NetSight
IP …
high8.8

CVE-2025-37885

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Reset IRTE to host control if *new* route isn't postable Restore an IRTE back to …

Impact

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Reset IRTE to host control if *new* route isn't postable Restore an IRTE back to host control (remapped or posted MSI mode) if the *new* GSI route prevents posting the IRQ directly to a vCPU, regardless of the GSI routing type. Updating the IRTE if and only if the new GSI is an MSI results in KVM leaving an IRTE posting to a vCPU. The dangling IRTE can result in interrupts being incorrectly delivered to the guest, and in the worst case scenario can result in use-after-free, e.g. if the VM is torn down, but the underlying host IRQ isn't freed.

Affected products

VendorProductAffected versions
LinuxLinux Kernel
from 4.4 before 5.10.237
from 5.11 before 5.15.181
from 5.16 before 6.1.136
from 6.2 before 6.6.89
from 6.7 before 6.12.26
from 6.13 before 6.14.5
DebianDebian Linux
Version 11.0

Weakness classification

CWE-416

References