SB2026081669 - Improper Initialization in Linux kernel vdpa vdpa_user driver
Published: August 16, 2026
Security Bulletin ID
SB2026081669
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper Initialization (CVE-ID: CVE-2026-72305)
CWE-ID: CWE-665 - Improper Initialization
CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a local user to disclose sensitive information.
The vulnerability exists due to improper initialization in VDUSE bounce page allocation when mapping bounce pages to userspace. A local user can trigger bounce page mappings to disclose sensitive information.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/00335df9da2011e095f846d645cc2e9fd2907659
- https://git.kernel.org/stable/c/5e88c1bc3a41d9a260dd42bae8ad18fd4f35bbe1
- https://git.kernel.org/stable/c/690fb82c4122f8c2656fa4f842275132771b68b9
- https://git.kernel.org/stable/c/9c1523803445ee0348f62b77793266dd981596e0
- https://git.kernel.org/stable/c/fde25641cbddd0c084e3320d08f755e7e6acfae5