In the Linux kernel, the following vulnerability has been resolved: scsi: target: tcmloop: Fix segfault in tcmlooptpgaddressshow() If the allocation of tlhba->sh fails in tcmloopdriverprobe() and we attempt to dereference it in tcmlooptpgaddressshow() we will get a segfault, see below for an example. So, check tlhba->sh before dereferencing it. Unable to allocate struct scsihost BUG: kernel NULL pointer dereference, address: 0000000000000194 #PF: supervisor read access in kernel mode #PF: errorcode(0x0000) - not-present page PGD 0 P4D 0 Oops: 0000 [#1] PREEMPT SMP NOPTI CPU: 1 PID: 8356 Comm: tokio-runtime-w Not tainted 6.6.104.2-4.azl3 #1 Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS Hyper-V UEFI Release v4.1 09/28/2024 RIP: 0010:tcmlooptpgaddressshow+0x2e/0x50 [tcmloop] ... Call Trace: <TASK> configfsreaditer+0x12d/0x1d0 [configfs] vfsread+0x1b5/0x300 ksys_read+0x6f/0xf0 ...