{"id":"AZL-113317","summary":"CVE-2026-99287 affecting package kernel 6.6.161.1-1","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nxen-netback: Zero out sring pointers on unmap\n\nIf xenvif_map_frontend_data_rings() fails when a ring is already mapped,\nit unmaps them via xenvif_unmap_frontend_data_rings() which keeps the\nring pointers unchanged. xenvif_connect_data()'s cleanup path calls\nxenvif_disconnect_queue() which in turn calls\nxenvif_unmap_frontend_data_rings() again, which will attempt to unmap the\npointers a second time.\n\nZero out the ring pointers after they are unmapped to avoid this issue.\n\nThis is XSA-532","modified":"2026-11-11T14:17:33.244657480Z","published":"2026-11-10T19:22:32Z","upstream":["CVE-2026-99287"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-99287"}],"affected":[{"package":{"name":"kernel","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/kernel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"6.6.161.1-1"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-113317.json"}}],"schema_version":"1.9.2"}