Detections
Analytics
CVE-2026-74515
medium
Description
In the Linux kernel, the following vulnerability has been resolved: KVM: s390: pci: Reject adapter interrupt forwarding if already enabled The MPCIFC instruction doesn't allow registering adapter interrupts without first unregistering. So reject any request to enable interrupt forwarding if its already enabled for the zPCI device. This also fixes overwriting and thus leaking resources when the ioctl is called multiple times for the same device.
References
https://git.kernel.org/stable/c/8fa01be5a6149404adb82c0979a78f6347edd3ef
https://git.kernel.org/stable/c/78d9648e7e960546d5b72504a0b0358cd8bb1e9d
https://git.kernel.org/stable/c/6be1ff49ba81f96a6fa55915e6d920be43ac57cc
https://git.kernel.org/stable/c/6837f0ae85fd54cf64c8a0c7c530bba2fae0a207
https://git.kernel.org/stable/c/591952b63a9f976da7d49f719f36ec826ee2a575