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Vulnerability · Published Dec 30, 2025 · Assigned by Linux

CVE-2023-54174vfio: Fix NULL pointer dereference caused by uninitialized group->iommufd

Unrated

In plain English

A security flaw in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 8% of all known vulnerabilities).

Severity (CVSS )–Not rated
Exploit odds (30 days)0.2%top 91.9% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official 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

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2023-54174
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2023-54174
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2023-54174
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2023-54174
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2023-54174
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2023-54174
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2023-54174
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2023-54174
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2023-54174
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2023-54174
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2023-54174
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2023-54174
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2023-54174
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2023-54174
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2023-54174
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2023-54174
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2023-54174
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2023-54174
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2023-54174
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2023-54174
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2023-54174
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2023-54174
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2023-54174
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2023-54174
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2023-54174
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2023-54174
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2023-54174
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2023-54174
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2023-54174
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2023-54174
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2023-54174
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2023-54174
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2023-54174
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2023-54174
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2023-54174
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2023-54174
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2023-54174
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2023-54174
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2023-54174
Ubuntu:24.04:LTSlinux-riscv-6.14no fix listedUBUNTU-CVE-2023-54174
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2023-54174
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2023-54174
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2023-54174
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2023-54174

Affected products (as reported)

VendorProductVersions
Linux Linux 9eefba8002c27d65ab52a533fd0611b099b73591 – before 8f24eef598ce7cce0bbefe0ec642bcc031d0f5289eefba8002c27d65ab52a533fd0611b099b73591 – before d649c34cb916b015fdcb487e51409fcc5caeca8d
Linux Linux 6.2

References