"publishedAt":"2026-08-28T06:52:48.896+00:00","modifiedAt":"2026-10-16T19:26:32.921+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/net/vxlan/vxlan_core.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"ae8840825605f36f98f247323edc150e761cb64e\",\n                            \"lessThan\": \"6375093eb45cd7d89f1945f939eeae3b29d79f56\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ae8840825605f36f98f247323edc150e761cb64e\",\n                            \"lessThan\": \"1b7f7b653e3557690047c62f03b80a24ea5a58a5\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ae8840825605f36f98f247323edc150e761cb64e\",\n                            \"lessThan\": \"bf045341dfb3e767f0ff94cf240ce3c371973bd4\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ae8840825605f36f98f247323edc150e761cb64e\",\n                            \"lessThan\": \"2355c8c26d2aa1b4385b369e67202e47d460d555\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ae8840825605f36f98f247323edc150e761cb64e\",\n                            \"lessThan\": \"1511631b7cfc4152b10a0a9d04c7a0bf2ddf4585\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ae8840825605f36f98f247323edc150e761cb64e\",\n                            \"lessThan\": \"1235e017aa11cf01e91b613c4c5ed6aa28934fff\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ae8840825605f36f98f247323edc150e761cb64e\",\n                            \"lessThan\": \"c9dceac9e1c7c772c43c732fc0d325e72835801a\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ae8840825605f36f98f247323edc150e761cb64e\",\n                            \"lessThan\": \"1395a676ec15a0a02a2a6d86602324f2d5fd41d5\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/net/vxlan/vxlan_core.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"3.10\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"3.10\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.265\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.216\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.183\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.151\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.103\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.44\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1.8\",\n                            \"lessThanOrEqual\": \"7.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8,"severity":"CRITICAL"}],"references":["https://git.kernel.org/stable/c/6375093eb45cd7d89f1945f939eeae3b29d79f56","https://git.kernel.org/stable/c/1b7f7b653e3557690047c62f03b80a24ea5a58a5","https://git.kernel.org/stable/c/bf045341dfb3e767f0ff94cf240ce3c371973bd4","https://git.kernel.org/stable/c/2355c8c26d2aa1b4385b369e67202e47d460d555","https://git.kernel.org/stable/c/1511631b7cfc4152b10a0a9d04c7a0bf2ddf4585","https://git.kernel.org/stable/c/1235e017aa11cf01e91b613c4c5ed6aa28934fff","https://git.kernel.org/stable/c/c9dceac9e1c7c772c43c732fc0d325e72835801a","https://git.kernel.org/stable/c/1395a676ec15a0a02a2a6d86602324f2d5fd41d5"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-80681","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-80681","identifiers":["CVE-2026-80681"]},"retained":false,"historicalAffected":[]}],"coverage":[]}