{"api_version":"1","generated_at":"2026-07-23T14:58:35+00:00","cve":"CVE-2026-23001","urls":{"html":"https://cve.report/CVE-2026-23001","api":"https://cve.report/api/cve/CVE-2026-23001.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-23001","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-23001"},"summary":{"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":"PUBLISHED","assigner":"Linux","published_at":"2026-01-25 15:15:54","updated_at":"2026-04-27 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fix possible UAF in macvlan_forward_source()","CVE":"CVE-2026-23001","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"23001","Ordinal":"1","NoteData":"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","Type":"Description","Title":"macvlan: fix possible UAF in macvlan_forward_source()"}]}}}