CVE-2025-37885
Description
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.
How to fix
- linux linux_kernel5.10.237, 5.15.181, 6.1.136, 6.6.89, 6.12.26, 6.14.5 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 4.4 ≤ v < 5.10.237, 5.11 ≤ v < 5.15.181, 5.16 ≤ v < 6.1.136, 6.2 ≤ v < 6.6.89, 6.7 ≤ v < 6.12.26, 6.13 ≤ v < 6.14.5, 6.15 | 5.10.237, 5.15.181, 6.1.136, 6.6.89, 6.12.26, 6.14.5 |
| debian debian_linux | 11.0 | — |
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