Riskcovery

CVE-2023-54174

vfio: Fix NULL pointer dereference caused by uninitialized group->iommufd

State
Published
Severity
Not scored
Published
Dec 30, 2025
Updated
May 11, 2026
Reserved
Dec 30, 2025

Read the record on cve.org

Description

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

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 9eefba8002c27d65ab52a533fd0611b099b73591 to before 8f24eef598ce7cce0bbefe0ec642bcc031d0f528Affected
  • 9eefba8002c27d65ab52a533fd0611b099b73591 to before d649c34cb916b015fdcb487e51409fcc5caeca8dAffected
LinuxLinux
  • 6.2Affected
  • before 6.2Not affected
  • 6.2.3 through 6.2.*Not affected
  • 6.3 and laterNot affected

References

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