{"id":"AZL-77169","summary":"CVE-2026-23001 affecting package kernel for versions less than 6.6.126.1-1","details":"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)-\u003evlan.\n\nWhenever macvlan_hash_del_source() is called, we must clear\nentry-\u003evlan 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","modified":"2026-08-28T17:47:51.309405369Z","published":"2026-01-25T15:15:54Z","upstream":["CVE-2026-23001"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-23001"}],"affected":[{"package":{"name":"kernel","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/kernel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.6.126.1-1"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-77169.json"}}],"schema_version":"1.9.0"}