{"id":"AZL-66905","summary":"CVE-2025-38700 affecting package kernel for versions less than 6.6.104.2-1","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: libiscsi: Initialize iscsi_conn-\u003edd_data only if memory is allocated\n\nIn case of an ib_fast_reg_mr allocation failure during iSER setup, the\nmachine hits a panic because iscsi_conn-\u003edd_data is initialized\nunconditionally, even when no memory is allocated (dd_size == 0).  This\nleads invalid pointer dereference during connection teardown.\n\nFix by setting iscsi_conn-\u003edd_data only if memory is actually allocated.\n\nPanic trace:\n------------\n iser: iser_create_fastreg_desc: Failed to allocate ib_fast_reg_mr err=-12\n iser: iser_alloc_rx_descriptors: failed allocating rx descriptors / data buffers\n BUG: unable to handle page fault for address: fffffffffffffff8\n RIP: 0010:swake_up_locked.part.5+0xa/0x40\n Call Trace:\n  complete+0x31/0x40\n  iscsi_iser_conn_stop+0x88/0xb0 [ib_iser]\n  iscsi_stop_conn+0x66/0xc0 [scsi_transport_iscsi]\n  iscsi_if_stop_conn+0x14a/0x150 [scsi_transport_iscsi]\n  iscsi_if_rx+0x1135/0x1834 [scsi_transport_iscsi]\n  ? netlink_lookup+0x12f/0x1b0\n  ? netlink_deliver_tap+0x2c/0x200\n  netlink_unicast+0x1ab/0x280\n  netlink_sendmsg+0x257/0x4f0\n  ? _copy_from_user+0x29/0x60\n  sock_sendmsg+0x5f/0x70","modified":"2026-04-01T05:21:47.906869Z","published":"2025-09-04T16:15:38Z","upstream":["CVE-2025-38700"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-38700"}],"affected":[{"package":{"name":"kernel","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/kernel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.6.104.2-1"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-66905.json"}}],"schema_version":"1.7.5"}