CVE-2026-98156 Linux Kernel - Broken Access Control

Linux kernel contains a broken access control vulnerability in virtio-gpu on Xen PV domains caused by improper use of DMA API for resource backing, letting attackers cause host to scan unrelated memory, exploit requires running in a Xen PV domain.

CVSS base score 7.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.13% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Broken Access Control
Impact
Information Disclosure, Denial Of Service
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Published
25 September 2026
Updated
15 October 2026
Weakness
NVD-CWE-noinfo

Vendor fix

Update to a Linux kernel version including the fix for virtio-gpu DMA API usage on Xen PV domains, such as 6.8 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

← All CVEs