{"id":"CVE-2026-99286","published":"2026-11-10T19:22:31.930","lastModified":"2026-11-10T21:22:22.900","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nxen-netback: Fix XenBus connection failure cleanup\n\nxenvif_get_stats and xenvif_get_ethtool_stats capture vif->num_queues\nunder rcu_read_lock. We need to unpublish vif->num_queues before\nsynchronize_net to ensure that readers that come afterwards will not\nread a non-zero vif->num_queues and attempt to access invalid queues.\n\nThis is the same cleanup algorithm as used in backend_disconnect and\nadded in commit b17075d5c198 (\"xen-netback: fix race condition on XenBus\ndisconnect\").\n\nThis is XSA-531","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/07aca7d25ce8578fedde49855983a01c537a782b","tags":[]},{"url":"https://git.kernel.org/stable/c/a97aa838903d15f865d80809f5198ff459c6634a","tags":[]},{"url":"https://git.kernel.org/stable/c/ade3082dcdee17c5767069883936d64ff83f6c9f","tags":[]},{"url":"http://www.openwall.com/lists/oss-security/2026/11/10/25","tags":[]},{"url":"http://xenbits.xen.org/xsa/advisory-531.html","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}