CVE-2023-54137
kernel: Linux kernel: Information disclosure in VFIO Type1 module via uninitialized stack memory
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · December 24, 2025
Updated · March 6, 2026
Description
A flaw was found in the Linux kernel's Virtual Function I/O (VFIO) Type1 module. This vulnerability allows a local user to expose uninitialized kernel stack memory to userspace, leading to information disclosure. The flaw occurs because a specific data structure, vfio_iommu_type1_info_cap_migration, contains an uninitialized memory region that is copied to userspace.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CWE-908 · Use of Uninitialized Resource