CVE-2023-54174

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> vfio: Fix NULL pointer dereference caused by uninitialized group-&gt;iommufd<br /> <br /> group-&gt;iommufd is not initialized for the iommufd_ctx_put()<br /> <br /> [20018.331541] BUG: kernel NULL pointer dereference, address: 0000000000000000<br /> [20018.377508] RIP: 0010:iommufd_ctx_put+0x5/0x10 [iommufd]<br /> ...<br /> [20018.476483] Call Trace:<br /> [20018.479214] <br /> [20018.481555] vfio_group_fops_unl_ioctl+0x506/0x690 [vfio]<br /> [20018.487586] __x64_sys_ioctl+0x6a/0xb0<br /> [20018.491773] ? trace_hardirqs_on+0xc5/0xe0<br /> [20018.496347] do_syscall_64+0x67/0x90<br /> [20018.500340] entry_SYSCALL_64_after_hwframe+0x4b/0xb5