CVE-2023-54174
N/A
Summary
In the Linux kernel, the following vulnerability has been resolved:
vfio: Fix NULL pointer dereference caused by uninitialized group->iommufd
group->iommufd is not initialized for the iommufd_ctx_put()
[20018.331541] BUG: kernel NULL pointer dereference, address: 0000000000000000 [20018.377508] RIP: 0010:iommufd_ctx_put+0x5/0x10 [iommufd] … [20018.476483] Call Trace: [20018.479214] <TASK> [20018.481555] vfio_group_fops_unl_ioctl+0x506/0x690 [vfio] [20018.487586] __x64_sys_ioctl+0x6a/0xb0 [20018.491773] ? trace_hardirqs_on+0xc5/0xe0 [20018.496347] do_syscall_64+0x67/0x90 [20018.500340] entry_SYSCALL_64_after_hwframe+0x4b/0xb5
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 9eefba8002c27d65ab52a533fd0611b099b73591 < 8f24eef598ce7cce0bbefe0ec642bcc031d0f528 | affected |
| Linux | Linux | 9eefba8002c27d65ab52a533fd0611b099b73591 < d649c34cb916b015fdcb487e51409fcc5caeca8d | affected |
| Linux | Linux | 6.2 | affected |
| Linux | Linux | 0 < 6.2 | unaffected |
| Linux | Linux | 6.2.3 <= 6.2.* | unaffected |
| Linux | Linux | 6.3 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/8f24eef598ce7cce0bbefe0ec642bcc031d0f528
- https://git.kernel.org/stable/c/d649c34cb916b015fdcb487e51409fcc5caeca8d
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