PT-2025-20537 · Linux+6 · Linux Kernel+6
Published
2025-04-24
·
Updated
2026-05-26
·
CVE-2025-37885
CVSS v3.1
7.8
High
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
A vulnerability in the Linux kernel has been identified, related to KVM (Kernel-based Virtual Machine) on x86 systems. The issue arises when the new GSI route prevents posting the IRQ directly to a vCPU, and the IRTE (Interrupt Remapping Table Entry) is not properly reset to host control. This can lead to interrupts being delivered incorrectly to the guest and potentially result in use-after-free scenarios, especially if the VM is torn down but the underlying host IRQ isn't freed.
Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
DoS
Use After Free
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Weakness Enumeration
Related Identifiers
Affected Products
Astra Linux
Debian
Linuxmint
Linux Kernel
Red Os
Suse
Ubuntu