Not yet scoredPublished Dec 24, 2025

CVE-2023-54034iommufd: Make sure to zero vfio_iommu_type1_info before copying to user

Updated under an hour ago (Oct 26, 2026, 8:10 PM ET)

Does this affect you?

It affects Linux. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for Linux

Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: iommufd: Make sure to zero vfio_iommu_type1_info before copying to user Missed a zero initialization here. Most of the struct is filled with a copy_from_user(), however minsz for that copy is smaller than the actual struct by 8 bytes, thus we don't fill the padding.

CVSS: Not yet scored
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Deferred
Record last updated: May 11, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from d624d6652a65ad4f47a58b8651a1ec1163bb81d3 before 7adcec686e4d699c169d34c722132b2bce5232cb; from d624d6652a65ad4f47a58b8651a1ec1163bb81d3 before b3551ead616318ea155558cdbe7e91495b8d9b33	CNA record

References

References

https://git.kernel.org/stable/c/7adcec686e4d699c169d34c722132b2bce5232cb
https://git.kernel.org/stable/c/b3551ead616318ea155558cdbe7e91495b8d9b33

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.