{"id":"CVE-2026-23001","revision":"d936a23eb55b477d9c3353538112e83b","records":[{"revision":"d936a23eb55b477d9c3353538112e83b","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-23001","aliases":[],"title":"macvlan: fix possible UAF in macvlan_forward_source()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmacvlan: fix possible UAF in macvlan_forward_source()\n\nAdd RCU protection on (struct macvlan_source_entry)->vlan.\n\nWhenever macvlan_hash_del_source() is called, we must clear\nentry->vlan pointer before RCU grace period starts.\n\nThis allows macvlan_forward_source() to skip over\nentries queued for freeing.\n\nNote that macvlan_dev are already RCU protected, as they\nare embedded in a standard netdev (netdev_priv(ndev)).\n\nhttps: //lore.kernel.org/netdev/695fb1e8.050a0220.1c677c.039f.GAE@google.com/T/#u","state":0,"publishedAt":"2026-01-25T14:36:15.79+00:00","modifiedAt":"2026-10-19T18:25:27.213+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/macvlan.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"79cf79abce71eb7dbc40e2f3121048ca5405cb47\",\n                            \"lessThan\": \"8133e85b8a3ec9f10d861e0002ec6037256e987e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"79cf79abce71eb7dbc40e2f3121048ca5405cb47\",\n                            \"lessThan\": \"484919832e2db6ce1e8add92c469e5d459a516b5\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"79cf79abce71eb7dbc40e2f3121048ca5405cb47\",\n                            \"lessThan\": \"232afc74a6dde0fe1830988e5827921f5ec9bb3f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"79cf79abce71eb7dbc40e2f3121048ca5405cb47\",\n                            \"lessThan\": \"15f6faf36e162532bec5cc05eb3fc622108bf2ed\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"79cf79abce71eb7dbc40e2f3121048ca5405cb47\",\n                            \"lessThan\": \"8518712a2ca952d6da2238c6f0a16b4ae5ea3f13\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"79cf79abce71eb7dbc40e2f3121048ca5405cb47\",\n                            \"lessThan\": \"6dbead9c7677186f22b7981dd085a0feec1f038e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"79cf79abce71eb7dbc40e2f3121048ca5405cb47\",\n                            \"lessThan\": \"7470a7a63dc162f07c26dbf960e41ee1e248d80e\",\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/macvlan.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"3.18\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"3.18\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.249\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.199\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.162\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.122\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.67\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.7\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.19\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/8133e85b8a3ec9f10d861e0002ec6037256e987e","https://git.kernel.org/stable/c/484919832e2db6ce1e8add92c469e5d459a516b5","https://git.kernel.org/stable/c/232afc74a6dde0fe1830988e5827921f5ec9bb3f","https://git.kernel.org/stable/c/15f6faf36e162532bec5cc05eb3fc622108bf2ed","https://git.kernel.org/stable/c/8518712a2ca952d6da2238c6f0a16b4ae5ea3f13","https://git.kernel.org/stable/c/6dbead9c7677186f22b7981dd085a0feec1f038e","https://git.kernel.org/stable/c/7470a7a63dc162f07c26dbf960e41ee1e248d80e"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-23001","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-23001","identifiers":["CVE-2026-23001"]},"retained":false,"historicalAffected":[]}],"coverage":[]}