CVE-2026-74515
Description
AI Translation Available
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.
https://git.kernel.org/stable/c/591952b63a9f976da7d49f719f36ec826ee2a575
https://git.kernel.org/stable/c/6837f0ae85fd54cf64c8a0c7c530bba2fae0a207
https://git.kernel.org/stable/c/6be1ff49ba81f96a6fa55915e6d920be43ac57cc
https://git.kernel.org/stable/c/78d9648e7e960546d5b72504a0b0358cd8bb1e9d
https://git.kernel.org/stable/c/8fa01be5a6149404adb82c0979a78f6347edd3ef