CVE-2025-37885High· 8.8▾ TwilightIn 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 p…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 48.4 · likelihood 0.1 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Oct 15.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Last analysed / modified upstream
0.3%
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.
linux_kernel >= 4.4, < 5.10.237linux_kernel >= 5.11, < 5.15.181linux_kernel >= 5.16, < 6.1.136linux_kernel >= 6.2, < 6.6.89linux_kernel >= 6.7, < 6.12.26linux_kernel >= 6.13, < 6.14.5linux_kernel = 6.15debian_linux = 11.0Upgrade past the affected range:
linux_kernel 6.14.5Connected by shared product, vendor, weakness, or advisory.
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