{"id":"CVE-2026-23001","summary":"macvlan: fix possible UAF in macvlan_forward_source()","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","aliases":["ECHO-0e90-c4e3-9192"],"modified":"2026-04-21T02:27:29.211350398Z","published":"2026-01-25T14:36:15.790Z","related":["ALSA-2026:3963","ALSA-2026:3964","ALSA-2026:3966","ALSA-2026:4012","SUSE-SU-2026:0447-1","SUSE-SU-2026:0471-1","SUSE-SU-2026:0472-1","SUSE-SU-2026:0473-1","SUSE-SU-2026:0474-1","SUSE-SU-2026:0475-1","SUSE-SU-2026:0495-1","SUSE-SU-2026:0496-1","SUSE-SU-2026:0587-1","SUSE-SU-2026:0617-1","SUSE-SU-2026:1131-1","SUSE-SU-2026:20477-1","SUSE-SU-2026:20498-1","SUSE-SU-2026:20555-1","SUSE-SU-2026:20599-1","SUSE-SU-2026:20615-1","SUSE-SU-2026:20845-1","SUSE-SU-2026:20876-1","openSUSE-SU-2026:20287-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23001.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/15f6faf36e162532bec5cc05eb3fc622108bf2ed"},{"type":"WEB","url":"https://git.kernel.org/stable/c/232afc74a6dde0fe1830988e5827921f5ec9bb3f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/484919832e2db6ce1e8add92c469e5d459a516b5"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6dbead9c7677186f22b7981dd085a0feec1f038e"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7470a7a63dc162f07c26dbf960e41ee1e248d80e"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8133e85b8a3ec9f10d861e0002ec6037256e987e"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8518712a2ca952d6da2238c6f0a16b4ae5ea3f13"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23001.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-23001"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"79cf79abce71eb7dbc40e2f3121048ca5405cb47"},{"fixed":"8133e85b8a3ec9f10d861e0002ec6037256e987e"},{"fixed":"484919832e2db6ce1e8add92c469e5d459a516b5"},{"fixed":"232afc74a6dde0fe1830988e5827921f5ec9bb3f"},{"fixed":"15f6faf36e162532bec5cc05eb3fc622108bf2ed"},{"fixed":"8518712a2ca952d6da2238c6f0a16b4ae5ea3f13"},{"fixed":"6dbead9c7677186f22b7981dd085a0feec1f038e"},{"fixed":"7470a7a63dc162f07c26dbf960e41ee1e248d80e"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-23001.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.18.0"},{"fixed":"5.10.249"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.199"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.162"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.122"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.67"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.7"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-23001.json"}}],"schema_version":"1.7.5"}