Wind River Support Network

Description

In the Linux kernel, the following vulnerability has been resolved:EOL][EOL]scsi: libiscsi: Initialize iscsi_conn->dd_data only if memory is allocated[EOL][EOL]In case of an ib_fast_reg_mr allocation failure during iSER setup, the[EOL]machine hits a panic because iscsi_conn->dd_data is initialized[EOL]unconditionally, even when no memory is allocated (dd_size == 0).  This[EOL]leads invalid pointer dereference during connection teardown.[EOL][EOL]Fix by setting iscsi_conn->dd_data only if memory is actually allocated.[EOL][EOL]Panic trace:[EOL]------------[EOL] iser: iser_create_fastreg_desc: Failed to allocate ib_fast_reg_mr err=-12[EOL] iser: iser_alloc_rx_descriptors: failed allocating rx descriptors / data buffers[EOL] BUG: unable to handle page fault for address: fffffffffffffff8[EOL] RIP: 0010:swake_up_locked.part.5+0xa/0x40[EOL] Call Trace:[EOL]  complete+0x31/0x40[EOL]  iscsi_iser_conn_stop+0x88/0xb0 [ib_iser][EOL]  iscsi_stop_conn+0x66/0xc0 [scsi_transport_iscsi][EOL]  iscsi_if_stop_conn+0x14a/0x150 [scsi_transport_iscsi][EOL]  iscsi_if_rx+0x1135/0x1834 [scsi_transport_iscsi][EOL]  ? netlink_lookup+0x12f/0x1b0[EOL]  ? netlink_deliver_tap+0x2c/0x200[EOL]  netlink_unicast+0x1ab/0x280[EOL]  netlink_sendmsg+0x257/0x4f0[EOL]  ? _copy_from_user+0x29/0x60[EOL]  sock_sendmsg+0x5f/0x70

CREATE(Triage):(User=admin) [CVE-2025-38700 (https://nvd.nist.gov/vuln/detail/CVE-2025-38700)