CVE-2025-68229

In the Linux kernel, the following vulnerability has been resolved:

scsi: target: tcm_loop: Fix segfault in tcm_loop_tpg_address_show()

If the allocation of tl_hba->sh fails in tcm_loop_driver_probe() and we

attempt to dereference it in tcm_loop_tpg_address_show() we will get a

segfault, see below for an example. So, check tl_hba->sh before

dereferencing it.

Unable to allocate struct scsi_host

BUG: kernel NULL pointer dereference, address: 0000000000000194

#PF: supervisor read access in kernel mode

#PF: error_code(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:tcm_loop_tpg_address_show+0x2e/0x50 [tcm_loop]

...

Call Trace:

<TASK>

configfs_read_iter+0x12d/0x1d0 [configfs]

vfs_read+0x1b5/0x300

ksys_read+0x6f/0xf0

...